HOW TO: JUNKYARD M90 BLOWER ON A 5.3L Z71 SILVERADO-WHAT WENT WRONG? WHY DOESN'T IT MAKE POWER?

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Күн бұрын

CAN YOU RUN A CHEAP, JUNKYARD DIY M90 BLOWER ON YOUR TRUCK? HOW MUCH POWER DOES A SUPERCHARGER ADD? WHY DOESN'T MY MOTOR MAKE ANY POWER? HOW TO INSTALL A DIY SUPERCHARGER KIT. 2002 SILVERADO BLOWER INSTALL. HOW MUCH TORQUE WILL A BLOWER ADD TO MY TRUCK? CAN I RUN A JUNKYARD BLOWER? CHECK OUT THIS VIDEO AND HELP ME FIGURE OUT WHAT WENT WRONG WHEN I TRIED TO RUN THE M90 BLOWER ON MY 2002 SILVERADO. USING THE SUPER RICHIE ADAPTER PLATE, I WAS ABLE TO INSTALL THE JUNKYARD M90 FROM A 3800 V6 ON THE 5.3L V8! WHAT WENT WRONG?

Пікірлер: 398

@keithbarron3654 6 ай бұрын

V mounted Knock sensors could be picking up blower rotors, pulling ignition.

@harrison2281 5 ай бұрын

Put the hood in service position! That hood can be opened to a full 90° by simple moving 2 bolts. Wouldn't have had to be hunched over so far during intake and blower install. GMT800 Easter egg is hood service position

@DangaRanga 6 ай бұрын

Honestly, I've seen enough of those coils die, that swapping the coil from a good cylinder to #7 to see if the problem follows the coil would have been high on my list after verifying everything was reconnected properly and in the correct locations. I believe those early year trucks get pissy if theres a poor ground to the coil pack via the mounting bolt. maybe due to age and fussing around in the engine bay, you disturbed the little connection it had. Could stick a power probe to it while loaded to provide direct ground and see if it improves. Sometimes its easy to look past the simple stuff

@lafinrat 6 ай бұрын

None of the Gen 3/4 coils ground through the mounting bolts. The coil brackets and valve covers are insulated from ground.....

@pmotorsports8276 6 ай бұрын

Every coil that I found bad = we're physically broken or aftermarket.

@adamadriano9957 6 ай бұрын

I don’t know how you don’t have more subscribers!! Content is too good!

@sigvision4189 6 ай бұрын

Don't realize how heavy a supercharger is until you have to lift out over the engine to put it in its home.

@lifeishard1211 6 ай бұрын

the gen 5 I just bought weighed like 30 lbs.

@sigvision4189 6 ай бұрын

@lifeishard1211 Yep, I have a gen 3 and 5. Not bad until you are bent over front and trying to set them in place. Not bad if you can get in engine bay but mine I couldn't

@bcbloc02 6 ай бұрын

Maybe your catalytic converter is stopped up and it just won’t flow anymore so the added boost is killed by extra exhaust back pressure and the power to turn the blower?

@Turbogto_guy 6 ай бұрын

I admire the amount of work you went through to make this video happen.

@2wheelzdown180 6 ай бұрын

Run a scanner on it and see how many counts of misfire you’re getting. Had a 6.0 with small crack in exhaust manifold that was barely noticeable unless u were almost against manifold listening . No cel ,good o2 reading, . Kept throwing misfires on 7 and slight across the board on that bank . Welded it up and it cleared out them all . Just a thought

@jeremymardlin5381 6 ай бұрын

It wouldn't be the first time I've seen a coil spark a plug outside of the cylinder and not wotk under cylinder pressure.

@bobroberts2371 6 ай бұрын

Champion made a plug cleaning / testing machine back in the 1960's or earlier. There was a spot to screw the plug into then you applied air pressure to see if the plug still sparked when you looked through the little glass window.

@hydrocarbon8272 6 ай бұрын

The 'heatsink' d585 coils have lately become a common problem. I had one turbo truck where 2 weren't firing, and another that literally blew the bottom out as we were warming the truck up prior to tuning. A friend also had them on a 6.2 that blew up, we suspect from 2 firing early due to overheating (self-protection). You'll still get spark, but being so early it either knocks or kills power like it's a dead cylinder.

@hardhead7056 6 ай бұрын

Dont give up. Power through. Definitely following.

@MrJustinWheeler 6 ай бұрын

Can’t wait to see what you figure out. Good luck!

@onelostsoul1997 6 ай бұрын

Rich, are we ever going to see the m90 on a 4.3 V6 Vortec? Rich, there is an Astro van or a express van with a 4.3 in it with your name on it at your favorite U pull it.

@kriskoch1462 3 ай бұрын

Richard, Bud, DONT GIVE UP ON THIS!!! I CANNOT WAIT TO SEE this work I have the same truck with a 5.3l59 with AFR heads, truck Norris, Fast intake, 90mm tb, headers, 36lb injr, 4.11 front/rear it screams! Lol

@chrishansen7004 6 ай бұрын

spark plugs and coils? this is quite the pickle you got yourself into richard! cant wait too see the rest of this project!

@AnDrEw122100 5 күн бұрын

We need a super Richie dual junkyard m90 supercharger adapter plate 🤣

@scotttimpany2845 6 ай бұрын

Whoa! I thought for sure you were NOT going to stick the landing @ 5:38.

@va_innovations 6 ай бұрын

Keep us updated!

@jtdyalEngineer 6 ай бұрын

I can't wait to find out what the source of the problem is... You listed everything I would have possibly checked.

@bens8696 6 ай бұрын

Rewatched and saw you addressed most of that stuff I guess the only thing might be a worn seat lifter holding the valve open a bit when pumped up but not at low rpm?

@theone861 5 ай бұрын

I had a "The Other Guys" idea. How about a comparison between a Chevy 265 vs. Pontiac 265. I believe they have the same bore & stroke but I wonder how they'd respond to similar upgrades. I know it's a long shot since they're both ancient engines. Keep up the good work.

@Tyler-fi4ms 6 ай бұрын

Richard i love your videos! Have you ever thought about doing a dyno comparison on different turbo compressor housing designs?

@shane-222 6 ай бұрын

Nimble like a ninja!! 🥷

@josephschaefer9163 5 ай бұрын

Check your spark arc length. I've had coils fail that still sparked. Car made about 50 hp til I changed coil packs

@countryboy514 6 ай бұрын

Love the Super Richie branding

@footbraker7070 6 ай бұрын

Can’t tell you how many times I have seen them seem to run fine NA, and act up under boost. My latest project was nosing over at 6800, and I tried three different sets of coils before getting good ones.

@jeremiahs4992 6 ай бұрын

Sounded good, and considering you checked just about everything, I wondering if if the Transmission is on the way out the door,

@calivette805 6 ай бұрын

Good content . Waiting to see what the culprit was

@senditsquad69 5 ай бұрын

I'm actually putting a m122 on my 5.3 cause of this guy. We need a follow up video!

@richardholdener1727 5 ай бұрын

agreed

@henrycaines9599 4 ай бұрын

@richardholdener1727 hey Richard first let me.say I love your channel... I have learned so much ... now for my real question can you please tell me what head gaskets I should run on my all stock lm7 Gen 3 5.3 I'm putting twin turbos on it I'm honestly not gonna run more 8 to 10 pounds of boost its just a Lil weekend truck not racing it at all more of just a truck meet thing it has 862 heads with a mild cam and push rods

@kingdiesel68 6 ай бұрын

Hey my brother love your videos! We're you able to test pressure in each cylinder? I had seen in the video that the opening is towards the front. I was wondering if the back cylinders were getting as much air? The censors tell the tail! Most people don't have access to a dyno so man do we appreciate what you do!

@christopherc3017 6 ай бұрын

Maybe the added pressure is squeezing things to much for plug to ignite past spark. I had a high compression sbc that would kill spark plugs if it didn’t have enough power for the spark.

@wht240sxka 6 ай бұрын

Maybe blowing out the spark, close the gap and run hotter plugs. 3 bar map install. I haven’t followed the full build, but these things plagued me when I’ve built similar projects.

@PatKempen 6 ай бұрын

Looking forward to see what the problem is. Could it be the timing chain?

@bntrouble31 4 ай бұрын

Coil, collapsing lifter or weak valve spring. One of the 3 for sure..

@craigdowney6438 5 ай бұрын

On my 02 Saturn, I started getting a "cam sensor" code (the engine doesn't have a cam sensor). I found that the back of the coil pack was corroded and losing ground. I removed it and took some sandpaper to it, and the mating surface on the block. this fixed it for 6 months then it came back and kept returning about every 6 months.

@AndyFromm 6 ай бұрын

Sweet bronco!

@mikeclark740 6 ай бұрын

The motors wore out rebuilt time with a good cam and valve springs 🎉

@alexray55 5 ай бұрын

So I was thinking about something and not sure if you've done it or not. But what about a test between holley, edelbrock, maybe carter, and Motorcraft carbs to see what actually makes the most power. Everyone has their own brand they like just like ford, chevy, and dodge people. So instead of comparing engines run all the carbs on one engine no matter what brand engine you choose. Carb ls, sbc BBC, sbf, bbf, small block chrysler, big block chrysler, etc. Think it would be a fun comparison that wouldn't take a lot of work

@MADDMERK 6 ай бұрын

Maybe a MAF disable and a VE tune only would be the way to go. were you maxing out the maf scale with the extra flow? Bc maf takes over at 4k rpm on a factory ecu where you would be making the most power.

@chriscorum1268 6 ай бұрын

Well it makes a cool movie prop

@lifeishard1211 6 ай бұрын

a couple thoughts, what was the spark plug gap set to? maybe there was spark blowout if the gap was too big. if there was a dead cylinder the air fuel ratio would have been leaner, what was that banks o2 sensor showing? edit for another question, I don't know what setting torque management should be set to for the engine and transmission but that could also be a factor.

@cockycarguylswayne2211 6 ай бұрын

I want to see a big bang video on the aluminum blocks only how much can they really take and what breaks?

@Sebastianbartledoo 5 ай бұрын

I'd do a re write entire on the tuneup with a charger on it. I've had injectors and o2 sensors go crazy for no reason.

@azicafoose 5 ай бұрын

I’m sorry to post this here, but … a bit inside baseball you should do some performance stuff for the 366/427 tall block medium duty engines. Also I’d love to see you dyno a poor boi 427 gen6 454 with 396/402 crank.

@richardholdener1727 5 ай бұрын

I don't ever see any tall decks in junkyard-but the same things work on a tall deck.

@richardfehr1838 6 ай бұрын

Blower is sized for a 3.8 liter. on the 5.3 liter it'll have to spin 40% faster not counting inefficiency at higher than design rpm. BTW, love the Harbor Freight stool.

@richardholdener1727 5 ай бұрын

already made 600+ hp-so there is plenty of flow

@Lsx-Brandon 6 ай бұрын

Had a similar problem (no boost tho) on my 13 at 260xxx miles, turned out to be multiple coil packs going out at about the same time

@jasonandjenparks1523 6 ай бұрын

Did you see a dramatic difference in required fuel to get the correct AF ratio? If the one cylinder’s coil was trash, that cylinder would skew the AF lean, which might give you a clue when comparing tunes. Just a guess

@lifeishard1211 6 ай бұрын

I just said the same thing, you beat me to it.

@richardholdener1727 6 ай бұрын

different injectors

@dantoole9970 6 ай бұрын

Compression test the Cyl to make sure it’s up to snuff could have a burnt valve a tuliped valve or a possible ring issue but I would say you might see smoke if the rings were bad.

@richardholdener1727 5 ай бұрын

compression test was done

@frozenstang3868 6 ай бұрын

Do a leak down then move forward from there. Once thats sorted get a pressure gauge on the exhaust ,most likely running into extreme backpressure with a cat that old.

@richardholdener1727 6 ай бұрын

we dropped the exhaust

@davebarnes1370 5 ай бұрын

Fix that thing Richard! Can't leave us hanging??

@drfeelgood2456 4 ай бұрын

Id like to put one of these on my 3.5l dodge challenger but i cant find any info on how to do it all mt stock interals are forged so i think it will handle the boost just need to find out how to build the mounting plate

@omerqawi9096 5 ай бұрын

Hey Richard! Love your videos I recently built a 302 with the summit b303 cam and would love to see you build one to see the potential of it, I'm new to the 302 platform and been trying to do a lot of it myself but been running into small issues. My setup is a 302 with forged pistons, gt40p heads, Edelbrock RPM 2 intake, b303 plus cam and lifters, comp cams beehive valve springs with titanium retainers, I've been struggling a lot of fine tuning the car granted I need to get a chip for the computer so I can actually tune it other than just the mechanical stuff but would love your input!

@richardholdener1727 5 ай бұрын

we use calibrated MAF and proper sized injectors back in the day, but actual tune is better

@gearratio380 6 ай бұрын

i would say just a good tune up and it should be ok, what about knock sensors pulling timing?

@ssdeuce 6 ай бұрын

Now I want to buy one of these superchargers for my 2001 Silverado. I know this is a fail video but I feel like you’ll get it easily

@lifeishard1211 6 ай бұрын

maybe demeuse engineering will make a few more adapter plates.

@richardholdener1727 6 ай бұрын

they are available

@derekfelber743 6 ай бұрын

Are you confident that the injector plug was making contact with the pins in the injector? Ive seen cheap plugs be janky and have issues making connection with pins. Could pup that rail out and crank it to verify spray out of all injectors

@FKE23837 6 ай бұрын

maybe that red plug at the back of the intake runner failed and caused a boost leak? or i hate saying it maybe bad tune/ injector timing off?

@novaracer2000 5 ай бұрын

I have a 5.3 in a s10 with a 78/75 vs turbo,sloppy stage 2 cam etc. It also has a #7 missfire and I have changed couls,plugs, wires,injectors and its still there. Sometimes it goes away and then comes back. Very frustrating. I recently pulled the wiring harness and checked it for bad connections and didn't find anything. I am having a issue with water gettung in my gastank that I will be addressing next but not sure that would kill 1 cylinder.

@EricErnst 5 ай бұрын

Happy Birthday

@tfriesen3866 6 ай бұрын

Try that coil pack. But, you really should have got a NA test before taking it apart for the swap. Time schedule being short, I know, kept you from getting it done before. Two years since the last NA numbers is not that good, if you’re saying the engine has 300k on it. You didn’t say if the knock sensors were looked at for pulling timing.

@erickbernard8208 6 ай бұрын

That bronco tho 😂

@rodolfolopez4824 6 ай бұрын

Worn cam lobe or worn/ collapsed lifter will also cause misfire. Had same issue. Checked voltage sparks on all. Check fuel and air. Tried coils, plugs, injectors. Nothing. Until changing out ticking lifter and cam. Misfire gone.

@larryalexander4833 5 ай бұрын

Dont recall if you said if you ran a compression test and a leak down test or not ? If fuel isnt the issue or spark ?? then compression from piston /rings or valve leaking possible on mechanical side. We know that it isn't timing causeit was running . Also you dont have a major vacum leak on that cylinder? Dont sound like it? Check cylinder pressure

@MrBlackbutang 3 ай бұрын

Should change your KZfaq channel name to: SPEEDMASTER ⭐️⭐️⭐️👏

@Scott_Buchanan 4 ай бұрын

You’ll get it figured out, it sounded cool 🤷‍♂️

@bobbeazley2502 6 ай бұрын

Welcome to the real world of being a mechanic! Nice job !

@richardholdener1727 6 ай бұрын

you would have to welcome me 35 years ago

@bobbeazley2502 6 ай бұрын

I was a GM tech since 1989. Doing the trouble shooting is the worst.

@gearjonny369 5 ай бұрын

@@richardholdener1727😂

@utahcountypicazospage5412 6 ай бұрын

Look at your exhaust pressure in the truck It’s a lot more than you have at the Dyno that little blower can’t move air thru stock stuff also turn up the boost to like 12psi 5psi in the truck

@richardholdener1727 6 ай бұрын

the blower works with stock exhaust-we also tested dropping the truck exhaust while on the chassis dyno

@randykeeton5622 5 ай бұрын

Put a temp gun on each header tube. That will confirm its a single cylinder problem

@Turbogto_guy 6 ай бұрын

Did you swap coils with another cylinder? You mentioned injectors and spark plugged being swapped but you didn’t mention swapping coils.

@MLFranklin 5 ай бұрын

Non resistor plug wires. (Ha! That's the standard answer now from anyone who watched Freiberger's Field Cer test)

@sjhudon386 6 ай бұрын

Is the trans slipping? I don't think it would still make 7 psi if something was wrong with the motor or the tune.

@nowayjose596 6 ай бұрын

You already know this but yeah, replacing the coil is the obvious next step. I just replaced one on my truck that was having issues intermittently but just not quite bad enough to actually throw a code.

@thatturbotruck 6 ай бұрын

Leakdown test would be my next step before spending any money. If that checks out then coil.

@nowayjose596 6 ай бұрын

@@thatturbotruck He said they did a compression test and that looked fine, so why would you go on to do a leakdown test in addition to that? Not asking sarcastically, I'm genuinely curious. If you do a power balance test and identify an issue with one cylinder, and then a compression test and that cylinder shows the same compression as the rest, I would move compression to the back of the line as likely culprits and go on to look at fuel and spark. I know a leakdown test can give you more specific information if there IS a problem related to compression, but I can't think of a scenario where it would identify a problem exists (that has been narrowed down to a single cylinder) that a compression test would miss.

@thatturbotruck 6 ай бұрын

@@nowayjose596 what you are saying is in general correct. But I've seen these motors have a slightly leaky valve and produce decent compression test results and test bad on a leak down. This is because a small leak may only be down 8-10psi vs the other cylinders which is acceptable yet when it's running and making 1000+psi when compression occurs that small leak becomes much bigger. It's not a guarantee or anything but a test you can run before spending any money is all. I would typically go for compression test first myself.

@nowayjose596 6 ай бұрын

@@thatturbotruckThanks for the reply. I agree, if he had a leakdown tester available then while he had the valve cover off would have been an easy time to test that cylinder just to verify.

@richardholdener1727 6 ай бұрын

we did a compression test

@brandonrohrer7914 6 ай бұрын

Its that red hose ontop of the supercharger sitting lose boost leak

@richardholdener1727 6 ай бұрын

it goes to the MAP-no boost leak

@conservativecrusader80 6 ай бұрын

Hey Richard, whats up! Ive been watching and commenting on your vids for many years, you are a workaholic! I know constantly looking for knew content after so many years can be challenging ive got an idea for you. Several years back maybe about 3 years or so you did a 5.7 Hemi big bang but that was with the old '03-'08 engines and the '09- present Eagle head Hemis are much better in many ways. For example the cylinder have smaller chambers yielding 10.5 CR compared to the 9.6 of the 1st gen, the heads themselves flow 330cfm vs 260ish, the block and crank are beefier, and ive been told so are the rods and pistons as well. What about getting a '09 to present eagle headed 5.7 and either progressively modded it maybe even throw a carb on it or go for the juggler and build another big bang eagle headed Hemi? Either way i think alot of us would love to see the new improved Hemi getting some dyno time. Keep up the fantastic work and God bless.

@richardholdener1727 5 ай бұрын

love to-they are expensive and I don't find them in yards

@baby-sharkgto4902 6 ай бұрын

Did OJ cut the plug wire?

@AutomotiveSpecialtie 6 ай бұрын

More than likely the coil. Wouldn't even mess around with swapping it to a different cylinder. Just replace with a known good. As for the compression being lower on 7, that will happen when a cylinder was fuel washed due to improper ignition. I'd bet after a different coil and a 10 minute drive that the compression bumps up more towards even with the other cylinders.

@faustthehammer8706 6 ай бұрын

on the factory 3008 2&3 engines i do belive the mass air fow is in behind the throttle body? its been awhile since i worked on 1 but i think thst part of the reason is youre not pulling enough air past the factory mass air flow? just throwing that out there cause location of that might be part of several issues.

@richardholdener1727 6 ай бұрын

the factory MAF on the truck is in its factory location

@kingdiesel68 6 ай бұрын

I couldn't imagine the air flow with the super Richie adapter plate is feeling all 8 cylinders evenly!

@richardholdener1727 6 ай бұрын

you need to watch the video where we ran 8 oxygen sensors on this M90 set up

@johnshamp8522 6 ай бұрын

300k could be alot of things lol, might be fuel pressure. Cam sensor on a LS? Haha cant wait to see that thing come alive!

@richardholdener1727 6 ай бұрын

not fuel pressure

@johnshamp8522 6 ай бұрын

@@richardholdener1727 it's gotta be fuel something then.

@mugen5204 5 ай бұрын

If the oring were to leak, I think it'd be more likely at the seam, unlikely the problem but I'd have put that on the front for better access

@richardholdener1727 5 ай бұрын

no leaks-boost was there

@fnafplayer6447 5 ай бұрын

When will Richard compare that gen 2 lt1 to the ls6 like he said he would which was 2 years ago?

@user-ox1gu9kw9h 6 ай бұрын

And inner cooler for better air density. Better for boost & increase of Combustion Rate.

@richardholdener1727 6 ай бұрын

no need for intercooler at this low boost with the correct timing

@Lou_sassel315 5 ай бұрын

Hello Richard! I have a question about an LS7. I’m getting a decent deal on a complete shortblock LS7 and I already have a set of ls3 heads and intake. Would the heads bolt on and not have any issues with Piston to valve clearance? Or would the different valve angle cause issues like premature valve wear? I don’t want to spend more money for a set of “fixed” LS7 heads and intake when I already have the ls3 stuff! Thank you in advance!

@jsmiley399 6 ай бұрын

Maybe the elbow you have on the supercharger is collapsing like on the engine dyno when you first tried to use the elbow an dthe m90

@richardholdener1727 6 ай бұрын

it was-but only at idle

@Prestiged_peck 6 ай бұрын

RICHARD is it possible y'all had a pinhole boost leak on the intake near that cylinder? Im thinking small enough that you'd still make most of the boost, but big enough to throw the AFR for that cylinder rich? Or potentially maybe you had a pre-02 exhaust leak on that bank? Also maybe you had a loose connection on that cylinder's injectir during the run, or perhaps that adapter is bad? I do think y'all shouldve swapped that coil before you pullet things apart

@richardholdener1727 6 ай бұрын

no boost leak

@chandlerlofton6536 6 ай бұрын

Cyl leak test. Then drop the y pipe to check for bad cats. Did you swap coil with another hole? I think you said you did. I’ve had a good comp test and still failed leak test. It caused a miss under load.

@richardholdener1727 6 ай бұрын

we dropped the exhaust

@driversranch215 5 ай бұрын

Dear Richard,I hope this message finds you well. I wanted to get your valuable opinion on engine swapping a right-hand drive FRS for competitive drifting. Currently, I'm running a 6.0L gen 3 turbo in a Toyota Soarer, but I've realized that the FRS has significantly less engine bay space for a ls turbo setup.As an engineering student, I recognize the importance of weight distribution, location, durability (engine), and cost. I am exploring options, and I have a family member with a scrapyard and easy access to engines. I aim to achieve 650+ whp, and I believe your insights would greatly help guide me in the right direction. I'm not a big fan of nitrous oxide and i like the LS turbo torque hp curve. Thank for the answer.

@richardholdener1727 5 ай бұрын

REMOTE TURBO WORKS OR A SUPERCHARGER INSTEAD

@driversranch215 5 ай бұрын

Do you think that the Vortec 4200 Turbo for space in the engine compartment can be good compared Ls supercharge or turbo?Or it's not worth it.@@richardholdener1727

@bobbywilliams5657 6 ай бұрын

Hi MR Holdener my question is can you use a high performance chip in OEM to adjust tuning

@richardholdener1727 5 ай бұрын

the older chip ECUs could be programmed with timing and fuel changes via changing the chip

@isaacblankenship1126 5 ай бұрын

Im struggling to find a camshaft for my 5.9 magnum that is soon to be a 408 stroker. I have a torque storm supercharger and its in a big truck. Id like to have good torque with a choppy idle.

@richardholdener1727 5 ай бұрын

I only see retrofits from Comp that are big enough-maybe another cam manufacturer

@jasonwilkinson726 6 ай бұрын

Check the gasket on the intake to the head on that cylinder

@richardholdener1727 6 ай бұрын

no boost leaks-boost was solid

@anthonyanderson1479 6 ай бұрын

I dont believe the issue is with the motor

@jongoin4404 3 ай бұрын

I think it has to do with the injector plug, coil pack or a combination of both on that particular cylinder. I don’t think it’s a spark plug because you said that you swapped them around, correct? If it were a spark plug and you did move them around then it would’ve followed the plug. The only thing you messed with was the injector plugs and it’s possible that you could’ve had a weak coil when it was N/A and ran fine until boost was applied. 2 months later and have you pinpointed the issue?

@ChurchAutoTest 6 ай бұрын

Rich it looks like you're running the factory ECU. So does that mean you're using a flex fuel sensor? Some of the aftermarket FF sensor kits pull power from the #7 coil harness and we've seen some cars develop a dead miss on that cylinder when the FF sensor is plugged in for some reason. Powering it from another source fixes the issue.

@richardholdener1727 6 ай бұрын

we didn't run a flex fuel sensor

@bensollman8882 5 ай бұрын

Tight converter a possibility?

@shaneshane1379 6 ай бұрын

Don't rule out the catalytic conver. My all aluminum 5.3 always ran like a beast. Started getting worse milage and running weak.

@richardholdener1727 6 ай бұрын

we dropped the exhaust

@InnocentMiscreant 6 ай бұрын

Install fresh coils and run it again and remove exhaust to verify if the supercharger isn't over loading the 330k mile converters

@greenbassboosts8872 6 ай бұрын

In live stream he said he removed the cats for a test and only marginal power increase onserved

@miguel300ish 6 ай бұрын

Hey ! Flow to rpm is the problem I don’t think the m90 is efficient enough . That’s why you’re getting a cylinder that doesn’t get any flow .

@richardholdener1727 6 ай бұрын

no-the blower made over 500 flywheel hp

@cryptoredneck8255 6 ай бұрын

I had a similar problem with cylinder 6 my Silverado. Turned out to be a hair line crack in my spark plug. My cateye is also picky with plugs! It will idle fine then miss in the 2-2500 rpm range.

@bobroberts2371 6 ай бұрын

I had a spark plug that the insulator cracked. Sounds obvious to find except it was on the combustion side so when installed in the engine, the insulator slid down against the ground strap blocking the spark. ( think about how you would look to see if a plug was firing out of the engine. . . _)

@jongoin4404 3 ай бұрын

@@bobroberts2371 Find somewhere really dark and start the motor and look for arch’s. Guarantee you would’ve seen the spark even if it was blocked and you couldn’t see it during the day.

@bobroberts2371 3 ай бұрын

@@jongoin4404 So you are able to see inside the engine while it is running? The insulator was cracked on the combustion side of the spark plug and would slide up and down on the center electrode. Hold the plug threaded side up and the insulator would slide making the plug look normal. Hold the plug threads down and the insulator would slide down covering the gap and spark.

@user-ox1gu9kw9h 6 ай бұрын

& Replace ECU With Better tuning capabilities to improve spark timing. AS WELL AS A LS CAM SWAP. To accommodate the increase of intake and exhaust.

@user-ox1gu9kw9h 6 ай бұрын

& Increase fuel injection rate.

@EGGINFOOLS 6 ай бұрын

Replace the ecu for 7psi? 😂

@kevinstevens2775 4 ай бұрын

Knock sensors I’ve had this problem

@onelostsoul1997 6 ай бұрын

I guess at 330,000 mi you don't need to worry about ring gap. It's already self-gapped.

@richardholdener1727 6 ай бұрын

that doesn't happen

@sons_of_slewfoot_garage 6 ай бұрын

The lm7 in my turbo s10 had 267k. Went to check ring gap and they were .025-.026 on top and .027 to .028 on the bottom. Slapped em back in and kept the file fit rings for my lh6 lol

@onelostsoul1997 6 ай бұрын

@@sons_of_slewfoot_garage back in the '80s when I did small block overalls used to see excessive ring gap but that was mainly due to cylinder wear I seen up to 0.40 ring gap and seen it worse than that but I said it was due to excessive cylinder wear to where the block had to be 40 to 60 over to clean up because it would have a groove off to one side at the top of the bore. I'm going to be honest I've been out of the game for a long while. Just got back in and everything I seen in pictures and video on the new LS and LT motors. They don't have that issue anymore like the sbc. Thank God. The L59 5.3 with 159,000 on it I picked up when I did the tear down the ring gap was top ring was 0.29 second ring was 0.32 and that was pretty much the same across all the cylinders. That was quite a ring gap for a stock motor with that many miles. The rod and main bearings were perfect! So upgraded to Gen 4 rods and upgraded to summit racing forged pistons raising my CP to 10.6 with 243 heads with a new Z06 camshaft and new cam bearings because I looked at them when everybody said don't.

@onelostsoul1997 6 ай бұрын

@@richardholdener1727 Rich, I based what I said on when I used to work on SBC back in the '80s. Most of what I saw had excessive cylinder wear causing a large ring gap and the cylinders were kind of oval shaped where they had to be bored to 40 to 60 over to clear it up by then the engine at 60 over pretty much junk for a daily driver. But from what I've seen of the newer engines in pictures and videos like you put out in your videos the engines don't have that excessive wear like the sbc did back in the day. I stopped doing engine work in 1987 it went full-time in the car, audio and security business. That's where the money was at that time everybody had to have the boom in their ride. And nobody was going fast with a 1000 to 1500 lb of car audio in their car or truck. LOL The only drag racing I was doing was drag racing but those days are over. My hearing is screwed so it was time for a change of pace.

@04silverado6.0 6 ай бұрын

After swapping coil packs i would try raising the spark dwell in the tune and see if some of it clears up. Not going to hurt to run a little more dwell in these coils.

@scottc74 6 ай бұрын

Did you check for slippage in the trans., and just in case, did you change the torque management settings in the "ECM/TCM"?

@yeahididit9054 6 ай бұрын

Ish was in the driver seat doing the tuning 100% that’s correctly done

@jongoin4404 3 ай бұрын

Plus a bad transmission isn’t going to make one cylinder “dead”. I think it has to do with the injector plugs, coil pack or a combination of both. I don’t think it’s a spark plug because they swapped them around. If it were a spark plug then it would’ve followed the plug. The only thing they messed with was the injector plugs and could’ve had a weak coil when it was N/A and ran fine until boost was applied.

@bens8696 6 ай бұрын

Oh and bypass valve open.. lever. might be stuck on something keeping it open

@richardholdener1727 6 ай бұрын

did you see the part where I said it made 7 psi, boost was there