Chevrolet / GMC - Rough Running, Lean, Misfire

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Chevrolet / GMC - Rough Running, Lean, Misfire

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7 жыл бұрын

Come along with Eric O. at the SMA shop as we have a look at this 2001 Chevrolet 1500 5.3 that came in with a lean misfire. The engine light is on with codes P0300, P0174 and P0171. Ends up not being your average intake manifold gasket leak.
Chevy Truck Intake Leak Diagnosis: • Rough Running Only Whe...
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Пікірлер: 403

@davidstone7073 4 жыл бұрын

Finally a real mechanic that knows WTF he's talking about wished I'd have known him about $5,000 ago

@gaskinsgarage4192 4 жыл бұрын

I'm at 3500 well see if this works.... smh

@csimpson8554 2 жыл бұрын

Eric is a gem. Methodical diagnosis instead of “ throwing parts” at a problem and friendly demeanour make easy viewing. Thanks Eric !

@willdes8330 Жыл бұрын

There is always an honest guy / Mechanic out there , Eric . That is you sir. You have given me and others more information than anyone that I know. Stay on the straight bud. Thanks for showing us all, that there are still honest people around.

@willemstreutgers1154 7 жыл бұрын

Smokemachine's and especialy those that can deliver pressure are saving you much time and for the customer money. Eric good and clear explanation in this video.

@rrmech11 7 жыл бұрын

Eric I look forward to all your videos. You make the repairs look so easy. One day you'll have the most subscribers of the repair vids out there. Even etcg

@MrSeitnap 5 жыл бұрын

@chrisbowling27 5 ай бұрын

Another well explained diagnosis video. Thanks for taking the time to explain each step that you perform to figure out the problem. You are the man!

@motorhead6763 7 жыл бұрын

Usually a intake gasket leak leans out only a few cylinders. One can pin down by cylinder efficiency test and or smoke test intake manifold and see what comes out of crankcase. Aluminum intake and heads expand and will seal up only if a piece of the gasket didn't come off from vacuum. Brake vacuum booster also common issue on older stuff. Excellent show. Thanks.

@rexgexnortowmader5165 5 жыл бұрын

Your Wisdom amazes me. I wish I lived near you. I am a mechanic not by trade but I can turn a wrench. Did a lot in the 80's&90's before the computers took over. THANKS FOR THE INFO

@mikechiodetti6737 5 жыл бұрын

Great Video! It's all about the relationship of the sensors and the fuel trims! Smoke machines are FANTASTIC!

@joecoleman7666 7 жыл бұрын

Thanks Dr. O for another quality video showing the folks how to diagnose, repair, and verify the fix. I'll be looking forward to the next video. Hopefully your deer season is going well.

@joshu417 5 жыл бұрын

love your videos man! like I learn more here than I do in some of my classes at my college. your great and thank you for your hard work and time you put into making these videos!

@jeffreynobles948 5 жыл бұрын

I have a 2001 Chevrolet S-10 4.3L, and it doesn't go into closed loop until around 140* F, which is normal for these vehicles. Mine usually takes around 5 -10 minutes or so of idling to achieve this temp; even less if the vehicle is driven. Maybe only 5 minutes or so when I drive it, of course, depending on ambient air temps. Great video as always!! Really appreciate it!!

@leehodge2415 7 жыл бұрын

loving the closeups. great job. consistent improvement

@garybennett7851 7 жыл бұрын

Eric, that's not true, if you can do it anybody can. You are a very gifted mechanic with a a great mind, common sense and a knack for problem solving. Love your videos. You are also a gifted teacher.

@stuckinsideofmobile9957 5 жыл бұрын

and a lift

@reefalawson8051 5 жыл бұрын

@@stuckinsideofmobile9957 Lo pooh

@davidoickle1778 4 жыл бұрын

Much if the time, when you're using those scan tools, I have no idea what you're talking about, so . . . . NO, I couldn't do it. However, I still enjoy watching YOU do it. Hats off to you.

@rc3140 7 жыл бұрын

Another fantastically AWESOME show 😉thanks Hunter O🍻cheers and good wishes to you and your family this holiday season.

@butchkanoff8577 5 жыл бұрын

🤔 It’s nice to see that there are still other shops like myself out there that actually do diagnostic work an not guesswork type of repair. nice job 👍I particularly like the parts Canon that was amusing but so true about many places.

@shubba302 5 жыл бұрын

We are the shop that gets the parts cannon test cars towed to us. We Love actually diagnosing instead of clearing the parts stores shelves out.

@JoeJ94611 5 жыл бұрын

It must be satisfying as an auto tech to watch as the computer gives your repair its stamp of approval.

@danielraymadden 6 жыл бұрын

1. Purge solenoid 2. Vacume leak smoke test, Fuel pressure regulator hose to pressurize system 3. EGR valve leak 4. Intake tube broke 5. Exhaust manifold 6. Air intake manifold leak replace seal, 7. Replace injector electrical harness 8. Throttle body seal. Check cam shaft sensor and crankshaft sensor. Check 02 data oxygen sensor.

@HCFX2011 7 жыл бұрын

Had the same problem recently on my 4.8. Bought it cheap because it ran like crap and the guy thought the intake manifold gasket was leaking. The EGR to intake tube was cracked pretty severely. Slammed a Dorman (!) EGR tube in there and it runs like a champ now.

@0ptimal 5 жыл бұрын

Just stumbled across this channel, glad I did. Very intelligent and in depth.

@63256325N 6 жыл бұрын

The update to the Veris seems to have sped all it's functions. Nice. Thanks for the video.

@SmittySmithsonite 7 жыл бұрын

I need to get me one of them smoke machines! I never would've found that one, I don't think. Just had a '00 Taurus here, 3.0 DOHC, with the exact codes. I did the ScannerDanner water test, and could hear it getting sucked into the upper intake manifold gasket. The P0300 then changed to a P0305 as it warmed up. Ran real rough cold, and the freeze frame temp was 64° - was confident that was the issue. Ended up doing the lower manifold gaskets too, and the #2 & #3 coil packs, since I had just changed the #1 this summer for a misfire. Checked out the fuel trims afterward, remembering you mentioning that in one of your vids, and they came right down! Was a happy day for me! Things don't normally go that smooth around here, lol. I owe you and ScannerDanner ALOT of beer. ;)

@haywardsautomotive6156 7 жыл бұрын

Nice diagnosis as usual. Can't live w/o a smoke machine nowadays in a shop environment...saves so much time hunting down leaks. Should have another lifetime SMA customer or at least another to spread the word!

@SouthMainAuto 7 жыл бұрын

I dunno they always tend to migrate back to the parts changer shops for some reason I will never understand.

@haywardsautomotive6156 7 жыл бұрын

South Main Auto Repair I can't figure it out either especially how another shop can shoot at a car with a parts cannon, not fix the car and then charge the customer & ship it and the customer pays it. I can't do that...

@eggbrook 7 жыл бұрын

I'll never understand it, I'd rather pay 3x more and have it fixed once, then go cheap and keep dealing with it. This is why I fix my own car.

@aaronmance8961 6 жыл бұрын

I've seen people use a vape as a smoke machine too

@RobertCiampa9112 7 жыл бұрын

Thanks SM I wait for these vijeos every day.

@thomasstreetman8066 Жыл бұрын

Mr. O. nailed it. That EGR tube was smoking like a chimney.

@fctryoffetsh39 4 жыл бұрын

My wires sparking and just had plugs replaced,your a good mechanic👍👍

@creedux 3 жыл бұрын

Just replaced my EGR valve and tube assembly this morning and resolved my issues. Funny thing is is that your video popped up in my video feed after i did the repair haha.

@dannyss7117 2 жыл бұрын

What code was popping up for you ???? @chris L

@creedux 2 жыл бұрын

@@dannyss7117 at that time my truck had multiple codes for different issues but that one was a P0300 misfire

@BeADad2447 2 жыл бұрын

Trick my grandmother showed me! 🤣🤣🤣 great video. Incredible the amount of knowle needed to work on modern vehicles!

@jorgeperezdeprado8941 2 жыл бұрын

Nice vid, I'm working on my 5.3 and it does that rough idle shit in the morning but only on cold days. Changing the intake gaskets this weekend.

@Badgertronix 7 жыл бұрын

nice to see the after data. Cheers!

@butchcassidy5398 7 жыл бұрын

great information once again Eric'O!!!! sweet Diagnosis

@automotiveaddiction428 2 жыл бұрын

I'm glade you did all the videos..I'm not rich and own older stuff...and I'm trying to drive my chevy truck..but its a lemon..so I'm trying to get it running again

@rau1367nt 7 жыл бұрын

I just did the same job on my '99 back in Sep. That stainless steel tubing is a very poor grade to corrode like that. It cost a lot more than it looks. Good work!

@davidhoekje7842 7 жыл бұрын

The way that the short term trim went to -10 and held there, and it jumped out of closed loop, suggests to me that it's a software routine to protect the engine from sudden unexpected operation. I don't know if the -10 short term adjustment was used during the second open loop period, but it seems likely. The behavior looks a lot to me like an intentional routine, maybe to give the O2 sensors time to heat up more.

@dronedbr 7 жыл бұрын

I made a smoke machine with my son's nebulizer and a cigar in a container with a lid and hose. Worked perfectly and was an easy build.

@rossdickens 6 жыл бұрын

I have a 96 GMC that had a misfire code. I replaced the coil, now it runs like new!

@tomsmk3 4 жыл бұрын

Damn I wish it was some guys like you down here in jersey, that will take time to look at fuel trims and stuff like that....good job man👍🏿👍🏿👍🏿👍🏿👍🏿👍🏿

@wyattoneable 7 жыл бұрын

I think that's cool other shops recommend you. You've made a good name for yourself Eric. Others in the KZfaq community have also taken notice. :) Be safe in your travels and thanks for posting Chevy work. I'm the most familiar with Chevy's and feel right at home. By the way, that Jeep I went to look at for Paul was junk. No sale. :(

@murariufamily 7 жыл бұрын

It is cool that he has made a good name for himself. Frustrating for me as I cannot find a SMA type shop in my area. Seems to be the motto around here is Guess not Test. and if you try to get them to own their mistake you get some run-around. Dr. O is a stand up guy!

@wyattoneable 7 жыл бұрын

To Dave M...one reason I'm here is because I'm tied of being ripped off. At the very least I will be an informed customer and hopefully over time I will be my own technician. Thanks for supporting SMA!

@thelazyhandyman8581 2 жыл бұрын

Great diagnostic skills. Good catch on the EGR pipe!

@rosscharlie5349 7 жыл бұрын

A logical easy diagnoses Eric So why have you got 6 dislikes from the cheap seats . With out you they'd be out of work . Respect to Mrs O. Daz UK

@johneric3886 5 жыл бұрын

Nice work Eric-O another great video.

@doingforme 2 жыл бұрын

Awesome videos friend, thanks for doing these . It really helps a poor fella save ..

@Randalamarion 4 жыл бұрын

Got that “undertaker” sounding voice lol. Great video, very clear and straightforward.

@jenncox2642 5 жыл бұрын

Every time you mention Shooting the vehicle with the parts cannon I giggle. Kinda like the Brake Clean sound effect.

@theoldwizard998 7 жыл бұрын

Most DIYers won't have access to a smoke machine, but that WAS a quick way of finding the leak ! I assume you always verify your repairs, something I am not certain all shops do.

@bg147 7 жыл бұрын

Well, you could always burn a stick of incense for smoke, play some Jefferson Airplane, and mingle with your Zen Buddhist friends..... or not.

@theoldwizard998 7 жыл бұрын

I found a couple of home made smoke machines on KZfaq. The cheapest and simplest was a plastic peanut butter with a couple layers of aluminum foil in the bottom, a low pressure air inlet and a smoke out let. Light one piece of charcoal and place it in the bottom. Add some shredded cardboard and screw on the lid.

@jimgordon3206 2 жыл бұрын

Another excellent explanation. Not to mention detective work. Thanks.

@Minister1246 3 жыл бұрын

Awesome! Been having the same troubling with my 2009 Avalanche. Think problem is solved 🙂

@joepolen7212 7 жыл бұрын

Hi I am a new subscriber and I am enjoying your thought process and use of tools to logically troubleshoot problems. I am not a mechanic, do not have a shop and am retired. I do look forward to viewing your videos and want to thank you for taking the time to do them, you have become one of my favorite channels to watch. If you have covered this before, if so forgive me for asking, but how do you keep track of all the hardware and parts while waiting for parts and machine shop work and not lose anything? When I work on something, stuff gets dropped, misplaced or I forget where or how it goes back together.

@xx3868 5 жыл бұрын

as a cheap alternative to the smoke machine, use a fat cigar and a rubber glove over a round part of the suspected pipe system. then blow lots of smoke in till the glove starts to expand and become inflated then squeeze the glove which will force pressurised smoke out of any weakness/leaks if not already leaking out of. Works great!

@splash5974 6 жыл бұрын

I enjoy watching your vids!

@Krillekris 7 жыл бұрын

Great video as always. You keep it fun and educational :-)

@andyhall9069 7 жыл бұрын

Wow! Very impressed! Thanks for the help.

@twincam825 3 жыл бұрын

Thanks for posting all theses videos.

@kyhomegarage3430 7 жыл бұрын

Good job we are thirsty for more cheers

@BrandonF601 7 жыл бұрын

Thanks for the video there Mr. O. Wondering what you have for exhaust ports in your bay doors. I got the same tubing but still have to crack my door which gets kinda cold. Not New York cold, but cold lol.

@davidkroth 7 жыл бұрын

Five stars, as always!

@aaronshensky9385 5 жыл бұрын

Good diagnosing. I need me one of those smoker machines.

@2009KVFD976 5 жыл бұрын

Awesome videos on this channel! Can u explain short and long term fuel trims and how they should look? Maybe possible solutions if they r out of whack.....

@FireEater 6 жыл бұрын

Love your videos thanks 👍🏻

@denniswilkinson1118 7 жыл бұрын

Great video, keep'em coming

@nicholasbehnke4421 Жыл бұрын

Hey love your videos have a similar problem like you're talking about on that truck roof lean all that nobody can figure it out runs fine when you first start it though

@av8tore71 6 жыл бұрын

Your grandma is a very smart lady

@danielvaldezaguirre 7 жыл бұрын

Dude almost 55k subs you'll reach the 100k milestone in no time. Keep th vids rolling, what happened with Mrs.O hondu switchs repair footage? I got a Hyundai Santa Fe 2012, would you use blue threadlock on the caliper bolts? I didnt see any upon removal.

@atomicdmt8763 Жыл бұрын

outstanding! thank you for your service!

@Ugomakediciples 2 жыл бұрын

Thanks needed this one! Now to find the EGR Valve!

@flyinhawaiian2839 7 жыл бұрын

Hey Doc, as always, nice vid. Just out of curiosity, if the truck had a return-less system, where would you have hooked up for your vacuum source?

@jaymekillaby2750 6 жыл бұрын

I have a 2000 gmc single cab short box 4x4 and it starts rough cold and warm spark plugs and wire have been changed fuel ejectors have Been checked and are good I don't what else would be wrong

@carlkraus6034 3 жыл бұрын

I would have liked to see you get that part off the exhaust manifold.

@rivasb495 6 жыл бұрын

Need help, my 2008 chevy avalanche has that 0300 and hesitated a little, hard to fuel but replaced the purge solenoid and that did it, still has the 0300 code plus the hesitation, definitely could hear a whistling noise on the right side of the engine

@davewilliams4556 6 жыл бұрын

I had this issue on my 2000 silverado, after manhandling the flex tube with intake gasket change. I bought the dormann replacement, which was not formed quite right. I am petrified to bend/contort the tube so it bolts solidly to the block. I have two gigunda zip ties holding it to the oil filler. and natually I broke off the two bolts at the exhaust, which meant for a fun Sunday of drilling in a place where you can barely get a wrench. any suggestions on how to bend this tube and get it properly bolted?

@rotorwing100 7 жыл бұрын

Prior to smoking an engine, is it safer to roll towards your buddy or your body. J/K. Great video as always.

@kodygeorge9305 5 жыл бұрын

Could you help me my o8 is running rough at idle and backfires and when you get 55 60 it wants to slow down and backfire then drops a gear, if I put it down 3 which is 5th gear it goes fine but when I get up to speed it spits backfires and low power, I think cylinder 1 has low compression is it the rings or collapsed lifters I heard that's a problem with the afm system, or is it something little I can't seem to put my finger on it, lifters aren't to hard but bad piston or rings is

@CHIBA280CRV 7 жыл бұрын

Excellent I know you wasn't going to end it just on the findings, thanks you for finishing it up with the Verus...

@shaungriffin4617 5 жыл бұрын

You have an yukon/tahoe videos mine has a rough idle and hesitation when driving with no codes after a po455 was reset ?? New wires and plug

@chungaleta1234 7 жыл бұрын

Great video... That closed loop issue... Could it be that the thermostat is open???

@Disrupptive 6 жыл бұрын

If you were to spray carb cleaner near the hole in the EGR tube, would you be able to notice a change in rpm? Having similar misfire problems with my 2001 Silverado 5.3L and tried spraying carb cleaner around the intake gasket and don’t notice an rpm change. Thanks!!

@taycc4235 6 жыл бұрын

Good idea with exhaust pipe out the garage door. never thought of that.

@petebovenzi8119 3 жыл бұрын

This man is ingenious

@fleiva30 6 жыл бұрын

excellent job

@awd42 7 жыл бұрын

Is it just me or this new Verus a lot faster (more responsive) than your old one? Great diagnosis; wish I had a smoke machine!

@AsdAsd-ej3wz 4 жыл бұрын

IT AMAZING HOW MANY SHOPS DONT HAVE A SMOKE MACHINE

@fieldsofomagh 7 жыл бұрын

On top of old Smokey, all covered with snow, I met the old Chevy with a leak down below. Invites for the 2nd verse please 😁.

@arciefan 7 жыл бұрын

Sure, I told you I'd leave the money lights on, So even in the dark , you can find your phone, You laughed and said that's one way to impress me Now this old car keeps falling apart Even Eric O says it's a crank/no start So gotta do something or all my friends will laugh at me Cause now every light on the dash is blown, She called and said don't even come home Cause every light on the dash is blown Even Eric O says you're on you own

@sknemo 7 жыл бұрын

Sent you another 10 bucks, your comment about hard starting after refueling may just be the ticket for a friends' Traverse. Gonna check his Purge Valve Solenoid when he returns from Europe. Thanks for the excellent videos.

@leebarnes655 7 жыл бұрын

I didn't really catch that part, he did say that they will cause both rich and then lean conditions though. Just be sure to try and blow thru the new one as they often come from the factory already stuck open -- just because it's new doesn't mean it works these days. Cadillac forum had one guy with four new ones before he thought to pucker up and blow thru them, and all were open. Refueling loads the canister with fumes so it's hard to start and when it does finally, the engine revs up out of control so severely that many shut it off, just to repeat this episode several times whenever they fuel up.

@sknemo 7 жыл бұрын

6:50 in Eric says " they usually have other complaints like hard start after filling", or something similar. Thanks for your comments, I'll be checking new ones from now on!

@GregSr 3 жыл бұрын

As I watch your videos, I like to try and guess what the problem is before you figure it out. My batting average is not too good. I've been keeping my own cars running since I got my driver's license in 1969. I currently have four GM cars ('96 Impala SS, '03 Corvette, '88 Corvette, '88 Trans AM). As you can guess, they keep me busy!

@johnjones8021 5 жыл бұрын

I fixed a GM trouble code p0305 ....cid # 5 ..had good compress...new plug/wire didn't help ... change only one injector , not the whole spider...it can be done... runs like a champ now...

@bradlethbridge5418 6 жыл бұрын

Hey Eric. Not sure if you see these comments or not but if you do maybe you could help me out. I have a intermittent issue with my truck and no other shop it's been to can figure it out. 2002 Chevy Silverado 2500 6.0 It started awhile back. At least 4 months now. When the truck hasnt been running for awhile and you start it, it runs fine for about a minute or two and then begins to surge in idle and has no power what so ever. As you drive for a few minutes the power is restored and it drives as normal. If you shut the truck off and start it right back up it will drive fine. It only does it when it's been sitting for over night and not all the time. The only code it throws is a random misfire code p0300 and when it clears up the engine light goes out. I've checked for vacuum leaks and got nothing so far. After seeing the video when you explained fuel trims I checked that. My short term fuel trim on one of the banks was -31. The other bank was normal. When the truck starts driving normal again the fuel trim returns to normal. Every shop I take it to they say it's not acting up for them. (Sometimes it goes a awhile with out doing it) now it seems to be getting worse. My scanner is only one of those cheap actron ones so it doesn't do everything just the basics. I've watched so many of your videos and I feel like I am close just need some help. If you have any suggestions I would really appreciate it. Brad

@gmguy156 6 жыл бұрын

Whats the typical RPM at idle on 2004 Silverado that you've seen? Mine seems alittle low

@matthewwalker6303 4 жыл бұрын

I just want to know how many scan tools do you own.. I think I’ve seen you use at least 5 different ones .

@rbarr955 6 жыл бұрын

Eric O. What is the best intake manifold gasket set brand to buy. Its for a 2003 chevy impala 3.8l

@inhocsigno9151 5 жыл бұрын

'Every light in the dash is on, EGR blowed at the crack ah dawn', sounds like a Trace Adkins song.

@CARRJ142 2 жыл бұрын

Another great video.

@luisalejandrojorquera3307 6 жыл бұрын

excellent detection congratulation Men./

@chuemoua6834 2 ай бұрын

Great info I’m having this exact same problem on my 5.3 vortec … fuel trim and 43, 44 on both bank and lean code . Should I check this and the intake manifold ?

@crank3646 7 жыл бұрын

It is interesting why , when the two long terms went to 0 , the B1S2 was reading lean and B2S2 was reading rich .

@chokob13lls Жыл бұрын

Great video but if I may ask to what line did you connect that smoke machine to?

@LibbyMiller7320 4 жыл бұрын

I noticed my engine seems to be leaning back almost like it is going to fall back! What could cause this and how would I go about fixing it?

@jamesshivers8213 4 жыл бұрын

Smoke Machine in use.I like it. I think I can do it. Thanks

@ivewaited 4 жыл бұрын

I have a 98’ Ford Mustang V6. The car drives great but is idling after having the intake manifold gasket changed. Throwing code P0305. Any ideas?

@pontiac961 7 жыл бұрын

hey DR.o..u know if it was a 3 or 4 wire o2..4 wire o2's have to be min.1200 deg.f before they will start reading..just a thought...also on a sidenote.At 20:49 i seen the longterms go back to +25..or do i need to go see a shrink?