@Fishermanguy44 lmaoo

@StreetCarz weak ass stomach

Jay S Glad I could help

Run a can of Techron thru it. ^^ Our stock injectors jump out from under themselves on launch and through the rpm range. 240k miles, 23 mpg, no lift and on stock 225/15's I do not get this mod at all.

Fuck what people think! Do you

Do you have a part number? Thanks

Use Vaseline

@@treychastain4686 yeah but most shops/garages have oil laying around not Vaseline lol

Any petroleum based stuff should be avoided on natural rubber. Vaseline is petroleum based and will deteriorate rubber, Trey. ;)

@@AudioFreqx that's odd since every engine builder I know, me included use Vaseline. Have for years and hundreds of motors

@@treychastain4686 Just an old aircraft mechanic and old habit. Current o-ring technology does not use natural rubber. I use Silicone as a general rule = safe for ANY o-rings, then and now. Just shows my age and yours. Any mechanic old enough to have used natural rubbers ones should know this or they were simply imitation mechanics. ;) As you were.

What issue's are you having?

@@OutJeeping misfires, check engine light comes on for injector misfires. I put my original oem fuel injectors back in and it runs fine.

Have you reset the ECU and taken it on a handful of drives so the ECU relearns the new injectors? If so, there could be a possibility of a faulty injector. I would then diagnose with a multi-meter or swap the injectors around and see if other inspector codes pop up to help identity the faulty injector. K Suspension has a lifetime warranty on the injectors. So if you got a bad injector I would contact them and get it replaced.

@@OutJeeping I have reset the ecu and driven it. I had a bad injector on cylinder 6. The code was for injector 6. So Switched it to 1 and it misfires on cylinder 1, so K suspension sent me another one. I installed, reset ecu and drove it around. Now injector 5 is misfiring. I don't get it. 🤷🏻‍♂️ put my oem ones in and it runs fine no check engine light, no codes.

j'ai commandé des injecteurs pour YJ4 l chez K. Suspension je viens de vérifier la résistance elle est de 12,4 au lieu de 14,5 et ça sur tous les injecteurs, je crois que je vais pas les désinstaller...

Same thing I was thinking with the liberal amounts of wd 40 everywhere superlube is what I use on rubber O rings

Even Vaseline would be better than wd40

Have you just tried replacing your TPS? That sounds like a tps problem to me, with bucking, hesitation and rough idle.

Mine runs great with 4 hole injectors

WD actually contains petroleum distillates (paint thinner). WD's main attribute is water displacement. Silicon grease will not only make it easy to install but will remain there for a very long time to help the seals do their job down the road. A nickel's worth of free advice. ^^

I personally use superlube silicone grease but just spraying some WD on the o ring & not soaking them in it won't hurt anything. Most o rings are not natural rubber any how, besides what do you think gas does to them ?

I don't recommend WD40 for "lubricating" anything rubber based. That's not what it's intended for and it WILL dry those o-rings out. Petro gel is the way to go. WD40 does however work great for removing/flushing contaminates and getting bolts unstuck.

Did you get the 4 hole injectors or the 12 hole injectors like in the video?

@@DustySteel 4 hole

How are they?

@@David-rj1ru I installed them just before the cold weather hit so hard to tell about fuel mileage but acceleration is great, no more "flat spots". Although stock ones might have been a little dirty after 63k miles. Hint: use a decent grease on the seals so they don't leak, I used Dielectric grease after 3 leaked lol.

@@YobieTheQuestioner heard

Interesting, Thanks

@@OutJeeping So did this eventually work?

@@David-rj1ru Havent tried it with gasoline

@@OutJeeping wait what? I wanna injector but I need more info. I have seen guys do it without unplugging ecu

@@David-rj1ru www.ksuspensionfab.com

Gotta get injectors with equal flow rate or they will increase gas usage. KZfaqr nickoftime has a couple of vids on how to find them. I have it in my car and jeep secrets fixes playlist.

You must mean NickInTimeFilms? Yeah I follow him. I still got shitty mileage. This 'upgrade' is not all its cracked up to be.

@@jethro9341 thanks for the info. I'm thinking that besides getting flow rate correct, one needs to make sure there are no vacuum leaks whatsoever, and for jeeps, a smoke test is a must. Any tiny vacuum leak will force the computer to run richer. My fear of doing this swap is that I will break them!

The 4 hole injectors is the best way to go compared to stock injectors, and/or the 12 hole injectors. K Suspension did a video comparison where he took an XJ to a dyno (i6 4.0), he got the HP and Torque results on the first run with the stock injectors, 2nd run was with the 4 hole injectors, 3 run was with the 12 hole injectors. I forget off the top of my head the exact results, but the 4 hole injectors added more Torque and HP over the stock injectors. The 12 hole injectors had a little bit more HP or torque (i forget, it was 1 or the other), but had a considerable amount less HP or torque compared with the 4 hole injectors. I know that may sound confusing, basically the 12 hole injectors had a little more HP, but less Torque, or a little more Torque, but less HP. However, seeing that the vehicle did not have time to "learn" the spefic characteristics of the new sets of injectors (which takes a few complete drive cycles) the test is kind of invalid, in order to see the true HP and Torque numbers, he would have to have a set of injectors installed long enough for the computer to learn the characteristics of each set of injectors, which would fine tune how the vector would control them for optimal performance. However, even with the computer not having time to "learn" the new injectors, its atleast a good baseline to go off of. Also, the 12 hole injectors are more likely to have problems due to the fact that the holes are so small, they get clogged up very easily, which effects the spray pattern, efficiency, and overall performance of the injector, which results in less efficient air/fule atomization, and less efficient burn. When that happens, it leads to carbon buildup, and a host of other problems that come up as it gets worse. Stock injectors are o.k. 4 hole injectors are the best overall 12 hole injectors are just not worth it

@@p.j.vallier9197 Wow nice post!

good to know!

Eugene Williams I've had it off for a couple months and haven't had heat soak yet.

Tin foil wraps ^^

The injectors have nothing to do with heat soak that’s a flaw in the design of a amc in-line 6…heat rises and the exhaust manifold is below the intake which is what allows the exhausts temps to heat your intake air temps up and again heat up your injectors & fuel temps so heat shielding is a must for any in-line 6 Jeep that’s going to be used off road or in harsh conditions….anyone mall crawling the sheetz parking lot 🤣 will never experience any issues with heat soak though it sounds cool when they’re comparing who has the “most modded yeep” ©

@@OutJeeping if you wheel the Jeep your gonna have heat soak from the design of your AMC in-line 6 wrapping the exhaust manifold with high heat wrap then making a heat shield for your intake & reinstalling your fuel rail heat shield helps substantially to prevent this from happening….just some things we do with ours from years of experience building trail rigs….these are extremely dependable motors but they get hot & that heats gotta go somewhere if at all possible venting the hood really goes along way but it’s not practical for some so heat shields & good quality heat wrap helps things allot…also worth mentioning a 160 or even a 180 t-stat & flowkooler hi-flo water pump does wonders for keeping the temps down since it doesn’t take much pushing on the gas under load to see temps climb past the typical operating temps if you get stuck in the mud or on a steep hill it’s really easy to overheat a 4slow

those heat shields are important. They stop injector from vapor lock. in other words it stops the injectors from overheating and it definitely does happen since jeeps naturally run hot.

​@@c.m.229 I have a jeep I worked in a jeep shop, I understand 4.0 vapor lock. Im just saying the home made cover lid thing looks like itd trap more rising heat off the header than it would keep heat out. the factory fix for vapor lock is a heat shield that goes underneath the fuel rail and injectors. if you want a good home made heat shield you wanna put a sheet of metal between the header and intake manifold, theres no heat source that would require a heat shield on top of the intake manifold, that one is basically trapping the heat rising from the exhaust manifold right on top of the injectors and fuel rail.

@@Tanner731 all good I just took it different. I wasnt trying to sound mean or anything else just wanted to make a point about those shields. im not a know it all as i have so much to learn about jeeps even though I have been a jeepster for more than 40 years Im still learning about them and these last few years it is like they change things quicker than they change there underwear also you are right it does look like it .but so many people take them off and wonder why things happen. I apologize!

@@c.m.229 the lid thing hes got going over the fuel rail/injectors isnt stock but he has the stock heat shield in place. Im betting that the home made lid is too hot to touch after driving. the factory heat shield is plenty, if you wanna go overkill DEI makes a really nice looking heat wrap kit for the 4.0 that covers the fuel rail and injectors. my 4.0 has no heat shields and the worst vapor lock it gets is for 2-3 seconds right after restarting while hot on a very hot day and goes away as soon as you blip the gas. thats one advantage to the return style fuel system

Haven't had an issue yet

I sold the jeep 4 years ago, so I don't know. But they were still good when I sold it.

It takes a few drives for the ecu to learn the new injectors and by resetting it you are making the process start over again. It will run off the factory presets at first till it relearns the new injectors.

you have a bad one possibly. new doesnt always mean good when it comes the china parts especially injectors. i knw this was 5 months ago but what did you do to resolve the issue?

I got that too, with code P0172 system too rich bank 1. Probably bad injector. I got new injectors from Ksuspension and after installing them everything was fien.

After 5-6 or so trips, it got better as I continued to drive it.

About the same

There has been many studies and opinions on this subject. Bottom line is it won't break down the rubber but it can swell the rubber. For it to swell the rubber it needs to be submerged in WD40 for years on end for that to happen. Using it for a quick spray to install in this video will not affect the rubber. Also from the heat cycles of the engine any residual WD40 most likely has evaporated if there was any left on the O-rings.

Petroleum jelly is petroleum as where gasoline comes from. don't think it'll harm O-rings. WD-40 is a lubricating solvent.

Nope, haven't had any issues

@@OutJeeping 👍

It was a engineering project I was working on at the time. I have it all explained in this video kzfaq.info/get/bejne/isqCnNKZvNDKeXU.html

For some reason it runs choppy on cold starts as if the motor is cammed, don't know why its doing that but other than that it runs fine.

My Jeep did the same exact thing mine is a 95 on a cold start it does exactly what you say but then after it warms up it's fine and smooth but I am burning quite a bit of gas I'm getting 11 to 12 miles a gallon but I have a lot of miles with a lift the gas mileage fluctuates but the injectors were cheap so I'm wondering if they are malfunctioning or not and I'm thinking about going with the four hole

It seemed after about 10 drives it seem to start to learn the new injectors and smoothen out

@@OutJeeping yeah I heard it takes a while. Thanks for the heads up.. You notice anything performance wise? Economy wise?

You shouldnt need to reflash the ecu. They are the same pound injectors and the ecu will relearn the new injectors to be able to run efficiently. All that has really changed with the new injectors is fuel spray pattern.

Around the same

@@OutJeeping I would not expect any real difference if you have a lift kit, mud tires, and wider tires

@@Taydrum It doesn't matter what you've done to the jeep, it's just going to be better throttle response and smoother running either way. These dont add any more fuel then the stock injectors so therefore the same power.

@@OutJeeping Ah I didn't realize they add the same amount of fuel.

Stock injectors are 19lb the 12 hole ones are 24lb

Work just fine, smooth running and better throttle response

Just normal 89 unless its Thursday at my local station, which 89 is the same price as 87. But there's no reason to change the octane, compression remains the same.

I didn't notice in increase in mpg but have noticed an overall smoother running engine with increase throttle response.

It has in increase in throttle response and atomizes the fuel better which helps for smoother running.

That is not true for these 4.0 engines. The injectors are on the intake manifold so fuel has time to mix with the air before it is entered into the cylinder.

I explain it all in this video: kzfaq.info/get/bejne/isqCnNKZvNDKeXU.html

Thanks!

Not really but I knew that going into it

Yup the ecu will learn the new injectors after resetting the computer like shown by disconnecting the battery. The only other ignition coil system that's better than stock would be the Viper Coil mod offered by K Suspension.

Seem to be working great no problems yet

I did not, but after a couple of years I can say they are still working flawlessly.

@@OutJeeping Glad to hear it! I was considering doing this to my 92, but after yours ran and idled funny I wasn't sure if I would do it. Now it's on the to-do list haha

Haven't had any issues with them yet, no change really in mpg because they are still delivering the same amount of fuel as a single hole injector. But it is a smoother running engine forsure.

Are you saying its leaking on the exhaust header or intake manifold where the injector goes into? It could possibly be a faulty stuck open injector.

All I can say is they are doing well with no complaints so far and throttle response has improved over stock.

I did not unfortunately, but they were working well after 2 years.

@@OutJeeping did you see an improvement in gas mileage?

I would definitely look over the fuel injectors and the whole ignition system and replace any worn out components.

Thermal switch that kicks on around 135 degrees I believe.

240cc Flow Rate

That would be a visor, they are pretty rare for Cherokees

A couple drives seemed to clear it up.

👌 mine ended up being an injector not firing lol

@@the.murrball I have heard from a couple people that a bad injector could have been sent out but K suspension will replace it under lifetime warranty.

@@OutJeeping yeah i picked em up from another source, lucked out and had a spares to swap in

How long have you had them installed for? It takes some time for the computer to relearn the new injectors.

Yes, your harness would be for the older injectors so you would need the pigtail adapters.

Flowmaster super 44 no cat.

Flowmaster Super 44

@@OutJeeping Thanks for letting me know that...

Found out its normal, due to fact that since cannot use the retainer clips that's why...guess if the old ones did not have the clip they would do the same.

@@recountry Yup I dont think I was able to reuse the clips on mine either.

@@OutJeeping I watched many clips on installing them and knew about not using the clips but no one mentioned the movement. I sent the company a email and here is what they said " Units move around due the slot for the clips on the injectors being at a different height than the original units. Meaning the injectors can't be locked into the rail like the originals. That's not an issue as long the injectors create a "seal" at the intake so there are no vacuum leaks. Also once the rail is bolted down the injectors have no way of popping out from the rail itself. The fuel pressure alone will always keep the injectors pressed in against the intake ports" Thanks for the reply OutJeeping!

I never had an issue with them till I sold the Jeep last summer. I plan to run them on my current Jeep as well.

I got mine off of Ebay, I forget the sellers name but they are stencil style decals.

steven padilla The 4 holes are just fine but the 12 hole atomises a bit better and usually they’re 24/lbs an hour vs the stock 19/lbs

Nothing noticeable its mostly for smoother running and throttle response.

They are for the 99-01 Cherokee XJ's

Yup they smooth out after a few drives and still running them after after a couple years of them installed.

@@OutJeeping Awesome. I have the original 1 hole. LJ 112,000 miles. I have seen some saying that the 12 hole is running too rich of AFR. I'm up in the air on just going 4 hole or 12. Thoughts?

Did they help with heat soak? I’ve got an 04 WJ and I’ve done hood vents and the E- Fan with a timer set for 5 minutes after running and I’m still getting a heat soak.

Link seems to be working fine to their website, under their products tab you can find injectors that fit to your application.

Flowmaster Super 44

I do not

Usually the computer will learn the new injectors after a couple days of driving, are you sure you didn't create a vacuum leak when installing them?

OutJeeping not sure I’ll have to look into that thank you

Replace the three sensors, on the throttle body. At least one is possibly “failing”. If you want to, try cleaning them after a special soak. KZfaq has videos on this.

Come to think of it, does the fuel pump cut on when there's a lack of pressure in the fuel rail like on some newer vehicles? He didn't mention if he disconnected the battery or not

Only when the key is turned it will prime before cranking, and then run continuously when the engine is running.

Nothing noticeable, but better throttle response.

Yes, you may need to get the wire harness adapters though.

Juan Luis Nope, it doesn't change the amount of fuel going into the engine.

It should certainly, doesnt tamper with any of the exhaust.

Have you rest the ecu and driven it a few times?

@@OutJeeping yup did it all got 4 port ones and she ran fine

The heat shield/duct was a project I did back in high school as an alternative way to reduce vapor locking in the fuel rail. I have a bilge fan on a thermo switch that blows air through the fuel rail ducting to dissipate heat.

Flowmaster super 44 no cats

OutJeeping sorry , but from where did you but it ?

Just added captions.

OutJeeping thank you for adding caption will watch now that I can under stand what you'r saying 👍👍👍 C😎😎L

I used wd40 on the o-rings as lube not on the electrical connector

Check out the link in the description

Yeah same with me but finally got them last round. He sells out with a day or 2 with every batch. Also he has another batch coming in this week so check out his fb page for the notification.

Search eBay for jeep 12 hole injector upgrade

Just so you guys know eBay has the 12 hole Bosch reman for 80$ with free shipping

These are just stock 2007 Ford Focus 2.0 injectors. The Bosch number is 0280156161.

Hmm, not sure where you got that price from but on the K Suspension website they are $150 for 12 hole reman injectors.

@@OutJeeping you are correct sir I saw an incorrect figure. Thx. ......see KZfaq I was wrong and apologized and all is well....