Troth

XJ 2000, I6, 4.0.
For the past 2 months, I have noticed a film of water/oil/coolant/fuel? on the tail gate. So today I threw an error code for an injector #3 OPEN. I'm wondering if this is dirty fuel being expelled from the exhaust system.


Oil, coolant, and ATF? seem to be just fine. I know mu transfer case has a leak... but shouldn't be bad.


I have noticed a reverberation in the vibration of the engine lately. feels like the tires are out of balance. I had them rebalanced. I saw on another post that once a Cherokee owner swaped injectors, he said "that vibration, that I thought was my tires, went away."


could it be that one of my fuel injectors is stuck nearly open... depositing 1/2 burned gas on my tailgate? It is a pretty even pattern that you would expect from the eddy of wind draft.


looking/smelling/tasting does not reveal the liquid.


I just ordered 6 BOSCH 4 hole injectors

Troth

and it does make sense that if 1,2,or 3 injectors are off.... the jeep RPMs would struggle against eachother. You would want consistency with very cylinder... not just one or two performing better or worse????


I miss my 92'

Bustedback

I would look for an actual fluid leak, it's not the injectors causing the film on the back glass.

may pop

That is a common result of an oil or fluid leak. Time to crawl under and see whats leakin.

Ron

Troth

Thanks for the input. I feel that it is coming from the tail pipe, not just dripping from the undercarriage. It's so even, that it seems atomized from the exhaust. I tread a thread of a guy who had an injector stick ipen, and it was heavily dripping gas out the exhaust

Turbo X_J

Little chance of raw fuel making it through the cataclysmic converter, if it were even close to that rich your eyes would burn from the fumes. BTW a fault code indicates a problem in a circuit not necessarily a component. My vote is for oil.

Troth

Any ideas Turbo? It swipes black on my finger tip, so.... It could be abything

Turbo X_J

Is it inside of the exhaust pipe as well?

Troth

Not sure, it's the only system/liquid I can not account for. I really don't think undercarriage fluid leakage would deposit itself so evenly across the whole back hatch. I really feel my fuel injectors have issues. I think a vapor expelled from the tail pipe would cause the even splatter. My gut says it's minor gas

DFlintstone

X2^. The tailpipe should give away the story.

Btw, when my vent tube from the VC to the air cleaner was blocked, it pissed so bad out the RM seal from Crankcase pressure, it would "oil" the front of my trailer. Pullen hills on the highway.

Troth

Pardon my ignorance, can you define VC, RM for me? Your solution?

I can do a lot of work myself, but I'm not a mechanic. Fuel systems are not my forte

Bustedback

VC= valve cover. It's not fuel that is all over the back glass, you have either an oil leak, transmission leak, transfercase leak, or a coolant leak that is blowing back. Again, it's not fuel, it's something other than fuel. If you had a fuel leak you would have a strong smell of fuel

DFlintstone

Yea, valve cover. "RM"= Rear Main. If you are climbing a hill with a load, and that vent can't vent freely, crank case pressure will make it pis oil out the rear main seal like a big dog. If your vent is stock, (not an aftermarket filter, or a kinked tube), that senario is alot less likely.

Troth

I see. So what's the fix?

Bustedback

In your case? Take it to a shop and have them check it out. You seem like you will over think what the problem is and stray way far away from the actual cause.