Ok I need some opinions on this one. The jeep starts up just fine and as long as I'm driving it does fine. The problem comes when I have to set and let it idle for an extended amount of time, say at a red light or a drive through. Depending how long I set there and idled when I take off the jeep acts like it is flooded. It will spit and stall and skip and go on. The longer I set there and idle the worse it is. Once I start driving it for a while it will clear up, as long as I don't stop again.
I just changed the O2 sensor and the problem didn't stop. My next thought is I might have a leaking fuel injector causing this. Would having the distributor off by one tooth cause this problem?
I don't think the IAC valve or a dirty throttle body would cause this issue. It doesn't happen at idle, just when I give it throttle. The longer the jeep sets at idle the worse it is. Feels like it is flooding like and old carb.
Macmqs great video! I added it to my bookmark list. I will definitely be referencing it on future post. Cleaning the TB and IAC is a routine maintenance and I recommend doing it every time you tune it up. Even if it isn't your issue it is a good thing to do. You could be loading up with fuel at idle. The first thing you need to do is check for any fault codes: http://www.jeepforum.com/forum/f12/h...codes-1257145/
Get the fuel pressure guage from the local parts store tool loan program. Check your fuel pressure: 31psi idle, 39 with the vacuum line for the regulator pulled, greater then 20 psi with the engine off for more then 20 minutes.
Other possibilities will require a multimeter to test. Post back the results for the fuel pressure and fault codes.
I have a fuel pressure gauge, I just need to get the right fitting for the jeep fuel rail. I just put a new Bosh pump in so I would think it would be doing fine, and looks to me that it has plenty of pressure.
I just ordered some Ford S3 EV1 plugs with the 4 hole set up. Didn't cost much so I will see if those solve my problem.
No one has answered my question of; If the distributor was off by one tooth would it cause an issue like this?
Do a pressure test. The fuel pressure test will tell if you have a leaky injector, bad check valve, pinched return line or low supply pressure. Do the test and see what you get. Too much fuel pressure will cause it to load up at idle. Bleed down preessure fail will tell you that you have a bad injector or check valve. Post what you get when you test it.
Too much fuel is what I think or a bad injector. The pressure test will tell you.
Ok now that makes more sense. lol
Yea that is what I am thinking also. I have a fuel pressure gauge, just need to find the right adapter for the jeep. I will no something on Saturday. I have to change my wives brakes so I will be with all my tools.
To much pressure would mean a bad regulator. If she has good pressure then that would point to a bad injector. I'm I right?
I always have the regulator off the engine I pulled out of the jeep so I could always swap them out for free.