Got a 5 hour trip comming up and my heep wasnt idiling well. 1990 4.2 stock carter no mods. So i pulled the venturi assembly to clean and replaced the spark plugs. After that the jeep has a heasitation or stutter right away at low rpm say under 2k. when driving if you have you foot into it its ok its just the first 2-3 seconds. So i have now replaced wires rotor and cap, reset idle and timing, and it still hesitates. i cant find any vaccumes i knocked off. Im heading out to pull the venturi and make sure the little ball is still in there.
Any ideas on what ive done?? or where to look. other thank the idle it was runninng well before
checked the ventrui and the ball was there and the gasket seemed ok. Forgot to add that it starts hard now as well, turns over 4-5 sec before it takes. Gonna go check the coil now see if it may have went bad.
Well i think you on to something with the timing, im not familiar with timing with vaccum guage, i did try advancing it a bit by eye and the stutter seems to be less. didnt find much on a search as to how to vaccum time, Anyone point me in the right directions.
REVISIT, Well a month has passed and i have been pretty much just living with it. Stutter is bad. Real bad untill it warms up. Got a rich smell to the exhaust. Leading me to the choke possibly. I have been all over with the timing and there is no getting rid of it with timing. Open to all advise. (on fixing this carb and not switching to a diff carb)
When you pulled the venturies did you do any other things? Maybe you left off something or plugged something. I had issues with my carter for about a year before I gave up and went MC.
If you are sold on keeping carter then break down and do a complete rebuild of it. Being meticulous about getting everthing back into the right place and making sure all the passages are clear.