BACKGROUND: Newbie. First time jeep owner, purchased this week. '90 YJ. 6 cycl. 5 spd. Carb. 85k on the odo.
SYMPTOMS: Stalls at idle. Dies at stop signs. Can be driven if you stay on the gas pedal. Has a loud "banshee" squeal when the RPMS pick up, but I think this may be unrelated as the belts were recently changed.
ADDITIONAL FACTORS: Upset wife. Limited mechanical ability/knowledge. No garage; have to use auto-hobby shop, about $3.50 an hour (not a problem).
After doing some research I found the following article.
Fix idle and stalling problems on a jeep cj-7 or wrangler yj
I successfully completed this and was feeling good and, given my lack of experience, was feeling pretty victorious. Unfortunately it did not fix the problem, the jeep still won't idle, and I left the shop feeling defeated. It seemed like the engine was running a little better, but it still stalls.
I should add that the jeep is dirty. As in, greasy. The choke plate was pure black. The air filter was pure black. The "tray" that holds the air filter had oil/gunk in the bottom of it. I wiped the engine and found that its not actually black its silver.
I'm not sure where to go from here. Can anyone give me some ideas on how to troubleshoot this?
I've heard it could be a vacuum leak--how do I trouble shoot that?
For now, here's my plan. I know it probably wont help, but I'm going to change the oil tomorrow, throw on a quality filter. (how many quarts should I pick up?). Get a new air filter, and put some sea foam in the tank. I'd like to think that sea foam would take care of this, but I'm skeptical.
Also, a "flexy" hose that goes from the exhaust to the air cleaner fell off when I took the lid of the air cleaner off. It's rusted, and brittle, I could barely get it back on so I'll be picking up one of those with some new screw clamps.
Thank you in advance for the advice and sorry for the overload. I'm a man's man but I'm diving into some new territory here (mechanical work).
P.S. I have read zen and the art of motorcycle maintenance.