Have a 1989 Jeep Comanche starts up and runs serges up and down like a vcuum leak somewhere where would you look for one?

Answer 1

old mechanics trick is to spray carb/ throttle body cleaner around various parts of engine and see if it makes the engine almost die out or does die out that will be a general area to check NOTE: use extreme caution when doing this because it can cause a fire or explosion if its sprayed too much on exhaust or other hot parts