Engine Starts; Idles Rough and Erratic
- Vacuum leak.
- Incorrect idle RPM.
- Damaged idle adjust screw.
- Clogged slow jet.
- Incorrect fast idle cam index setting.
- Leaking carburetor seals.
- Incorrect fuel/float level.
- Blocked idling air and/or by-pass holes.
- Faulty anti-dieseling solenoid valve.
- Worn throttle shafts.
- Stuck anti-stall dashpot.