tkelley72
Well-known member
- Joined
- Feb 1, 2013
- Messages
- 95
- Reaction score
- 25
- Location
- United States
- My Car
- 72 mustang convertible
After having carb, issues for months, I finally got it rebuilt and installed. It's a Holley 600 . I have both float bowls set to the bottom of the threads at the sight screw, set the air and fuel mixture with a vacuum gage to the highest vacuum. (about 19.) If I try to lean it out the idle quality goes away and it stumbles and tries to die. It may be a little on the rich side based on the smell. The drivability is good but now I have valve clatter when accelerating. What adjustments can I make to resolve this issue. Never had this problem prior to the carb. rebuild. There are a few items of note I need to put out there for your consideration. First, the car sat for several months and had about 5 gal. of gas in the tank from last year. It did have Sta-Bil in it and I added about 5 gal. of fresh fuel to it. I haven't checked the plugs yet but I suspect they need to be replaced since the carb. had been in such bad shape and sort of dumping fuel. I can smell gas in the oil so I know it needs to be changed. I probably have the worst of all situations going on here but is there a step by step process I should take? Is it a timing issue, air/fuel mixture issue, plug issue, bad gas issue or all of the above? I didn't want to move forward with oil and plugs only to foul them up before resolving the prime issue/issues. Thanks for your help guys!