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11-28-2005 #1Registered User
- Join Date
- Oct 2005
- Posts
- 4
All of a sudden runs like it's missing
Fresh built Pontiac 350 less than 2 months and 200 miles on engine. Ran beautifully up until yesterday. Went to start it and it runs like its only running on 6 or 7 cyl's. When I give it gas i have to do it very slowly and when I do get the RPM's a little high it sounds rough. It wont stay running at idle. It has a Flame thrower HEI and a Holly carb with no choke. if it had a choke it starts like the choke is stuck open but i can eliminate that since there is no choke.I belive I do smell what seems like unburned gas. The car does not back fire while running. I checked the plug wire connection at the plug and the cap and the are good.the distributor is tight so i don't believe the timing has changed. My assumption is a bad plug wire (which are also new Accels). has anyone dealt with a problem like this before? Where and how would be the best way to check this problem.