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Old 06-03-2026, 05:49 PM
Goatracer1 Goatracer1 is offline
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Join Date: Oct 2003
Location: NH
Posts: 4,265
Default Cure for a nagging problem

Maybe this will help someone else. I have had 2 problems with a stock 389 in a 1962 Bonneville for the 3 years that I have owned the car. When the engine is dead cold and hasn't been started in a while it loads up when first started. Also it is hard to start when hot. It cranks over fine but you have to crank it over and clean it out before it will fire. I removed the Edelbrock carb that was on it to cure linkage, fuel line, vacuum line and air cleaner fitment issues. I thought changing it back to an AFB might cure the drivability issues. NO. I made sure the float level was good and the choke vacuum pull off was OK. Later I took the AFB off my 1964 GP. Bonneville carb worked fine on the GP but Bonneville still had same problems. Over the winter I decided that I would try one of the TRI-Powers that I had on the Bonneville. No better. That's 3 4bbls and the 3-2's also another fuel pump with no change. I decided "what do I have to lose"? I ran a return line back to the gas tank. (It already had the correct sending unit). Then added a GF-98 fuel filter with the return fitting. The car has never ran so good. Idle in park went from 750 rpm to 1100! This cured my problem for $30-$40. Maybe it will also improve my gas mileage. Also maybe this will help someone else.
PS There is a guy on ebay with a close out on the GF-98 fuel filters for about $17

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