Az ken
Ken, thanks for the suggestions. Normally, the truck has been driven every couple of days for years. Never had this particular problem before here in Tucson, AZ. First noticed it after gassing up in Casa Grande while on a trip to Yuma this past Labor Day. No problem on the way back to Tucson, but we left Yuma at 4 AM to avoid the heat. I will try a different gas cap or try driving with the old one loose. Likewise, 'will adjust the carb, which was rebuilt, by the way, three years ago. I have two gas filters. One is the standard filter inside a canister under the vehicle on the passenger side (replaced yesterday). The second is a VW Bug type clear plastic affair (new) between the fuel pump and the carb. Fuel lines all mounted correctly. Metal fuel line near exhaust manifold is lined with aluminum/asbestos tape at closest point (roughly 3 inches).
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