Prestone
Member
I had rust in the fuel tank which clogged the fuel filter, etc, etc. After sealing the tank, I removed the carbs & cleaned all the rust from the float bowls. After re-installing them, it runs terrible. Idle goes from 3000 RPM down to 1500 & back up. When it idles down, it pops through the RH, rear carb & backfires big time out the exhaust. I have cleaned idle jets mutiple times & checked float levels which look good. I was thinking big time vacuum leak, but when I spray WD 40 around the intake manifolds, nothing changes. I guess I could be missing the actual leak when I spray it. I put my Carbtune on it & at about 1,500 (when it will stay there), the two RH cylinders are registering very low vacuum, barely on the scale. It has to be a leak, correct? With it being both cylinders, would almost have to be the V-boost interconnect? I just want to fix it as the riding weather in South Carolona is getting better by the day. Thanks for the help