JGrimm
I noticed a "gassy" smell after turning off my truck and found that about 30 seconds after shutting it off gas starts dripping off the carburator throttle linkage onto the intake manifold. It doesn't drip fast just a couple of drops a minute for a couple of minutes. There doesn't seem to be any dripping while the engine is running just after shutting it off. So... I'm wondering where the gas is coming from. Is there enough left on the carb walls after turning off the engine to seep through a worn throttle shaft opening. I tried wiggling the throttle shaft and it didn't seem to have any play. Could the float level be off causing an overflow after shutting off the engine? Also what are the chances that a rebuild will fix the problem or should I just replace the carb?
Friar
Could you provide some more info on the year of the vehicle and type carb if known. Worn throttle shafts would interfere (contribute to) irregular carb performance, even at idle. This could be the float needle not seating enough and the carb weeps when the engine is off yet there is still pressure in the fuel line. This also could be float level adjustment. You don't notice it while the engine is running as the engine vibration keeps the needle seating. Yes a carb rebuild should resolve this weeping. Don't let this continue. Many a fire has occurred over fuel issues. Again knowing what vehicle/carb would help a lot.
JGrimm
My truck is a 1958 chevy 1/2 ton Apache with a 283 v8 with a Rochester two barrel carb, model no. 7012133.B

Thanks

Friar
My first suggestion is to check the fuel connections. It is possible that fuel could weep from either a threaded or clamped connection and travel down the carb body. It might give the illusion its coming out of the linkage. After that check the float level and especially the needle and seat. This carb should be rebuild able. If you don't feel comfortable doing it your self, then send it out to someone who knows a Rochester. Check references when selecting a vendor.

Add a Website Forum to your website.