Intermittant Gas Dripping from under Engine

[prossett]

Maybe you guys can help - after doing some work lifting one side up at a time, I notice a continuous drip of gas coming from somewhere around the right side of the engine, down onto the diff, when the engine was idling.

I set the truck down to check it out and the leak stops - couldn't find where it was from. Drive it a bit, keep checking, nothing. Dry as a bone.

So I guess it was some little quirk, who knows? The off-camber position... whatever. It's gone for about a week.

Today I park at work - there it is again! I get back home, it's gone!!!

I figure a leak is a leak: why does it come and go?

Anybody have this happen? Any idea what to look for?

 

[ryoken]

well, if its carbed, i might guess the hardline coming out of the frame is cracked, corroded or chafed thru... could be the rubber feed over to the pump, etc....

 

[darkshadow]

the pump id mounted on the lower front passenger side on carbed moters.

rubber lines run to it and a steel hard line runs to the carb.

check that first.

i just found on my friends truck that the PO had use a piece of rubber line to patch the steel line in his truck. no wonder it smelled like gas!

 

[79k20350]

how full of a tank did you have? this could have been gas coming out of the vent line for the tank. that would definetly cause an internitant problem

 

[prossett]

Solved - thanks guys. It was the end of the rubber hose that attaches under the fuel pump. End had cracked, so I cut off an inch and put it back on. Why it was intermittent, I have no idea - maybe when it heated up?

Anyways, another victory for the home mechanic! If I had taken in to a local shop who knows what they would have done!!