Quote:
Originally Posted by porsche930dude
what year? Is youre charcoal canister in good shape and the system all in place. Might be wize to open up the canister and see if there is anything left in it. The lines could be leaking in the tunnel that is fairly common
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I would pass on the canister inspection for the moment only because I don't have mine in the car and I smell no fumes. (1981 with the canister in the engine bay).
Given it's a sealed system and the "in" is the gas tank and the "out" is the air box. why not plug the gas tank "in" port with a nail and blow on the hose that feeds the airbox. See if pressure builds.
If not, disconnect hose under the car (drivers side, left of center, near where the tunnel ends.) Repeat test to isolate. Etc.
I have to think you can fiddle with it a bit to narrow down where the system is leaking. Front end is more suspect than rear.
Maybe the fender expansion tank is cracked?
I think the tunnel is a metal tube rather than a hose?
Edit: Looked at some of OP's other posts and he has a 73. I think the canister is in the front but not sure.