1973 leaking fuel through charcoal canister

[Russ S.]

Re: 1973 leaking fuel through charcoal canister

Guys,
The fuel filler neck for C3s extends down into the tank about 1/2 to 3/4-inch. This allows for the "dome" of air Duke talks about -- unless one modifies the fuel filler neck. Don't believe me? Stick your finger under the edge of the filler neck and see how far up the inside of the tank you can get it. Don't let anyone see you doing this. In most communities you can get arrested for deviant behavior doing this.

I wouldn't be surprised the later C2s are constructed the same way, but then maybe not. I have no intimate knowledge of C2s.

Terry is exactly right. Non ECC cars have a filler neck that is one inch shorter than ECC cars thus allowing an inch more air space on the ECC cars.

[Russ S.]

Re: 1973 leaking fuel through charcoal canister

i always had problems with the separator since new. If I filled that tank and parked on a hill with the back end up, fuel will come out of the canister. The fix was not parking on a hill. I never went to the dealer for this but maybe I should have.

I replaced my old original with a new one during restoration so I will see if that fixes it but I suspect not. Both new and old rattled like there is a ball check valve inside. I never took one apart but I suspect that the design of this is poor.

steve L
73 coupe since new

My car leaks the gas out on the level even after driving about ten miles. Those ten miles would have used nearly a gallon of gas.