Vapor Canister Question
 

1994 C1500 5.7L AT. Noticed a rat chewed the purge fitting off the vapor canister. Anyone know if the top can be replaced on this, or any way to repair it?

Re: Vapor Canister Question
 

I’ve never seen just a top replacement. Maybe you can grind it so the fitting is straight up, versus 90 degrees, and then possibly clamp the hose to it.

Or pay like $80 for a new one.

Re: Vapor Canister Question
 

Yeah, I've seen the prices . . . damn. Guess it's time to bring out the Yankee ingenuity.

Re: Vapor Canister Question
 

These have to be a dime a dozen in the boneyard.

Re: Vapor Canister Question
 

what does that do anyway? do u need to replace that?

Re: Vapor Canister Question
 

It's required for emissions. It collects fuel vapors and then peridocally releases them into the injection system to get burned instead of having them evaporate in the atmosphere.

You could technically vent the tank to the air but you'll have a fuel smell and depending on where you live, won't pass emissions inspection.

Re: Vapor Canister Question
 

In my 94 I by passed it all together. Just connected the two lines together and whent stait to the tbi. Never had a issue. Only reason I did this was to fit the under hood tool box the 95 ups got.

Re: Vapor Canister Question
 

canister ever need replaced though? does it improve performance?

Re: Vapor Canister Question
 

It stores fuel vapor to be burned later, so to really sell it you need to mention that it increases your fuel mileage a tiny bit.