Fuel return info
Fuel return info I just thought that I would throw a little info out there that might help some people. I was going to use the vent line that goes to the charcoal canister as my return since it is larger than the stock return on my car. I got it all hooked up and thought I would check for leaks. It turns out that the vent line on my 81 camaro has a check valve in the tank that does NOT let air back into the tank. So my pressure was at 90 psi no matter how the regulator was adjusted. I just had to switch a hose around in the back no big deal, but I thought I would save some one the time of making my mistake.
I removed the canister. I didnt want to run it, Speartech is going to program for not having one. I think that the 1/4" line would be big enough untill you run a really big fuel pump. I just figured that a larger one would work beter and the vent line was the easiest line to hook up where I have my fuel pressure regulator.
We've been over this before, but... I was considering eliminating the EVAP system as well...but, is there any other downfall to this, other than the smell of fuel vapors from the fuel tank breathing? Thanks, Gar
TECH Resident
Joined: Oct 2004
Posts: 800
Likes: 1
From: Simi VAlley,CA
If you eliminate the evap system you will need to provide a vent for the fuel tank, probably with a "roll-over" valve in it. It should be located somewhere so the fumes won't be pulled into the cars' interior.....my old hot rod is vented in the left fenderwell just above the fuel fill hose. If you don't vent it correctly you will have supply problems.
On The Tree
Joined: Sep 2004
Posts: 168
Likes: 1
From: Woodland Hills, Ca
Originally Posted by Oscar Will
If you eliminate the evap system you will need to provide a vent for the fuel tank, probably with a "roll-over" valve in it. It should be located somewhere so the fumes won't be pulled into the cars' interior.....my old hot rod is vented in the left fenderwell just above the fuel fill hose. If you don't vent it correctly you will have supply problems.
Nick
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Staging Lane
Joined: Nov 2004
Posts: 99
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From: Annapolis, MD
Originally Posted by StngKlr
Can you elaborate on this?
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the easiest solution to tank venting is to replace your "sealed", emissions friendly gas cap, with a older nonemissions style "vented" cap..
or you could drill the baffle thru on a cap,since they're designed the same, the vented ones just have holes in the baffle......
or you could drill the baffle thru on a cap,since they're designed the same, the vented ones just have holes in the baffle......
Hey...Great Idea! 
