Dealing with a 1988 Camaro TPI setup.

None of the EVAP stuff is on hand, and honestly, no intention of hooking it up. I could, just don't feel there are any benefits for the work it would take.

Anyway, I'm trying to figure out how best to vent the gas tank.

I would *prefer* to vent it up higher somewhere., you know, in case of the regional floods we get sometimes. (highly unlikely, but it DOES happen)

Right now I've just got a rubber hose on the tank line with a bolt in the end of it, but I don't really like that.

I thought previously that I could just put an older gas cap on, one that vented at a much lower tank pressure, but I've known a couple of people that have tried that, and still had problems. (pressure building up, leaking gas after vehicle is shut down, spewing gas when the cap is removed)

*Theoretically* though, shouldn't a properly working pre-EVAP gas tank cap solve any problems caused by "plugging" the sending unit EVAP fiitting?

 

Run a tube up to the top of the firewall, "J'd" over so it opens downward.

Now, since this really is non-3rd gen, I must do my duty...

 

In response to an appeal by the originator, I'll reopen and let some who've removed the charcoal canister report their experiences.

 

Im interested in seeing pictures as im going to be removing mine.

 

I just cut mine off at the canister, and then put a air filter from a gas-powered RC car on the end of the hose. Its got a foam element.

Works fine, and its easy to take out to clean it. Can get one at any good hobby shop for about $3 or so.

 

I'm kind of worried about condensation in the tank. Same reason it is recommended to keep the tank more towards full than empty all the time.

I obviously have no idea how well the foam might restrict incoming condensation, but not having seen what you are talking about, would you speculate that it would at least help a bit?

I was also thinking of using one of the axle or manual transmission breathers, the ones with the semi-loose fitting cap, but not sure how well those would "seal" either.

Perhaps I'm being a little too cautious, but I pulled a sender out of a tank not that long ago, and the inside of the tank, especially the "roof" and bottom of sender, was really rusty. Enough so that scale was forming.

Personally if there are gas caps available that will breathe with a slight restriction, I think that would be the easiest/cleanest way to accomplish this, but perhaps any way you do it, condensation will be an issue?