EVAP system?
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TECH Junkie
Joined: Nov 2001
Posts: 3,987
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From: Melbourne, FL
EVAP system? Anybody ever disabled/removed it. I'm pretty much doing my fuel system from scratch, and some of the EVAP hoses are burned up/damaged. I thought about just making a regular vent for the fuel tank, and removing all of the EVAP components. Or, would it just be easier to fix the EVAP and put it back on the car?
Thread Starter
TECH Junkie
Joined: Nov 2001
Posts: 3,987
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From: Melbourne, FL
Re: EVAP system? [quote]Originally posted by John B:
<strong>I don't have EVAP on my LS1. I just connected my tank vent line to the EVAP solenoid and it seems to work fine.</strong><hr></blockquote>
So you're going all the way from the tank up to the EVAP solenoid on the intake manifold? I'm trying to avoid having to replace any lines, or fab up new ones, of they aren't needed. I'm trying to figure out someway to just vent the tank right now, and remove the charcoal canister, lines, EVAP purge solenoid, etc...
Thanks, though. I may have to try that out if all else fails.
<strong>I don't have EVAP on my LS1. I just connected my tank vent line to the EVAP solenoid and it seems to work fine.</strong><hr></blockquote>
So you're going all the way from the tank up to the EVAP solenoid on the intake manifold? I'm trying to avoid having to replace any lines, or fab up new ones, of they aren't needed. I'm trying to figure out someway to just vent the tank right now, and remove the charcoal canister, lines, EVAP purge solenoid, etc...
Thanks, though. I may have to try that out if all else fails.
Re: EVAP system? I've removed it before, no need for it with your setup. The only problem with the gas tank vent is that you'll smell gas vapor sometimes after leaving the car in the sun for awhile.
Re: EVAP system? [quote]Originally posted by GeorgeC:whats the purpose of it anyways?
<strong>Anybody ever disabled/removed it. I'm pretty much doing my fuel system from scratch, and some of the EVAP hoses are burned up/damaged. I thought about just making a regular vent for the fuel tank, and removing all of the EVAP components. Or, would it just be easier to fix the EVAP and put it back on the car?</strong><hr></blockquote>
<strong>Anybody ever disabled/removed it. I'm pretty much doing my fuel system from scratch, and some of the EVAP hoses are burned up/damaged. I thought about just making a regular vent for the fuel tank, and removing all of the EVAP components. Or, would it just be easier to fix the EVAP and put it back on the car?</strong><hr></blockquote>
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Thread Starter
TECH Junkie
Joined: Nov 2001
Posts: 3,987
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From: Melbourne, FL
Re: EVAP system? [quote]Originally posted by Terry Burger:
<strong>I've removed it before, no need for it with your setup. The only problem with the gas tank vent is that you'll smell gas vapor sometimes after leaving the car in the sun for awhile.</strong><hr></blockquote>
Thanks Terry, that's kind of what I was thinking... I'll probably just take it off instead of trying to fix it.
<strong>I've removed it before, no need for it with your setup. The only problem with the gas tank vent is that you'll smell gas vapor sometimes after leaving the car in the sun for awhile.</strong><hr></blockquote>
Thanks Terry, that's kind of what I was thinking... I'll probably just take it off instead of trying to fix it.
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Verdad Gallardo Re: EVAP system? GeorgeC, you can remove the cannister and associated lines. My brother had a '72 Chevelle SS where he did this and blocked the line at the tank. It would just build up pressure at times and just let off a big hiss at times when openning the gas cap. No biggie though.
TECH Resident
Joined: Nov 2001
Posts: 929
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From: NC
Re: EVAP system? You can drill a small hole in the gas cap to keep the pressure down but like Terry said above, be ready to smell gas fumes which if you get use to may allow you to overlook a gas leak in the future as just fumes your use to smelling. Leaks can lead to fires and your back to where you started.
Thread Starter
TECH Junkie
Joined: Nov 2001
Posts: 3,987
Likes: 0
From: Melbourne, FL
Re: EVAP system? Well, I've discovered that the original pipe for the vent/EVAP hose itself has a check valve in it (which is actually inside the tank). It won't allow any pressure into it, but will allow pressure to vent out. There's also a "float" of some sort in the check valve, which would prevent any actual gasoline from coming out of the tube (the float blocks the output in the event of fuel tank being full, or fuel splashing on it). I'll probably just attach a coiled up section of aluminum tubing (ala fuel cell style), or run a rubber or braided line from that tube to the charcoal canister. The rest of the hoses and the purge solenoid itself will just be left off the car. The charcoal canister should reduce the smell from the fumes by a good bit.
