EVAP canister

EVAP canister

Postby baily144 [OP] » November 23rd 2020, 8:24pm

HI

Ok ...2003 astro RWD there's a strong raw fuel smell ....but no leaks. i looked on top of the tank and all around everything is good.

with the engine running it seems to be around the canister at the top of the tank... I understand that gas may enter the canister ... but there's no check engine codes and EVAP monitor has ran and passed.

That canister is expensive ....could gas enter the canister but not throw a check engine EVAP code?

Alex
Original Poster [OP]
baily144
Firing on 1 Cylinder (L1)
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Re: EVAP canister

Postby Traveller » December 18th 2020, 10:04pm

Hey, Alex,
I suspect I have a similar problem, but my 'symptoms' are exactly opposite: no smell, but Check Engine light came on after I topped off the gas tank to the brim of the gas cap. Don't see how I can even remove the EVAP canister from its place. Have you been able to do that? If yes, can you tell me how you've done it? Thanks and sorry for not being able to help you :(
Traveller
Fueling (Empty tank)
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Van Model Year: 2003
Van Make/Model: Chevrolet Astro
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Re: EVAP canister

Postby baily144 [OP] » December 19th 2020, 5:22pm

Hi

Yes you can't get the canistor off without dropping the tank, but what did was carefully Disconnect the plastic tubes and very gently blow air through the lines and canistor.... Evap then ran and set a ready or pass.

You may be able to disconnect the lines and allow them to drain and dry out.

But one thing.... Never ever totally fill the tank.... That's what caused your issue... It was to full and gas flowed into the canistor lines... Fill to the first click.. Then round it out to closest dollar. Learned the lesson the hard way.... When it clicks off its full don't over fill it.

Alex
Original Poster [OP]
baily144
Firing on 1 Cylinder (L1)
Firing on 1 Cylinder (L1)
Years of Membership: baily144 has been a member for 7 full yearsbaily144 has been a member for 7 full yearsbaily144 has been a member for 7 full yearsbaily144 has been a member for 7 full yearsbaily144 has been a member for 7 full yearsbaily144 has been a member for 7 full yearsbaily144 has been a member for 7 full years
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Re: EVAP canister

Postby Traveller » December 19th 2020, 5:48pm

Thanks Alex,
I know now :( Interestingly, I have been filling up to the brim all of my cars, e.g. my current one - 2011 Toyota Highlander since day 1 and have never had a problem. I bought this Astro last week and that the first fill up I did; it took 16 L after the first click (same as my VW Multivan D), and 5 km later - CEL on. Lesson learned :) Cheers,
Ned
Traveller
Fueling (Empty tank)
Fueling (Empty tank)
Posts: 3
Joined: December 2020
Alias (AKA):
Van Model Year: 2003
Van Make/Model: Chevrolet Astro
Extra Info: LT 4.3L V6 RWD

Re: EVAP canister

Postby baily144 [OP] » December 19th 2020, 5:55pm

Yes... Gm can be odd that way... I have a trailblazer that if you try to go above the first click it blows all over the place.

But... When your under your astro... Lookat the angle of the fill tube.. It's almost straight into the tank... If you overfill it goes into places it shouldn't

Regards Alex
Original Poster [OP]
baily144
Firing on 1 Cylinder (L1)
Firing on 1 Cylinder (L1)
Years of Membership: baily144 has been a member for 7 full yearsbaily144 has been a member for 7 full yearsbaily144 has been a member for 7 full yearsbaily144 has been a member for 7 full yearsbaily144 has been a member for 7 full yearsbaily144 has been a member for 7 full yearsbaily144 has been a member for 7 full years
Posts: 136
Topics: 33
Joined: September 2013
Gender: Male
Alias (AKA): Alex
Van Model Year: 2003
Van Make/Model: Chevrolet Astro


 
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