Aces High Bulletin Board

General Forums => The O' Club => Topic started by: CAP1 on March 04, 2011, 09:48:54 PM

Title: p0456
Post by: CAP1 on March 04, 2011, 09:48:54 PM
i have a chrysler town and country with the code P0456. it's a small EVAP leak(.020 or smaller).

 how do i find the leak? there's no spiders in the vent tube.
Title: Re: p0456
Post by: F22RaptorDude on March 04, 2011, 10:03:43 PM
 :rofl bout the spiders, but my 15 year old mind is constricted, so i know nothing about car mechanics. Or I know basics  :D
Title: Re: p0456
Post by: Buzzard7 on March 04, 2011, 10:27:04 PM
Fuel cap got a good seal?
Title: Re: p0456
Post by: gpwurzel on March 04, 2011, 11:06:01 PM
Put 1 cup of gasoline in there Cap, seal and leave for 5 mins. After 5 mins, drop in a lighted match, slam lid back down, and watch for where the flame comes out. That'll be ya leak (caution, you may have a bit more to fix after this)
 :D :D :D

And yes, I know squat about cars  :lol

Wurzel (film this if you do it, I need a laugh!!)

Title: Re: p0456
Post by: CAP1 on March 05, 2011, 07:32:53 AM
Put 1 cup of gasoline in there Cap, seal and leave for 5 mins. After 5 mins, drop in a lighted match, slam lid back down, and watch for where the flame comes out. That'll be ya leak (caution, you may have a bit more to fix after this)
 :D :D :D

And yes, I know squat about cars  :lol

Wurzel (film this if you do it, I need a laugh!!)



good idea!!! that'd work kinda like a guy i used to know......when he had a short circuit in a car, he'd put a wire across the fuse terminals, and look for the smoke......... :noid :devil
Title: Re: p0456
Post by: RTR on March 05, 2011, 07:51:18 AM
good idea!!! that'd work kinda like a guy i used to know......when he had a short circuit in a car, he'd put a wire across the fuse terminals, and look for the smoke......... :noid :devil

I guess that would work, but it's really hard to put the smoke back in once you let it out. :D

RTR

Title: Re: p0456
Post by: Shuffler on March 05, 2011, 08:43:52 AM
Figure out a way to pressurize it and then run a flame around it. Watch for flicker.
Title: Re: p0456
Post by: gyrene81 on March 05, 2011, 09:15:57 AM
i had that problem on my neon (before i got rid of it)...the shop i took it too had someting that made a smoky looking vapor appear where the leaks were...had a bad line and canister.
Title: Re: p0456
Post by: smoe on March 05, 2011, 11:07:46 AM
Did you top off the tank recently?

Cars with fuel injection have the fuel pump in the gas tank. The gasket around the metal cover that is holds the fuel pump may have ruptured. This happens when fuel tanks are topped off. Seems a lot of pressure builds up and causes a leak in the fuel pump gasket.

But probably best to check to make sure the gas cap is on right.
Title: Re: p0456
Post by: CAP1 on March 07, 2011, 12:04:21 PM
Did you top off the tank recently?

Cars with fuel injection have the fuel pump in the gas tank. The gasket around the metal cover that is holds the fuel pump may have ruptured. This happens when fuel tanks are topped off. Seems a lot of pressure builds up and causes a leak in the fuel pump gasket.

But probably best to check to make sure the gas cap is on right.

found the problem.

 this lady had this vehicle to another shop sometime in the past for an EVAP problem. for whatever reason, they had unscrewed the schrader valve in the EVAP test port.
 when they reinstalled the valve, they never fully tightened it, allowing vapors to leak out of this test port.


 
Title: Re: p0456
Post by: dedalos on March 07, 2011, 12:08:51 PM
i have a chrysler town and country with the code P0456. it's a small EVAP leak(.020 or smaller).

 how do i find the leak? there's no spiders in the vent tube.

Submerge the car in a pool and look for the bubbles  :old:
Title: Re: p0456
Post by: Dragon on March 07, 2011, 12:22:45 PM
Submerge the car in a pool and look for the bubbles  :old:


Bwaaahaaahaaaa
Title: Re: p0456
Post by: CAP1 on March 07, 2011, 12:33:12 PM
Submerge the car in a pool and look for the bubbles  :old:

 :rofl :aok
Title: Re: p0456
Post by: Shuffler on March 07, 2011, 01:03:35 PM
You could also check the schrader ummm oh never mind. :D
Title: Re: p0456
Post by: CAP1 on March 07, 2011, 02:32:29 PM
well, the thing is i almost missed it. i had my smoke machine hooked up to the test port, to try and find the leak. the system held tight for 25 minutes, so i went back and re-checked all the solenoids and vcv's. and the connections.
 the air in the fuel tank confused me a little, since we all know there is no air in the fuel tank too.........

 i really don't know what made me look at the schrader.......'cept for one thing.


 i must be AWESOME/

 :devil
Title: Re: p0456
Post by: fuzeman on March 07, 2011, 02:36:50 PM
Next time my 94 Voyager needs work I'll be asking you.
Presently trying to figure out the correct order of parts on the two Exhaust Manifold spring kits I have to install.
Title: Re: p0456
Post by: Rino on March 07, 2011, 02:37:04 PM
     I thought cars were supposed to stop running when their fuel tanks fill with air??  :D
Title: Re: p0456
Post by: CAP1 on March 07, 2011, 02:41:55 PM
Next time my 94 Voyager needs work I'll be asking you.
Presently trying to figure out the correct order of parts on the two Exhaust Manifold spring kits I have to install.

i was only being sarcastic with the "w\awesiome" part....but i am more than happy to offer advice to pretty much anyone here when i can. if i don';t know, i either keep quiet, ask someone who does, or just simply let yas know i don't know.  :aok

 it's kinda fun, 'cause it makes me think about stuff i may have forgotten...like the evap stuff.
Title: Re: p0456
Post by: CAP1 on March 07, 2011, 02:43:00 PM
     I thought cars were supposed to stop running when their fuel tanks fill with air??  :D

maybe?

http://www.youtube.com/watch?v=wtsAm3t2HDA

maybe not?   :devil