The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 06-05-2013, 04:36 PM   #1
chockblockjed
Registered User
 
chockblockjed's Avatar
 
Join Date: Jun 2009
Location: Escondido, CA
Posts: 25
1981 C10 evap canister

I have gas coming out of the evap hose that runs to the decel valve. Is this a bad decel valve or is it coming through the decel valve from the pcv. The fuel is actually leaking out of the canister so I will be replacing that but want to make sure I solve the excess fuel problem before I saturate the new charcoal. I hate the smog time of year!
Thanks
Posted via Mobile Device
__________________
1981 C10 SWB 350 (in progress) 3 on the Tree "Old Bess"
1996 K3500 Crew Cab 454 4L80E "Family Camper"
2002 GMC 1500 Yukon XL 4WD "Wife's Ride"
chockblockjed is offline   Reply With Quote
Old 06-05-2013, 06:02 PM   #2
wraprail
Registered User
 
wraprail's Avatar
 
Join Date: Sep 2010
Location: Lake Havasu City Arizona
Posts: 863
Re: 1981 C10 evap canister

Wow I never heard of that. You should not have any raw/liquid fuel in the canister or the line running to it from the tank.
Have you replaced any of the hoses near the tank recently?
Maybe they got the vent and canister lines crossed. (I don't know if even this would cause your problem)
I just can't see how fuel could be sucked into the canister.
Should only be vapor.

Sorry I can't be of any help. I am curious as to the cause.

If you were from Okelaoma I might have an answer......
But I see you are from Cali Smog Pump Land..
__________________
wraprail is offline   Reply With Quote
Old 06-05-2013, 11:32 PM   #3
chockblockjed
Registered User
 
chockblockjed's Avatar
 
Join Date: Jun 2009
Location: Escondido, CA
Posts: 25
Re: 1981 C10 evap canister

Thanks
I'm as stumped as well. Going to replace canister and decel valve and see what happens. I swapped to the 350 from six a cuople years ago and psssed smog no problem
Posted via Mobile Device
__________________
1981 C10 SWB 350 (in progress) 3 on the Tree "Old Bess"
1996 K3500 Crew Cab 454 4L80E "Family Camper"
2002 GMC 1500 Yukon XL 4WD "Wife's Ride"
chockblockjed is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 06:06 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com