Search



Go Back   Third Generation F-Body Message Boards > Tech Boards > TPI
Sign in using an external account
Register Forgot Password?

TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by South Bay Fuel Injectors
Click Here

Welcome to ThirdGen.org!
Welcome to ThirdGen.org.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!


Reply
 
Thread Tools Search this Thread
Old 02-15-2007, 12:37 AM   #1
Member
 
azcamaro's Avatar
 
Join Date: Apr 2003
Location: Phoenix, AZ
Posts: 357
Car: 1987 IROC-Z / 1992 Corvette
Engine: 305 TPI / LT1
Transmission: 700R4

Classifieds Rating: (1)

Vapor Canister is saturated with gas

My charcoal canister is getting saturated with gas. This started happening after I replaced the vacuum lines that were dry-rotted. I had the lines hooked up wrong, but replaced the canister & hooked the lines back up correctly & it is
still getting saturated. Then I replaced the canister again along with a brand new purge valve, gas cap & PCV; double then triple checked the vacuum lines, but it still is getting saturated with gas.
Is there anything else that would cause the charcoal canister to become saturated with gas?
BTW I did not over fill the gas tank.
__________________
Don't assume malice for what stupidity can explain.
azcamaro is offline vBGarage Page   Reply With Quote
Old 02-15-2007, 11:00 AM   #2
Moderator
 
Vader's Avatar
 
Join Date: Jan 2000
Posts: 17,840

Classifieds Rating: (0)

Is the purge solenoid valve operating? If you supply power to it directly, does it switch on? You can do this with the engine idling and will notice a distinct change in idle. That will indicate whether the system is functioning and if the vacuum lines are connected correctly.
Vader is offline vBGarage Page   Reply With Quote
Old 02-16-2007, 02:58 AM   #3
Member
 
azcamaro's Avatar
 
Join Date: Apr 2003
Location: Phoenix, AZ
Posts: 357
Car: 1987 IROC-Z / 1992 Corvette
Engine: 305 TPI / LT1
Transmission: 700R4

Classifieds Rating: (1)

Thanks for the reply Vader, I did just as you suggested & tested the solenoid. It's operating correctly..
I remembered that I started having this problem after I went thru emission testing & failed the pressure test. I went out a got a new gas cap, not realizing the a$$hole who sold me the car had put on a vented cap to hide the fact that the fuel return line & the vapor/purge lines are switched. (thanks to my friend who did a simple test with some kind of a pump) So when I put the non-vented cap on.....
Looks like I have a project ahead of me. I hope there is an easy way to do this, I've heard about droppin the rear end & gas tank method.
Thanks again Vader, I appreciate your help.

May the Great Karma God smile on Eli, seller of my new ride!!!
azcamaro is offline vBGarage Page   Reply With Quote
Old 02-16-2007, 07:02 AM   #4
Moderator
 
Vader's Avatar
 
Join Date: Jan 2000
Posts: 17,840

Classifieds Rating: (0)

With the vapor canister drawing from the return port, it's no wonder it slugs the evap canister with raw fuel. At least you've found it.

If the return and vapor lines are switched at the tank, there may be no need to remove the tank. Both lines should be rated for fuel, and you should be able to clean the hoses and read them to verify that. There should be no pressure on the return line that close to the tank, so the return line doesn't have to be rated for any significant pressure. It would be tempting to change the lines NEAR the tank and see how it works.

Then again, it might be good to make certain the hoses are clamped properly, and if the vapor hose being used is not fuel rated (for whatever reason) you would need to change it.
Vader is offline vBGarage Page   Reply With Quote
Old 02-16-2007, 01:07 PM   #5
Member
 
S105.7's Avatar
 
Join Date: Dec 2004
Location: Rhode Island
Posts: 210
Car: '87 S10 Blazer & '91 RS
Engine: L98 & L03
Transmission: 700R4 & T5
Axle/Gears: 10 Bolt/3.73/3.42

Classifieds Rating: (0)
hi guys, i am having a similar problem with my blazer. the canister smells of fuel, and i was getting terrible milage...like 11-13mpg. i was thinking the the diaphram in the FPR went south, but this seems like a more likely cause. i was 99% sure i had the lines right when i swapped pumps, but maybe not.

im getting a new tank and walbro255 in the spring so we will see. could the switched lines be causing the bad fuel economy? i thought these S10s were supposed to be good on gas with a V8, lol.
S105.7 is offline vBGarage Page   Reply With Quote
Old 02-16-2007, 01:07 PM
ThirdGen
1992 Camaro




Paid Advertisement


Reply

Go Back   Third Generation F-Body Message Boards > Tech Boards > TPI

Tags
91, camaro, canister, charcoal, check, corvette, fuel, gas, gen, problems, raw, s10, saturated, smells, vapor, vaport
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


1982 Camaro '82 || 1983 Camaro '83 || 1984 Camaro '84 || 1985 Camaro '85 || 1986 Camaro '86 || 1987 Camaro '87 || 1988 Camaro '88 || 1989 Camaro '89 || 1990 Camaro '90 || 1991 Camaro '91 || 1992 Camaro '92


All times are GMT -5. The time now is 04:11 AM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.5.2
All content copyright 1997 - 2014 ThirdGen.org. All rights reserved. No part of this website may be reproduced without the expressed, documented, and written consent of ThirdGen.org's Administrators.

Emails & Contact Details