Canister Purge Delete
Burning Brakes
Joined: Jan 2002
Posts: 1,228
Likes: 1
From: Dallas Texas
Is yours faulty? Besides ridding the compartment of one line, I don't see the benefit. I guess there could be gasoline vapor released into the engine compartment, which is always fun. If that pressure is not released, is just going to accumulate in the tank?
Race Director
Joined: Jun 2004
Posts: 13,939
Likes: 705
From: WI
I've wondered about that to. How much pressure is there going to be and will it damage anything? I've read posts about plugging the line. Doesn't the system help in a roll over to? I have read posts about leaving the line open, wouldn't gas spill out into the engine making a fire, if you rolled? Removing everything and getting a vented gas cap seems best (very little gas comes out a vented cap compared to an open hose, I've rolled snowmobiles many times) or just keep the system working.
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
I've been considering this so to not have the extra build up on the back of the butterfly and some on the inside of the intake. I was going to use a vented cap. Leave the current line going to cannister from the tank and disconnect it at the top of the cannister and connect it to the bottom line so that leads to the atmosphere.
Plugging it is not a good idea. I think for safety puposes there would need to be a fuel pump/power shut off,(or as in nhra rules of having an external power on -off switch visible) in a roll over situation. If the igniton was on, and car running, the pump would be on, and there would still be line pressure. It would be the available spark or power that could ignite the fuel.
Plugging it is not a good idea. I think for safety puposes there would need to be a fuel pump/power shut off,(or as in nhra rules of having an external power on -off switch visible) in a roll over situation. If the igniton was on, and car running, the pump would be on, and there would still be line pressure. It would be the available spark or power that could ignite the fuel.
Last edited by mseven; May 26, 2007 at 10:28 AM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
I don't believe in eliminating things without reason. Everything on the top end on mine is aftermarket with no other emmisions devices. I think for certain applications if it well thought out it can be accomplished w/out problems.
My reason is that I really don't like seeing all the machined and polished out pieces getting the baked in deposits, especially the back of the TB area. I would imagine everything throughout the intake will aquire deposits including EGR. I might add for others who read this, my experience (lap top is my only passenger) is the cannister purge has no effect on blm, tune etc.
My reason is that I really don't like seeing all the machined and polished out pieces getting the baked in deposits, especially the back of the TB area. I would imagine everything throughout the intake will aquire deposits including EGR. I might add for others who read this, my experience (lap top is my only passenger) is the cannister purge has no effect on blm, tune etc.
Racer
Joined: Jul 2006
Posts: 319
Likes: 0
Vapor canister
No attempt to hijack, but when I run my gas tank low (reserve), I always get a pressure build up that vents when I remove the gas cap. It seems to blow pretty good... Is this indicative of a faulty cannister? Seems like the pressure should be sending the vapors to the canister until they are purged via vacuum into the TB. Sorry again for the intrusion.
Race Director
Joined: Jun 2004
Posts: 13,939
Likes: 705
From: WI
As far as I know there is no way to tell if the system is OK just from that info. There should be tank pressure, if there was never tank pressure then I would be more worried that it didn't work.
Racer
Joined: Jul 2006
Posts: 319
Likes: 0
Mines probably normal then. I have had an irregular idle and pretty crummy MPG for a while now, so I continue to look for possibilities. It doesn't stall and runs fine on the highway, just not the best at idle. Good thing I spend a heck of a lot less time idling than driving...
Pro
Joined: Nov 2006
Posts: 638
Likes: 0
From: Plano TX
No attempt to hijack, but when I run my gas tank low (reserve), I always get a pressure build up that vents when I remove the gas cap. It seems to blow pretty good... Is this indicative of a faulty cannister? Seems like the pressure should be sending the vapors to the canister until they are purged via vacuum into the TB. Sorry again for the intrusion.
Racer
Joined: Jul 2006
Posts: 319
Likes: 0
This is from my 85 FSM... hope it helps : http://www.larryvhenderson.info/corv...urge_valve.jpg
