Gas spewing out of filler neck? RESOLVED - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 10-08-2007, 02:54 PM   #11
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You don't have a solenoid on the canister. You have the one between the UIM and front valve cover. The bracket is bolted to the front cylinder head.
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Old 10-08-2007, 02:56 PM   #12
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Quote:
Originally Posted by willwren
You don't have a solenoid on the canister. You have the one between the UIM and front valve cover. The bracket is bolted to the front cylinder head.
Replaced that and problem still persists.

Is it safe to use compressed air to blow out the lines?
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Old 10-08-2007, 04:16 PM   #13
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Not sure..it is safe to jack up the car.. support it properly and look at the lines for any kinds or issues.

That should be the first thing, then changing out the various parts. And Bill W.. I believe they may have a purge soleniod on the canister and the purge switch on the valve cover. My 97 has two electronically controlled items in line of the evap, one soleniod/valve and one switch.
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Old 10-08-2007, 04:25 PM   #14
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My bad Cody-man...I made the assumption it was spewing out when you filled it up... Yes, you could have added this to your original thread on the evap code. My bad. I'll move this for you and add a link to this in your old thread.

Please continue discussions in one thread only. Thanks and again, sorry for the confusion. For reference purposes: Original conversation started here: http://www.bonnevilleclub.com/forum/...=959214#959214
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Old 10-08-2007, 04:44 PM   #15
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Oh, no biggie Tracy, we all misunderstood each other then.

Let'* recap what I've done so far.

Replaced gas cap
Checked all hoses in the engine bay
Replaced Evap solenoid (the one above the valve cover)
Checked canister (no raw gas in it)
Checked for cut or damaged wires (none found)

per Bill B'* suggestion, I'll check the tank area.
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Old 10-08-2007, 04:51 PM   #16
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Not really related, but something I like to share anyways..

I had an issue with an un earthly slow pump about a month ago, literraly like 2 gallons/minute rate...

It was pumping so slow, it didn't build pressure enough to auto-shut off the nozzle, I saw it hit 13 gallons, and at most I should've had 12 in there... Needless to say i ran to stop it, and as I pulled out the filler, it came up..

Do you have access to a scanner to see if the EVAP is operating correctly? What'* your weather been like? I find it hard to believe that the EVAP can cause that much pressure to build up after you've used that much fuel...
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Old 10-08-2007, 05:44 PM   #17
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I jacked up the car and looked at the lines. No issues there, just a bit rusty but nothing that could causes this. I also looked at the filler neck, no issues there too
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Old 10-11-2007, 02:12 PM   #18
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Bringing this back...

The vent lines, I know they start at the charcoal canister but where do they end at? Do they go back into the gas tank or is there a place that you can disconnect before it enters the gas tank (supposing that it does go back into the gas tank) I want to blow out the lines with compressed air to remove that from the list of possibilites.
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Old 10-11-2007, 03:48 PM   #19
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On your year..the evap line is one of the three that can be located at the fuel filter (in front of passenger rear tire).

The supply line runs through the fuel filter
The return line has the push and click connector and slightly smaller than the supply line
The evap line is simply a hose that slips over the metal line from the front of the car.
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Old 10-11-2007, 09:06 PM   #20
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I looked at the ful filter area. I found the three lines however they all share the same fittings. Would the fuel supply be the biggest one then the return line the second biggest and the EVAP line being the smallest one?
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