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Author
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Topic: Failed EVAP test
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Maxoctane
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Member # 1466
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posted
 
 
Just went to get smog on my 91 LX (all stock, 180k miles) at a test only station. Passed the tailpipe test but just barely failed the neew EVAP pressure test. So basically I've got to find the leak and fix it.
My question is; has anyone failed this test also and where would the most common spot for a leak to be?
Any and all replies appreciated!
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www.maxcarauto.com
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Posts: 332 | From: Martinez | Registered: Jun 2002
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maeco
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Member # 2578
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posted
i would check the gasket arround the gas filler neck where it attaches to the gas tank.you should see this from under the car.just came from the test only my self failed on sat turns out my vacuum hose split and its the one going to the intake manifold from smog pump.lask week i got 114 passing is 96 just an hour ago passed with 96....good luck bro
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Looking for clean white mustang email me
Posts: 2408 | From: bay area | Registered: Mar 2003
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JohnB
Tech Moderator
Member # 969
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posted
Check your filler neck seal, the seal at the fuel pump, and the hoses from your EVAP cannister.
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1965 Shelby Cobra
1993 Cobra
2012 F150 Raptor
2020 GT500
Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002
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89foxstang
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Member # 5908
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posted
is your filler neck grommet leaking maybe ? because you didnt say anything about a fuel leak , also i think they tested the cap seperate right? i woudl check there first then maybe the oring around the pump?
Edit: ^ damn you guys are fast haha
[ August 10, 2009, 05:08 PM: Message edited by: 89foxstang ]
Posts: 825 | From: Davis | Registered: Aug 2005
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maeco
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Member # 2578
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posted
quote:
Originally posted by 89foxstang:
is your filler neck grommet leaking maybe ? because you didnt say anything about a fuel leak , also i think they tested the cap seperate right? i woudl check there first then maybe the oring around the pump?
Edit: ^ damn you guys are fast haha
lol bored in the car waiting for the wifey.
john still need the gears to be put on i got it the day i talked to you but alot had cae up.but iam halfway there$$$.
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Looking for clean white mustang email me
Posts: 2408 | From: bay area | Registered: Mar 2003
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Maxoctane
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Member # 1466
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posted
Just dropped the tank. No obvious leaks but put a little wheel bearing grease around the filler neck and pump O-ring. See if that works.
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www.maxcarauto.com
BUY/SELL/TRADE/FINANCE
Posts: 332 | From: Martinez | Registered: Jun 2002
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BLK 90 GT 5.0
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Member # 7534
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posted
quote:
Originally posted by Maxoctane:
Just dropped the tank. No obvious leaks but put a little wheel bearing grease around the filler neck and pump O-ring. See if that works.
I had same prob on a friends car we replaced all the rubber o rings
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-916 MUSCLE-
90 Gt
02 lancer
Posts: 836 | From: SAC (916) | Registered: Mar 2007
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Turbizzy
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Member # 5620
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posted
Had the same prob... payed the smog dude 20 bucks to just pass it lol.
Posts: 166 | From: 510 | Registered: Apr 2005
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Maxoctane
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Member # 1466
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posted
quote:
Originally posted by Maxoctane:
Just dropped the tank. No obvious leaks but put a little wheel bearing grease around the filler neck and pump O-ring. See if that works.
It worked! Passed.
Thanks for the help gentlemen
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www.maxcarauto.com
BUY/SELL/TRADE/FINANCE
Posts: 332 | From: Martinez | Registered: Jun 2002
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