This is topic Failed EVAP test in forum Tech Talk at Northern California Ford Owners  .


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Posted by Maxoctane (Member # 1466) on :
 
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!
 
Posted by maeco (Member # 2578) on :
 
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
 
Posted by JohnB (Member # 969) on :
 
Check your filler neck seal, the seal at the fuel pump, and the hoses from your EVAP cannister.
 
Posted by 89foxstang (Member # 5908) on :
 
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 ]
 
Posted by maeco (Member # 2578) on :
 
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$$$.
 
Posted by Maxoctane (Member # 1466) on :
 
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.
 
Posted by BLK 90 GT 5.0 (Member # 7534) on :
 
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
 
Posted by Turbizzy (Member # 5620) on :
 
Had the same prob... payed the smog dude 20 bucks to just pass it lol.
 
Posted by Maxoctane (Member # 1466) on :
 
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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