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Would a bad evap purge valve (N80) cause...

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Old 10-01-2007, 10:04 PM
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Default Would a bad evap purge valve (N80) cause...

the car to have difficulty starting after filling up with gas? When I unscrew the gas cap, I don't hear a vaccuum exchange. I have to crank it for a good 10 seconds to start the engine. I also hear a muffled knocking from under under the hood, as if something is loose.

I also have poor mileage, but don't know if this is related.

I have these two codes:
16825 - EVAP Emission Control Sys: Incorrect Flow
P0441 - 35-00 - -
16839 - EVAP System: Large Leak Detected
P0455 - 35-00 - -

And yes, my gas cap is on tight.

TIA
Old 10-01-2007, 10:08 PM
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maybe bad gas cap.
Old 10-01-2007, 11:17 PM
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Default I just had the large evap leak code and found a hole in a hose next to my exhaust where.....

it had been burned through and that problem was solved
Old 10-01-2007, 11:41 PM
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Other than visual you will have a smoke the system.
Old 10-02-2007, 04:47 AM
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Default if vac hoses, and the line by exhaust check out fine, it's the gas cap.

you can test the gas cap if you put some plastic foil on it (it will seal up well) and tighten it.. let the car go through a few cycles and check the system.. Ericvonha had this problem STFA for his write up.
Old 10-02-2007, 05:33 AM
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Default Back to Curt, I'm going there tomorrow if you can go, I need to drop my car off :)

BTW, your car is teh slow!!! :P
Old 10-02-2007, 08:19 AM
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Yeah, I can go tomorrow. Let's grab lunch. And your car is slow on the track!!! =P
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