1997 Ford F250 Evap large leak code

1997 FORD F-250
189,000 MILES • V8 • 2WD • AUTOMATIC
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WAYNECOPREACHER
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The Pcm is detecting an Evap large leak. I have traced lines and found no faults. I was thinking maybe the IAC was at fault or the PCV valve. Not sure tho. Dont have any tools to test the system.
Apr 27, 2010 at 10:02 PM
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BLACKOP555
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wouldnt be those. theres a valve on the tank. and then theres a vapor line running up to the charcoal canister. from there to the purge solenoid and then to the manifold.

best thing to do is get a smoke tester to do it because altho it says large leak. it can be very tiny.

also did you check the gas cap?
Apr 28, 2010 at 12:25 PM