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Old 01-07-2012
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Check Engine Light ON-Code P-0442

Hello folks, I've got a P-0442 OBD-II code on my 03' Ford Ranger 2.3. Apparently meaning that there is a small Evap system leak. I would appreciate any help with diagnosing this so I and try to repair it without going to my mechanic. Thanks in advance to all posters.
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Old 01-07-2012
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Put a film of grease on the gas tank cap gasket , clear the code and see if it comes back.
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Old 01-07-2012
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Thanks for the post. I did that last week when the CEL light originally came on as well as installing a new gas cap. The light went off for a week and then last night it came back on. Maybe the egr valve gasket or
something in that area?
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Old 01-07-2012
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Nothing to do with your egr. Its got a leak in the system that relieves fuel tank pressure, so a vent vapor purge solinoid or charcoal canistor or any piece of rubber hose in between. Sorry this is so wide open but they are a bitch to diagnose sometimes. In the shop we fill the EVAP system with smoke from a smoke machine and look for leaks. Sometimes you get lucky and find a cracked hose or something easy like that. Good luck.
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Old 01-08-2012
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Is there any way to find this leak without using a smoke machine which my mechanic wants to charge me $60.00 to find the leak.
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Old 01-08-2012
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Quote:
Originally Posted by bikkabee View Post
Is there any way to find this leak without using a smoke machine which my mechanic wants to charge me $60.00 to find the leak.
There isn't any other "safe" way to do it. And its actually a decent price. That's what I payed and I got lucky and they found it quick
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Old 01-08-2012
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Thank you for the info Brandon, I think I will just check all the hoses and if I don't find anything I will let my mechanic do the smoke test.
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