Engine light
Thread Starter
Intermediate
Joined: Aug 2011
Posts: 25
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Engine light
My engine light has gone on and a friend of mine checked the code with his scanner and found it to be k0442. He said that it’s the Evap system but I can’t find anymore info about the code.
Does anyone know more?
Does anyone know more?
Moderator, Tech Contributor
Joined: Sep 2013
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From: Cape Coral, Florida
It’s a P0442 and without a bi directional scan tool and a smoke machine you’ll never find that small leak...best thing is take it to a shop if you don’t have that diagnostic equipment !!
Last edited by C5 Diag; Aug 18, 2018 at 10:23 PM.
Instructor
Joined: Jun 2018
Posts: 176
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From: Plainfield, IN
The cheapest/quickest cause of this is a leaking gas cap. Look for any broken hoses in the evap system. Past that as stated a smoke machine is needed to properly diagnose. It puts smoke into the system so the leak will become visible.
Moderator, Tech Contributor
Joined: Sep 2013
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From: Cape Coral, Florida
Thread Starter
Intermediate
Joined: Aug 2011
Posts: 25
Likes: 0
what’s the best way to determine if the gas cap is leaking?
Thread Starter
Intermediate
Joined: Aug 2011
Posts: 25
Likes: 0
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Zen Vet Master Level VII
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From: Southlake, TX
First disconnect the vacuum line from your vacuum booster for your power brakes. Light the cigar (the smellier and smokier the better) and get her going so the smoke is roaring. Get a big mouthful of smoke and blow into the end of the vacuum line. Do this several times making sure to continue to fill up your engine intake. If you have a leak, the smoke will begin to spurt out of the hole. You have found your leak
The buddy is there for laughs and the beer help to rinse out your mouth from all that gross cigar taste. I;ll recommend Shiner Ruby Red (with grapefruit) as the citrus does a pretty good job.
Safety Car
Joined: May 2016
Posts: 4,609
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From: Erlanger, Kentucky
Next thing would be to get a new gas cap.
9 times out of 10, that is all that the problem is.
Moderator, Tech Contributor
Joined: Sep 2013
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From: Cape Coral, Florida
Do this test the "old school" way in your drive way with a friend. You will need a cigar and a six pack of beer.
First disconnect the vacuum line from your vacuum booster for your power brakes. Light the cigar (the smellier and smokier the better) and get her going so the smoke is roaring. Get a big mouthful of smoke and blow into the end of the vacuum line. Do this several times making sure to continue to fill up your engine intake. If you have a leak, the smoke will begin to spurt out of the hole. You have found your leak
The buddy is there for laughs and the beer help to rinse out your mouth from all that gross cigar taste. I;ll recommend Shiner Ruby Red (with grapefruit) as the citrus does a pretty good job.
First disconnect the vacuum line from your vacuum booster for your power brakes. Light the cigar (the smellier and smokier the better) and get her going so the smoke is roaring. Get a big mouthful of smoke and blow into the end of the vacuum line. Do this several times making sure to continue to fill up your engine intake. If you have a leak, the smoke will begin to spurt out of the hole. You have found your leak
The buddy is there for laughs and the beer help to rinse out your mouth from all that gross cigar taste. I;ll recommend Shiner Ruby Red (with grapefruit) as the citrus does a pretty good job.
Last edited by C5 Diag; Aug 20, 2018 at 08:32 AM.
Moderator, Tech Contributor
Joined: Sep 2013
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From: Cape Coral, Florida