Major blowby cause - Ford Powerstroke Diesel Forum
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post #1 of 2 Old 03-25-2012, 08:34 AM Thread Starter Rookie
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Major blowby cause

Is there any other possible cause for major blowby (besides past or through my pistons) in my 7.3? It ran great until I had to smog it and dealer installed new cam sensor and pcm. It immediately lost power and started smoking bad with major blowby.
Dave Sr is offline  
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post #2 of 2 Old 03-25-2012, 09:28 PM
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Yank that cps out and put a good one in. It's not firing right and blowby is exhaust blowing past your pistons. The dealership needs to fix their work and don't pay a penny for them to get it right.
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