On the issue of blowby - Ford Powerstroke Diesel Forum
 
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post #1 of 5 Old 05-25-2013, 08:49 AM Thread Starter
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On the issue of blowby

My truck appears to have a decent amount of blowby. There is a steady column of smoke rising out of the dipstick tube when the truck is at idle. I took it in to the steelership recently and asked them to run a check and access the overall health of my engine. They said that the crank case pressure test yielded a result of only 1psi.
Spec. is 4 psi. max. So it seems that I'm not too bad off there. They said overall it was in good shape.....(but sometimes I wonder about those guys)

My question is, how much smoking is normal? I have 212,xxx on her. Not a lot really. I'm interested in hearing others experience with blowby vs. crank case pressure.
So if my rings don't appear to be so worn, where is all the smoke coming from? Can someone recommend a product that would clean out any soot and gunk that might be causing the problem?

Thanks,
Mcstiggs
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post #2 of 5 Old 05-25-2013, 08:51 AM
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Motor honey, all mine smoke, it's just what I've found to be normal

-Kris-
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post #3 of 5 Old 05-25-2013, 09:14 AM
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X2. Mine does this also. If it's below spec PSI, run 'er.

05 F350 Crewcab
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post #4 of 5 Old 05-25-2013, 09:40 AM Thread Starter
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Thanks Fellas. I feel better already.
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post #5 of 5 Old 05-25-2013, 08:00 PM
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If it starts, run it. If it's too sick to run, it won't start. --> basically an old locomotive mantra.

FWIW, my '95 F250 with 286k runs just as well as my '95 Superduty with only 27k. Both have almost the same amount of blowby. Remember, you've got a 444 cubic inch pump running, so there will be air moving if the crank is turning. I reckon the big thing is oil loss. If you're leak free, but consuming a fair amount of oil, start looking at injector cups, worrying about rings, etc.

So not to worry.

~Bruce~
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