Thread: engine blow by
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Old 07-16-2008, 10:12 AM   #2 (permalink)
A#1
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Join Date: Jul 2008
Posts: 47
OS: Windows XP Pro Service Pack 2


Re: engine blow by

blow by is when the piston rings have lost their tolerance to seal the compression of the power stroke...thereby allowing enging oil via the oil pump to be pushed out on the power stroke...or even the exhaust stroke...hence having smoke from the tailpipe...usually blow by on the power stroke leaves oil residue in the intake filter pan...where your air breather filter is located...so if your experiencing one or both of these problems...piston rings are shot...and or cylinder bore has become slightly egg shaped...(out of true round)...due to normal wear of a vehicle having 200,000 miles on it
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