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Old 04-15-2004, 01:33 AM
H-townbenzoboy's Avatar
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Question Blowby Question

I know this issue has been beat to death in the past, and I've looked in the archives for information, but I have decided I need to bring the question up to get my answer. My engine is a OM617 turbo, with over 200k miles on it by estimate. It has some blowby on it, but I'm guessing the engine is good since a compression test was done on it about 3 weeks ago with good numbers, and a valve adjustment was done about, est. 500 miles ago. It has a small oil leak on it from a seal, which is no problem, and this is my question. Do you think blowby is a problem right now? I think the engine has plenty of miles left on it before it needs an overhaul. But the blowby is such that it sometimes blows the breather tube off of the air filter containter a little bit. Sometimes when sitting still, the blowby can be seen coming from under the hood. When I reapply the breather tube, no more blowby will come from under the hood, but today, I noticed vast quantities of white/gray smoke being emmited from the tailpipe at startup. It was about 68 degrees outside. This worried me. Is that blowby smoke going through the exhaust, or is it something else more serious?

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81 MB 300SD, 82 MB 300D Turbo (sold), 04 Lincoln Town Car Ultimate

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Old 04-15-2004, 02:15 PM
SW SW is offline
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My car does the same thing every morning. I would not worry about it until the engine starts to consume oil excessively. There are no emissions laws to worry about for now, so I would run it until the need for replacing the valve stem seals arises.

2001 Dodge Ram 2500 Cummins Turbo Diesel - 4x4, auto, 3.54 gears, long bed
'92 300D 2.5 Turbodiesel - sold
'83 300D Turbodiesel - 4 speed manual/2.88 diff - sold
'87 300D Turbodiesel - sold
'82 300D Turbodiesel - sold
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