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Order Ford 601 Parts Online

601 valve cover smoke

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04-26-2001 09:44:50

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I have a 1960 641 and I have noticed that after running for a while smoke comes from the breater on the valve cover what causes this? It runs great and does not seem to use oil.
Thanks, VC

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04-27-2001 18:26:13

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 Re: 601 valve cover smoke in reply to VC, 04-26-2001 09:44:50  
My 861 blew more smoke out of the breather than the exhaust. It didn't use much oil except when plowing in very tough ground. It ran fine and would have done so for a long time, but I decided to rebuild the engine. We found the cylinders to be out of round and some frozen rings. Thus the blow by. If you don't mind the smoke and it's not too bad I suggest living with it or look forward to spending about ( $1400 + ) for a overhaul. Please don't consider this advise, just a suggestion. Best of luck.

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04-27-2001 02:24:35

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 Re: 601 valve cover smoke in reply to VC, 04-26-2001 09:44:50  
It's probably blow-by, but I think I'd change the oil. If it still does it, a compression test might be a good idea. Of course, curing blow-by with an engine rebuild mostly is a matter of personal choice. Engines can run fine for a long time at reduced compression and power. Automotive emission controls have tended to sterilize ideas about engines. Most engines that have been in use for awhile have some blow-by. It's just that we don't see it anymore in cars. Itís a problem, I just donít know how to buy a used truck anymore.

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04-26-2001 13:34:11

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 Re: 601 valve cover smoke in reply to VC, 04-26-2001 09:44:50  
Could be blow-by gases escaping past the rings into the crancase or just any volitiles that are in the crankcase oil that is "boiling off". albe

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