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Smoke out of oil cap

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preacherman

10-09-2000 16:31:22




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I have a '52 8N and I recently noticed a little smoke coming out of the oil cap. What do ya'll think the problem is or is there one?




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raytasch

10-09-2000 17:31:28




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 Re: smoke out of oil cap in reply to preacherman, 10-09-2000 16:31:22  
Preacherman, If the old tractor runs ok, has decent oil pressure, and no knocks or unusual noises, don't worry about a little smoke from the crankcase breather. Keep it clean and serviced. The oil cap breather is the only crankcase ventilation the old N has and when she gets under load some of the combustion gasses get past the rings and into the crankcase. Sure, the rings are probably worn but with oil changes she might run many years before anything would have to be done to the engine. At this stage, some owners rationalize that "I am going to have to overhaul it so why change oil and do other service". With this scenareo it is usually "down hill fast". The N was designed before EPA, when things were simple, and our land could handle the number of people and their resultant polution. There was no provision to capture and burn those crankcase vapors. I would ask if you have a thermostat in the tractor. With cooler weather the N might not be getting hot enough to burn off some of the polutants and moisture in the crankcase. A milky substance forming at the vent cap is a sign the tractor need to warm up. ray

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norm-wy

10-09-2000 16:49:36




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 Re: smoke out of oil cap in reply to preacherman, 10-09-2000 16:31:22  
Blowby past the rings is intended to be released from the crankcase that way. However, you might want to do a compression check to see if your rings are OK just to be safe. Let's see if anyone else has other ideas. FWIW



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