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Change the oil and filter and let the engine get up to operating temperature. Replace the oil and filter again if it shows signs of dirt. if possible get one of those magnetic oil drain plugs that will pick up metal particles from the oil.

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โˆ™ 2015-07-15 19:14:04
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Q: How should you clean out the old oil sludge and residue from the crankcase of an engine that has been sitting for a year?
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no, the oil is mixed with the gas before it goes in the carb, so there should never be oil sitting in the crankcase.


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If there is any residue on the spark plug, it will not produce a sufficient spark for the engine ignition.


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Should A 1974 Volkswagen bus be turned on to check the oil?

No, leave the engine off to check the oil. When you start the engine it sucks all the oil out of the crankcase, so none will appear on the dipstick.


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None -unless the engine suffers from "blow-by" caused by excessive engine wear or non-functioning crankcase ventilation system


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The purpose of the PCV valve is to regulate the flow of crankcase fumes into the intake manifold where they can be burned. Prior to 1963, cars had no PCV and used road draft tubes that just left the hydrocarbon emissions from the crankcase out into the open air. The PCV valve also has a secondary role as a check valve, to prevent flow back into the crankcase. This prevents potential ignition of the crankcase fumes, should the engine backfire. The PCV system is also crucial for to proper engine sealing. The system alleviates crankcase pressure, which can push out on seals and gaskets, contributing to oil leaks.


Will your car run when gas gets into your crankcase oil?

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