Posted by Brian Jasper co. Ia on October 19, 2009 at 18:47:31 from (67.142.130.35):
In Reply to: Fuel in the engine oil posted by Don McCullough on October 18, 2009 at 15:22:37:
Don, the seals for the pump shaft are about $2 ea. Pull the pump and slide the shaft out. It will be obvious if one of the seals were rolled over. Also look in the bore the shaft rides in. It is a bronze bushing and over time the seals will wear grooves in the bushing. If the bushing is worn, you will want to have the pump rebuilt. I have a D17 Allis with a diesel in it. When I got it it was very cold and we couldn't get it started. The oil looked clean and it was obvious the engine had been apart. I was driving it on the road when it started to labor real bad and I saw LOTS of blow by coming from the breather cap. I shut it down immediately and that's when I figured out why the oil was so clean. It was mostly fuel. I fixed the pump seals, flushed the fuel out of the oil, put in a new filter and filled it up with new oil. It's been fine since.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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