Posted by NC wayne on February 10, 2021 at 07:02:11 from (173.189.97.253):
In Reply to: Diesel run a way posted by Steve Metcalfe on February 10, 2021 at 06:26:40:
On some old AC engines too long of a bolt in one hole would cause the rack to stick.
On two strike Detroits, lugging them down and stalling one under a load could cause them to bevspun over backwards, and start running in reverse. In that instance they would pull oil past the rings and burn it. The rack could also stick and cause it to run away in the normal rotational direction.
Pretty much any engine with a turbo can begin feeding off oil from the oil pan if the seals on the cold side of the turbo go bad.
Essentially, anything that can mechanically stick the fuel control device (governor, rack, etc), or anything that allows an uncontrolled fuel source to enter the intake can cause a run away.
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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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