A Diesel at Idling RPM’s .......
I periodically read a thread that relates to an engine that idles too frequently ( an unknown amount of times ) and not run at highway speeds is not a good idea. But .... I never read the mechanical r...
Forum Discussion
ScottG wrote:
Your engine will not get up to operating temps. This is very hard on the injectors for one. The colder temps inside the combustion chamber cause the fuel to cause build up on the tips and also to sort of sand blast them as the cold mixture swirls around them which greatly expedites wear.
Your much better off letting it sit than idling for it 30 minutes.
It's not so much that the injectors get build-up on them - the cool combustion chamber temperatures cause the fuel to not burn completely. It ends up condensing on the cylinder walls, and washing the thin film of oil off the walls. The fuel ends up getting past the rings and into the crankcase, thinning out the oil. So, you lose lubrication on the cylinder walls, causing wear from the rings, and thin out the oil, causing more wear on all the lubricated parts.
Look up "wet stacking" for a fun read...
