Re: Diesel Engines

Posted by jdemaris on February 16, 2007 at 05:37:25 from (66.218.12.230):

In Reply to: Diesel Engines posted by Raleigh on February 15, 2007 at 18:31:39:

Seems it must vary with the make and type of diesel engine. I know that in the far north - during the winter when temps. rarely get above minus-30 - they leave the diesels running all winter, night and day. How it effects the lives of the engines - I don't know - but I assume shutting them down and trying to restart at fifty below is worse.
The EPA is trying to make it illegal for large diesel trucks to idle in many locations - that because those diesels run inefficiently at idle and put out extra emmissions.
I have several Detroit Diesels - that once hot - will barely have any oil pressure at hot idle - maybe 2 or 3 PSI. They run fine otherwise - but I assume long idling for them is not a great idea.
One side-note - that doesn't prove anything - but still kind of funny. A friend of mine who was trucking goats with an 87 Chevy diesel Suburban - got down to market in New Jersey and it would not shut off. Someone tried to help by pulling the wire off the injection pump - but it kept on running. He said the heck with it, and left if running for four days - mostly idling. When he got back home - I bought it from him. I fixed it and drove it to 520,000 miles on - when the crankshaft finally broke into three pieces. When I stripped the engine for any parts I might save - all looked fine inside (other than a broken crank and cracked block). Combustion chambers were amazingly clean for a 6.2 diesel with over 500K on it.
And one more side-note. I bought a 86 Chevy diesel Blazer from the local water-department. It was used for driving around town at 10-20 MPH it's entire life - to check water-meters and such. Most of the time- it sat with the engine idling - they rarely shut it off. I bought it with 70K on the odometer and who nows how many idling-engine-hours. I was worried it would blow-up as soon as I started using it hard. It's now got 320,000 miles on it and runs great.

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