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DieselD24 12-16-2010 12:48 PM

What's your take?
I couldn't find anywhere else to post this so, it ended up here.

There's a lot of skepticism out there about idling your diesel at start-up. I would just like to know what peoples opinions on this are. Many people say different things, and i think it's a very interesting area on diesels that perhaps, some of us don't really think about or care for, especially if you don't know.

People say they idle for prolong periods of time and some say they idle enough to plug in they car charger and start moving.

What it boils down to is... good or bad?

What's your take?

Thanks again!


RamTech 12-17-2010 10:32 AM

Extended idling won't hurt the 5.9 the same way it will the 6.7 because of the lack of emission components on the 5.9. It will however waste fuel and increase the possibility of coking the injectors if idled for long periods before reaching normal operating temps.

kb9lsv 05-15-2011 11:22 PM

prolonged periods of idling can cause valves to stick if engine is not at operating temp, allow to idle 5 mins or so when really cold and then just take it easy until up to temp. if you want to idle for long periods then it needs to be idled up to 1200 or so to prevent carbon build up on valves.

FIRESTARTER 05-19-2011 11:19 PM

idling for prolonged periods of time causes cylinder wash and won't lubricate your motor well and can cause damage.

a lot of people rig a pto throttle on that raises your motors rpm and prevents this.

I usually use my block heater, but won't idle my truck longer than 30 minutes... some people idle them forever

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