was just a engine question, but now a 911!

[chrisfletcher]

Well guys this is my daily driver, and im a bit concerned because of my lack of diesel knowledge. please read over my other post and just tell me your opinion. itd be greatly appreciated.

http://www.powerstroke.org/forum/7-3...ine-issue.html

Oh....and about that old myth "its better to let a diesel idle for X Minutes rather than shutting it off....".... truth or myth? and if true.. why?

also im in maine, and in the night temps drop quite low this time of year... what kind of things should i be considering?

[Dave]

the idling myth is no longer accurate. as to cold weather i tend to plug in the block heater below 20 degrees to aid in warm up. on the other issue hopefully one of the techs or someone more knowledgable than me on that issue will chime in

[99f350fp]

My understanding is that you let it idle to cool off your turbo. If you shut down with a hot turbo it "cooks" the oil that is left in the turbo. Idle it and oil cools the turbo down enough for a safe shut down. Thats what im told.

[Dave]

I just shut down if my pyro is below 400 degrees. which is about as long as it takes me to pull in my driveway

[chrisfletcher]

Originally Posted by 99f350fp

My understanding is that you let it idle to cool off your turbo. If you shut down with a hot turbo it "cooks" the oil that is left in the turbo. Idle it and oil cools the turbo down enough for a safe shut down. Thats what im told.

ah sorry i guess i didnt write what i meant to say...... I understand how turbos work, and coking. im an import guy, so turbos are pretty familiar to me.

What i meant was say i roll up to a jobsite. and have to run inside. I was wondering if was better to let the truck idle for 15minutes rather than shutting it off, and then turning it back on when im ready to leave.

[Dave]

Go ahead and shut it down if thats the case. That myth no longer applies. with fuel costs these days its unnecessary anyway

[chrisfletcher]

ok sounds good. thanks guys..... now anyone got any info about my problems in the link.... those are my real concerns!!

[mrnecsteve]

Yep...shut it down...unless you are an ice road trucker in 30 below.

[WILLIAM LORCH]

I'm very familuar with this "COOLING "the turbo,as this is mainley used in AIRCRAFT turbos. where you are dealing with a lot colser tolerences.. and different tempetures .. I have taken off in 3rd gear a lot than hte lite comes on, (the 1 in hte head). Without a turbo the diesel takes a moment or 2 to "spool up",ohter than that its the same internial combustion engine - the spark plugs. about it!!!!!!!!!!!! Bill

[chrisfletcher]

well guys....i think ive got issues..

i just pulled a 6x12 enclosed trailer with 2 sportbikes in it (about 450lbs each, and the trailer weighed in at 2900 according to the tag), down the highway at 70-75mph. i got a weak 10mpg! and could smell raw diesel anytime the window was rolled down. the truck would lose momentum going up hills and under full throttle would drop 5-10mph.

whats going on?!?! someone point me in the right direction this is my daily driver!!