03-30-2013, 11:29 PM
Compression Ignition Addict
Join Date: Mar 2011
Location: Chicago, IL
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6.0L cold stumbling questions
Hello just picked up my first diesel (2nd Ex) and have some questions about the diesel drivertrain.
For days it is 30-50F how long does it have to idle/warm up before you can drive it?
When starting I turn the key and hold it until after the glow plug light on dash goes out and wait further until I don't hear the buzzing sound under the hood THEN I turn the key to start it. It starts up fairly quick and idles fine unless it i really cold then it will have a slight lope.
When I first start it there is a puff of white smoke and it idles fine. If I try driving it after a few minutes of idling if it was started cold it feels like it only has 50hp. It accelerates VERY slow and at 2300-2700 it just revs like it is governed and I have to lift up the gas pedal so it can upshift and accelerate at lower rpms.
Sometimes after being warmed up it accelerates normal from a stop but can still get hung up at 2500-3000rpm and I can see white smoke coming out the exhaust pipe. Again I lift up the pedal and it upshifts then accelerates.
I have let it idle for 20-30 minutes and it was at operating temp then it accelerates from stop fine but can sometimes still also gets stuck at 2500 rpm.
After a few accelerating cycles it stops and it really accelerates at that same rpm with the whistle sound of the turbo.
Is this stiction? Or is it stuck turbo vanes? Or injectors?
Is there a test that can be done by Ford or independent diesel shop that can electronically look at the performance of the injectors? These were supposed to have been replaced 50K ago with new Ford's.
Last edited by rowekmr; 03-31-2013 at 08:45 AM.