Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

hard starting @ about 10 above and lower

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  #1  
Old 01-17-2011, 03:09 PM
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Default hard starting @ about 10 above and lower

Hi Guys, I noticed with my 02 lb7 that it starts hard at about 10 above if it sits all night, last year it started good all the time down to -10 below. It just turnes over and over and over. If I park the truck in the garage at night it is about 20 degrees in there it starts right up. I even put the light weight oil in it this year to see if it would help. When the truck starts it sounds like a old diesel tractor starting on only a couple cylinders then it revs up and smoothens right out. I am going to check balance rates this morning I just checked them a couple months ago and they were fine. I put a new wix fuel filter on it too, no check engine light is on eather... what do you guys think???? Thanks

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balance rates are good on the injectors, I am thinking if is somthing with the glowplugs, any ideas where to start? no codes are showing, thanks
 

Last edited by SnoMan; 01-17-2011 at 03:09 PM. Reason: Automerged Doublepost
  #2  
Old 01-17-2011, 05:12 PM
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Default Re: hard starting @ about 10 above and lower

Try plugging it in at night and unplug it right before you start it up

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Old 01-18-2011, 10:13 AM
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Have your batteries checked one is probably weak.
 
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Old 01-18-2011, 12:07 PM
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Agreed, its probably a bad battery, if there were anything wrong with your glow plugs or intake heater there would have been a code

try to test the batteries, but if you have to replace one it is better to replace both at the same time
 
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Old 01-19-2011, 08:59 AM
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Batterys were tested, I found the problem the buss bar that goes to all the glow plugs was broke right after the first glowplug. Had no codes or nothing.
 
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Old 01-19-2011, 10:18 AM
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good to know what was wrong
 




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