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

2003 Duramax Starting Problem

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Old Feb 1, 2010 | 07:33 PM
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Default 2003 Duramax Starting Problem

My 03 Duramax cranks 7 to 8 seconds (longer when cold) before firing, then runs good. I thought maybe crank pos. sensor. Is there an easyway to check and replace this? Any help on this would be great.

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Old Feb 1, 2010 | 07:45 PM
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welcome to diesel bombers and post up your question here for a better response Chevy/GMC Duramax 01-04 LB7 - Diesel Bombers diesel bombers the #1 diesel site around
 
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Old Feb 1, 2010 | 07:53 PM
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Hey Thanks
 
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Old Feb 1, 2010 | 07:59 PM
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Good luck with your issue... Hope it's something simple!
 
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Old Feb 2, 2010 | 03:48 AM
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Old Feb 2, 2010 | 04:02 AM
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Welcome to DB.
 
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Old Feb 2, 2010 | 05:10 AM
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Welcome to Diesel Bombers
 
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Old Feb 2, 2010 | 11:34 AM
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Old Feb 2, 2010 | 11:49 AM
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Check for a leak in fuel pressure somewhere first. Have you tried pumping up at the fuel filter before cranking? Try that and see if it improves cranking time.
And welcome to the site dude.
 
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Old Feb 3, 2010 | 12:43 AM
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does it feel like its got power after its running? it might need a fuel filter, when was it changed last?
 
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