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Chevy/GMC Duramax 04.5-05 LLY Discussion of Chevy and GMC Trucks with LLY Duramax Turbo Diesel Engines

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  #1  
Old 05-04-2011, 02:33 PM
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Default Duramax Won't Start

We are working on one in are shop and it won't start. We have fuel to all the injectors and replaced the primer on it. The owner put shims in the fuel rail so it would get more fuel and ever since then it won't run right. It seems like the injectors won't open at all cause there is no smoke. HELP!!!!!!

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  #2  
Old 05-06-2011, 01:04 PM
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Did it come in for a no start or did it not start after some work was done?

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Old 05-08-2011, 05:00 PM
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It wouldn't start after he put shims in the rail.
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Old 05-08-2011, 08:44 PM
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pull the shims out and see if it runs, thats where i would start make sure he didn't do something wrong with the install. also make sure he hooked everything back up during the assembly process

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Old 05-09-2011, 07:51 AM
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Yep. Glow plug controller would be the first thing I'd check.

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Old 05-09-2011, 09:46 AM
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K will do
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Old 05-09-2011, 05:10 PM
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is it turnin over but wont start? if so when you do the shim kit or rail plug you lose all prime to the rail so you have to re-prime the rails again. only other thing i can think of is did you lose the spring in the valve?

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Old 05-10-2011, 09:43 AM
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Yes it is turning over and it won't start. We have fuel to the injectors.
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Old 05-10-2011, 12:02 PM
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Originally Posted by Smarty=Cummins View Post
Yes it is turning over and it won't start. We have fuel to the injectors.
if you have fuel to the injectors it sounds like the rail isnt maintaining pressure to keep it to the injectors...something got messed up in the FPRV when you did the shim kit
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Old 05-10-2011, 12:18 PM
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We didn't put the shims in the owner of the truck did. So I don't what he did to it but you think it comes back to the shims.
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