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my truck died and then wont start back 05 lly. then i finally got it started after priming the fuel a few times whats wrong?
 

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Either it is sucking in air or really dirty fuel filter. Fuel filter heads wear out fairly regular on these engines. Change the fuel filter and make sure the Water sensor at the bottom of the filter is not leaking(another common problem). Pump the primer and get all the air out then pump till it is firm. If that don't fix it you can either rebuild the filter head with new O rings or replace it. Several vendor on this site sell both for a lot less than dealer.
 

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You probably have a leak at the filter housing-- check the bottom of the filter-- is it wet and leaking-?

Several vendors here have kits to repair the housing. Merchant /Duramax Store
 
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