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Discussion Starter #1
Please help, I cant find a mech. that knows anything. 2002 duramax will start but run out of fuel after 10 seconds. happens when truck sits for more that 2 hours and has less than 1/2 tank. The primer will get it started again and than it runs. Just had the fuel sending unit replaced.

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sounds like you have air coming in somewhere

did you check around your FF esp the WIF sensor?

they're usually good for a leak :)

your FF head unit may also be leaking

rebuild kits are cheap and take 20 mins
 

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x2 on an air leak kind of hard to see since the pump sucks from the tank to the motor, could be a fuel line but most likely fuel filter head or wif sensor
 

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Also check the plastic bleeder screw, could have a crack in the plastic allowing it to suck air. Vendors here have billet replacements for pretty cheap..
 
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