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Chevy/GMC Truck and Duramax Turbo Diesel Forum Discussion of General Topics related to All Chevy and GMC Trucks as well as the Diesels in them

I have a 03 duramax and sometimes it lopes when i start it. I have the PPE ported fuel ports would that have something to do with it?... JOIN NOW TO REMOVE TRACER

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  #1  
Old 11-21-2009, 08:25 PM
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Default Trucks loping when cold?

I have a 03 duramax and sometimes it lopes when i start it. I have the PPE ported fuel ports would that have something to do with it?
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  #2  
Old 11-22-2009, 10:18 PM
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could be fuel pressure regulator

lawnboy01's Sig:::07.5 GMC cc/sb Duramax LMM 4x4
Magnaflo exhaust, tie rod sleeves, shimmed, EGRless, airdog 150, transgo jr, EFI Live with DSP5!!!
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Old 11-22-2009, 10:20 PM
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how old is the fuel filter, the ported rails should have anything to do with it.

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Old 11-24-2009, 07:19 PM
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i changed the fuel filter about 5 to 6000 miles ago, but it only does it sometimes

Maxxingitout's Sig:2003 Duramax crew cab SWB 4x4 BFG Mud terrains KM2 LB7 Bullydog Tripledog 5" MBRP exhaust, AFE stage 2 cold air intake, PPE boost valve, PPE ported fuel rail fittings, Autometer gauges Boost, Pyro. Saving up for SC tranny....
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Old 11-29-2009, 09:45 PM
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check balance rates.

hotlb7's Sig:2003 LB7 With 90hp Dragon Flow injectors,Fass fuel system, EFi live tans and engine,4inch magna-flow , boost valve, AFe intake. On 285 tires whith OEM wheels ( Grand Daddy style).
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