Trucks loping when cold?

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11-21-2009, 07:25 PM

Maxxingitout

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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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11-22-2009, 09:18 PM

lawnboy01

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could be fuel pressure regulator

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11-22-2009, 09:20 PM

2500HeavyDuty

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how old is the fuel filter, the ported rails should have anything to do with it.

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11-24-2009, 06:19 PM

Maxxingitout

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i changed the fuel filter about 5 to 6000 miles ago, but it only does it sometimes

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11-29-2009, 08:45 PM

hotlb7

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check balance rates.

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