Performance and Accessories 2nd gen only Talk about Dodge/Cummins aftermarket products for second generation trucks here. Can include high-performance mods, or general accessories.

Dead Baby

Old 01-06-2009, 09:47 AM
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Dead Baby

I have a Walbro 392 and have been having trouble off and on with erratic fuel pressure lately. I changed the fuel filter and went for a test drive. At first it was fine and after about 3 miles I lost pressure and it died. The lift pump will not cycle at all now. Help.
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Old 01-06-2009, 10:09 AM
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it seems like your LP gave up
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Old 01-06-2009, 10:12 AM
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ULSD has not been kind to the Walbro setups.
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Old 01-06-2009, 03:07 PM
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Mine started acting up with fluctuating pressure for a couple weeks. I didn't mess around too long and replaced it with a Raptor. Left the Walbro right next to the Raptor as a backup, just in case.
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Old 01-06-2009, 04:44 PM
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Have you checked the Walbro Pre-Filter to make sure it's not totally clogged?
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Old 01-06-2009, 05:18 PM
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I just changed the pre filter about 500 mile ago. I will change it when I install the new one. I put my volt meter on it then bumped the ignition to cycle the pump. I had voltage but no pump action. I ordered one from E-bay yesterday AM and it came today so when it warms up I will install the new one. Wish me luck.
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Old 01-10-2009, 04:45 PM
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I replaced my Walbro pump with a new one and my truck works fine. I opened up the old one and one brush was bad and gone. Hope this is not a common problem. The old one is about 2 years old.
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