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Old 08-22-2019, 02:02 PM   #1 (permalink)
rickbat
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Join Date: Aug 2019
Location: Export PA
Posts: 11

LB7 Throwing P1093 Fuel Rail Pressure Low during power enrichment

Recently purchased a 2002 Duramax with tons of issues so far. I have most squared away but im getting a P1093. I'm running autoenginuity Scanner to monitor Desired vs actual fuel rail pressure. I can see the truck is asking for 21000 at WOT and only betting about 8000.

Mods:
Stock truck to the best of my knowledge.

Things i have already done:
1. Replaced the MAF
2. Replaced FPR
3. Replaced PRV with race plug
4. Replaced rubber lines on the 1/2 fuel feed line.
5. Checked lines coming to and from fuel filter.
6. Replaced fuel filter

I'm thinking i'm running out of cheap items and iin denial of it maybe an Injector pump issue...? In my past life owning a 60. Powerstroke a dead Injector pump meant no start condition is the Duramax pump that different?

Need some Duramax expertise...

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