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Re: 03 GMC 8.1 coil packs
Changed the fuel pressure regulator yesterday. When I pushed the valve on the fuel rail to relieve the pressure it had a ton on it. What was different. When I pulled the old regulator the bowl filled up with gas. I dried it out and it did it again. Put the new one in worked fine yesterday. This morning the same thing. started right up ran for 30 minutes. went inside came back hour later didn't want to start. finally did and I smelled gas. It finally gave me one code for bank one senor one oxygen sensor.. haven't changed it out yet. Cleared the code to see if it would do it again but it has not
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