What size engine is in there? And you may still have a fuel issue. Would need to do a fuel pressure bleed down test.
6 cylinder I had a pressure test they said it would lose pressure and not sure why
That is the reason. Fuel pressure should check 56 to 63 lbs. Fuel pressure should not bleed of more than 5 lbs in 3 minutes. So that is the 4.3L V6 vortex engine. You are going to have to replace the fuel injectors, spider lines, and the fuel pressure regulator as a unit for lasting results. These have ben re-designed.
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