Trosebe Posted June 11, 2019 Share Posted June 11, 2019 My 2005 suburban 5.3 sometimes will not start. I have put two fuel pumps in it and still same problem. I have hooked up a pressure gauge and left it on the engine. When the vehicle has the no starting problem, there is no fuel pressure. When I release the pressure on the Schrader valve the vehicle starts up every time. Quote Link to comment Share on other sites More sharing options...
CamGTP Posted June 12, 2019 Share Posted June 12, 2019 Has the fuel pressure regulator on the fuel rail itself ever been changed? Quote Link to comment Share on other sites More sharing options...
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