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Cylinder Knocking Noise Injector nozzles sticking open Test injectors, see FUEL SYSTEMS Very low nozzle opening pressure Test injectors and/or replace Loss of Engine Power Restricted air intake Remove restriction EGR valve malfunction Replace EGR valve Blocked or damaged exhaust system Remove restriction and/or replace components Blocked fuel tank filter Replace filter Restricted fuel filter Remove restriction and/or replace filter Block vent in gas cap Remove restriction and/or replace cap Tank-to-injection pump fuel supply blocked Check fuel lines and connections Blocked fuel return system Remove restriction Incorrect or contaminated fuel Replace fuel Blocked injector nozzles Check nozzle for blockage, see FUEL SYSTEMS Low compression Check valves, rings, pistons, see ENGINES Loud Engine Noise With Black Smoke Basic timing incorrect Reset timing, see FUEL SYSTEMS EGR valve malfunction Replace EGR valve Internal injection pump malfunction Replace injection pump, see FUEL SYSTEMS Incorrect injector pump housing pressure Check pressure, see FUEL SYSTEMS Engine Overheating Cooling system leaks Check cooling system and repair leaks Belt slipping or damaged Check tension and/or replace belt
2008 Chevrolet Silverado 1500 GENERAL INFORMATION Trouble Shooting - Basic Procedures
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