Question about 2004 Chevrolet Suburban

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Replaced motor on 2004 suburban and roll over except not starting

Replaced motor and everything works except for engine starting, rolls over but no fuel to injectors and fire to plug have fuel to rails changed crank and air flow sensor,cam sensor next. old engine started but head was cracked. If one coil bad or one injector bad will computer stop power to these components. Check connections and fuse/relays and seemed ok and all grounds on. What could be the problems and help would be appreciate.

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If one of the coils are bad the computer will send a code that can be read with a scan tool. Check this and also check your fuel pressure reading with a pressure gauge hooked up to make sure you have pressure from the fuel pump. Even if you hear it, it may not be putting out the correct pressure or fuel filter could be clogged, the sock on the fuel pump could be collapsed, or could just have an air lock in the fuel system. Maybe try pulling the air horn on your throttle body and pouring a VERY small amount of gas into it to force fire while you are cranking. Good luck and hope this helps.

Posted on Jul 06, 2010

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Posted on Jan 02, 2017

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