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check for fuel pressure/ and then check to see it its fireing. no fire could be a coil pack or/ computer. no fuel could be fuel pump or filter or injector pulse.
with an n14 it more than likely is an injector .. it could be air in line or turbo boost sensor but more oftenthan not its the injector
Your fuel filter could be clogged up or you could need a new fuel pump.
it could litteraly be anything, from a bad sensor, to a stuck injector, to low air in your tires. have the code scanned, its cheap and can usually tell you whats wrong
If is has spark, it could be a faulty fuel injector.
AnswerFuel injectors are not opening. They open by electrical pulse from the ecu. You could have a short, a broken wire, perhaps a bad fuse or the ecu could be defective.You also might have a bad crack sensor on the front of the engine. ECU doesn't know the position of the cylinders therefore no activity to fuel injectors etc...
You need 4 things for an engine to run. An unobstructed air source, compression, good fuel at the right time, strong spark at the right time. You are missing one or more of those things. If the engine is spinning over real fast without any resistance, you might have no compression, which could be due to the timing belt having jumped time. You could have no fuel pressure, due to a bad fuel pump. You could have no spark due to a bad coil. You could have no injector pulse due to a bad PCM or some other problem with the engine control system. Check air intake, fuel and fuel injector pulse, spark, and compression. Find out what you are missing, and you will be able to narrow it down to what sub-system is causing the problem.
you need to get the computer realigned by a technician to match the motor you installed
i think no, because dtc p0300 comes when the engine misfired detected, engine tune up and injector cleaning are need to perform when this dtc p0300 was set
Nope, don't think so, but I COULD be wrong, but I don't think I am. So just stick with no! Why?
Hand brake? I thought the last GMC with a hand brake was in 68, but I could be wrong.
Try swapping the coil with another cylinder. If that doesn't work, use a noid light to check for fuel pulse at the injector wiring connector and a 12V test lamp to check for pulse at the coil electrical connector. If none of this helps, do a compression check. If compression reads normal, check your fuel trims for positive trim at idle indicating a vacuum leak, and check for a vacuum leak at intake gaskets.