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Car will crank but will not start fuel pump is ok what happend?
Wiki User
∙ 12y ago
There are 4 things necessary for an engine to run.
1)Good fuel, at the proper time (fuel, fuel pump, fuel injectors)
2)Good spark, at the proper time (distributer, plugs, wires, coil)
3)Compression (pistons, valves, timing chain)
4)and an unobstructed air intake source. (air filter, intake manifold)
You are missing one or more of those things. If you are absolutely sure that the fuel pump is giving ENOUGH fuel pressure, that the fuel injectors are working, and that there is good fuel(not full of water), then I would check for spark at the spark plugs next. Figuring out why an engine won't run is a process of elimination. You have to start by elimnating the 4 things listed above, which tells you what you are missing. Once you find what do not have, then you begin eliminating things that would cause you not to have that item, be it spark, compression, etc.For example, if you are missing compression, then the timing chain could be broken, there may be a valve problem, even blown headgasket. If you are missing spark, then there could be a problem with the distributer, coil, plug wires, ignition module, wiring, etc.
Wiki User
∙ 12y ago
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