If your car will not start but will crank over then this will tell you
where the problem is. An engine needs 3 things to run. Fuel, air, and
spark. The way to tell if it is a fuel problem is to take starting
fluid and spray in the air cleaner. And if it starts, then it is a fuel
problem. Usually a fuel pump, fuel pump relay, or the fuel filter. If
it does not start. Then the next thing to check is spark. If you have
no spark then it could be several different things. But then you will
at least know it is something to do with the electrical system. There
are some cases where the timing belt jumps a tooth and makes the timing
off where you will get spark and the car still won't start. Usually in
this case the car will start, but backfire and run terrible. If you
have fuel and spark then it could be the air filter dirty, mass air
flow sensor, or something to do with air. I hope that this helps!
Well, you need 3 things for an engine to run; air, fuel and spark. Air from the air ducting through the air filter, the fuel from the pump usually in tank to fuel filters {pressurized} into the injectors for fuel. Spark is a bit trickier; you have a cam sensor, crank sensor, coil packs, spark plugs. There are more components in each of these 3 classes so unless you are familiar; it's best to take it to a mechanic.
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