A car that cranks over but doesn't start, in many cases will be
due to a bad fuel pump, a broken timing belt, an inoperative cam sensor or
crank sensor. Also this problems are related to faulty spark plug. Check the
spark at spark plugs when you start the car. Do you notice any spark. Actually
you should see. If in case there is no spark then it's a spark plug problem.
Also the coil pack gives power to spark plug. So check the voltage at coil pack.
It will show 12 volt.If there is no voltage noticed at coil pack then its
faulty coil pack that has to be replaced.If all the possible options checked
out ok then check the car starter. The starter gets power from battery to start
the care. If the starter is faulty then it will not let the car to start. Also
check and confirm that there is fuel in the car. If it very low fuel then in
some cases this causes the problem. Also check and confirm that fuel pump is
functioning properly and the fuel filter is not clogged. One of the easiest
ways to check for a fuel pump related problem is to spray a little starting
fluid into the air intake while trying to start the car. If the car starts
momentarily, then there's a good chance the fuel pump is not working or the car
is out of gas. You can also listen for the fuel pump's humming sound when the
key is first turned on. Also if a inoperative fuel pump is suspected, a good
technician will always check to verify there is power and ground being supplied
to the pump, to eliminate the possibility of a bad relay or electrical issue.
Fuel pressure can be checked with a pressure gage and if there is pressure,
pulse can be checked at the fuel injectors in several ways including the most
common, with the use of noid lights. If the injectors don't have pulse the
engine won't start. ---------- This troubleshooting tips will help you to solve the
problem.Thanks.Helpmech.
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