Engine cranks but won t start. i changd fuel pump. I had to replace steering column becaue theft i cranked and cut off whats the problem please help me
An engine spinning just means your battery is good and starter works. You'll need to find out if you're getting the other things you need. Those being air, fuel, and spark.
For air, take the air filter out of the picture by removing the air flow going to the carb. Try to start the car.
if it doesn't start, for Fuel, try spraying into the carb some starting fluid then try starting the car. Does it run for a little bit with the starting fluid you just sprayed in there? If so, you've probably got a fuel problem.
If the engine still won't start, take one spark plug out and keep the spark plug wire attached to it. Make sure the spark plug is touching metal so it's grouned electrically, like laying against the engine block. Don't hold the spark plug because you can get a good shock if you hold it wrong. Just lay it on the engine block. Ttry starting the engine and watch for spark at the end of the spark plug. Sometimes the spark is hard to see so doing this at night or in a garage will make it easier to see the spark which leads me to another point. Sometimes your sparkplug wires get so old they electrically aren't any good anymore. You'll be able to know that if you start your car at night and you look under the hood and see little sparks jumping from your spark plug wires to ground. This means your spark plug wires need replacing and that could be your problem. Usually the engine will run when this happens but it won't run very good as most of the spark is being shorted out.
So try to isolate where the problem is...Air, Fuel, or Spark and go from there.
SOURCE: "Cranks, but won't start". Replaced fuel pump, CKP, ICM & nothing
If the engine
cranks over normally when you attempt to start you car, but the engine
does not start, the problem may be NO FUEL, NO SPARK or NO COMPRESSION.
The engine needs adequate fuel pressure, a properly timed spark and
normal compression to start.
1) To find why the engine won't
start, remove the air inlet tube from the throttle body, push the
throttle open and spray a small amount of aerosol starting fluid into
the engine. Crank the engine. If it has spark and compression but NO
FUEL, it will start and run a few seconds before dying. If it does NOT
start, it probably has NO SPARK.
2)Another method to check for spark is to pull a spark plug wire
off of a spark plug (if it has plug wires, coil-on-plug ignitions do
not) and place the open end of the plug wire near a metal surface on
the engine. Have a helper crank the engine while you watch for a spark.
DO NOT hold the wire while doing this as it can shock you. If you see a
spark, the problem is not spark, but most likely NO FUEL or NO
COMPRESSION. If you do not see a spark, the problem is in the IGNITION
CIRCUIT.
3)Proper fuel pressure is critical for fuel injected engines
to start and run. You should hear the fuel pump inside the fuel tank
buzz for a couple of seconds when the ignition is turned on (no buzz
means the pump is not running and the engine is not getting fuel). You
can smell the tailpipe for gasoline vapors after cranking the engine.
If you smell gas, the problem is likely not fuel but NO SPARK. You can
also remove the plastic cap and press the schraeder valve test fitting
on the fuel rail to see if there is any fuel pressure to the engine
(not a very accurate test because fuel pressure must be at a certain
level for the engine to start, for that you need a gauge). Even so, no
fuel at the fuel rail would tell you fuel is not getting to the engine..
SOURCE: 98 chevy cavalier cranks but wont start changed
try to start the car, than the anti theift would shut the car off. you wait ten min with the key on, until you see the anti theift flash or disapear. than turn key to off position and try to start it. this will reprogram the computer.. Good luck.
you can also try disconnecting the battery for 30 minutes
SOURCE: 1999 mercury cougar. won't start...cranks...battery ok.
V6 ? 4CYL? Have you verified SPARK? Did anyone check the "fuel pump inertia switch?" Its in the right front kick panel. If it was a "Anti-theft Issue" the light would be on or flashing.
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