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Posted on May 18, 2011
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Engine cranks, fuel pressure ok, plugs spark but does not start.

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Anonymous

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  • Expert 252 Answers
  • Posted on May 18, 2011
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Joined: May 05, 2011
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Hello first

Well in my years i have dealt with alot of no start issues but your sounds like a faulty crankshaft position sensor. that senors controls when to fire spark and to what cylinder to fire spark to.

Also the camshaft position sensor does the same thing they work hand in hand i would start with
the crank sensor first as its normally cheaper.

I hope this helps you if so can you please leave 4 thumbs up it helps me continue to help you all

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2001 ford f150 sparkplug shot out of cylinder head drove it until engine shutoff replace spark plug crank and cam chaft sensor but engine cranks and wont start fuel pressure ok theft light flashes
if it blew out your spark plug then you have a lot of engine pressure probably from blow by or a broken head gasket between pistons.
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Mar 06, 2017 • Ford F-150 Cars & Trucks
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Engine cranks but won't start. Spark plugs are good, Fuel pump pressure is ok. All fuses are good, all relays are good. Sometimes, engine almost start.
hI, IT COULD BE ONE OF THE IGNITION COILS AS THEY ARE IGNITION AMPLIFIER'S TO BOOST THE SPARK.
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Apr 25, 2016 • 1998 Toyota Tercel
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Why won't 96 grand am start ate being wrecked?
You will have to determine if the vehicle has spark as well as fuel pressure. Pull a plug wire off and ground it over the engine. Crank the engine and it should spark. If spark is ok, you will most likely have a fuel supply issue. You will need to hook a fuel pressure gauge to the fuel rail test port to determine if pressure is available. If no pressure suspect a fuel pump or power/ground supply issue to it
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Dec 06, 2015 • 1996 Pontiac Grand Am
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My 1999 Chevy Suburban K1500 cranks; but will not start.
You have to determine whether there is no fuel supply or no spark supply. Disconnect one plug wire and ground it to the engine and crank the vehicle. There should be a visible spark and snapping heard. If spark ok check fuel pressure on the fuel rail with a guage. Should be 55-60lbs.
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Apr 11, 2015 • Cars & Trucks
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Engine cranks but wont start
1st thing is check to make sure you are getting spark to your spark plugs. If no spark then it is either your coil pack or engine control module. If you have spark, check your fuel pressure at your fuel rail. If you do not have good pressure than it is probably your fuel pump.
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Apr 07, 2014 • 1999 Ford Explorer
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2004 trailblazer doesn't start on first try. It cranks and eventually starts but usually 3-6 tries. Once started it runs fine. I have no check engine light. We have replaced the spark plugs, b
For engine to run it has to have:
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So if it doesn't start, something's missing.
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Jan 10, 2018 • 2004 Chevrolet TrailBlazer
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Van cranks but will not start
Hi, 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.

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.

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.

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.
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Dec 22, 2010 • 1996 Chrysler Town & Country
3helpful
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My vw will crank but will not start running i
Hi,


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 Schroeder 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.


Thank you!!
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Jun 30, 2010 • 2001 Volkswagen Passat
10helpful
3answers

"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..
Read full answer
Aug 27, 2009 • Chevrolet Camaro Cars & Trucks
0helpful
2answers

The engine is cranking want start
check for fuel .? spray staring fluid into throtle body then crank if engine runs then stalls you have fuel related problem ( fuel pump) if no start you have ignition problem ( coil or distributor check for spark use a screw driver insert into spark plug wire at spark plug end hold about 1/4 away from gronded engine and crank engine see if spark jumps gap if no spark could be coil or crank sensor
Read full answer
Feb 26, 2009 • 1993 Subaru Impreza
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2001 ford f150 sparkplug shot out of cylinder head drove it until engine shutoff replace spark plug crank and cam chaft sensor but engine cranks and wont start fuel pressure ok theft light flashes

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