If you let it warm to normal operating temp an shut it off does it still just crank an not start an run ? What's the fuel pressure ? Did you hook up a professional scan tool an view data parameters - Fuel trims ,short an long term . Are the O2 sensors switching normally ? What's the Mass air flow sensor data ? Your best bet ,take it to a qualified repair shop that knows how to test .
Wet plugs ar flooded plugs , indicates a problem with injector control
change the ECM unit and check the fule pressure regulator
could be the fuel pressure regulator is running to high and so the pressure is bypassing the injector needles into the manifold
SOURCE: 1992 Corvette cranks over but will not start.
Your Starter Brushes are worn down to far to Kick her Over. Replace that Starter and you Should be Good. Let me Know!
SOURCE: HOW TO CLEAN '94 BUICK CENTURY 3.1 EGR VALVE ..I
to properly clean and test the egr valve you should remove it from the car. disconnect vacuum, elect connectors, and check the gasket surface both on the manifold and on the base of the valve. you will need to buy or cut a new gasket most likely. when you apply vacuum to the control inlet, you should see the valve lift away from the seat. I use brake cleaner and compressed air to spray clean and blow out the valve just to test it and then go from there depending on what you find ---- one of the vacuum switches that controls it or a faulty vacuum line is a likely possibility also ---- so you should check them also. a vacuum pistol comes on really helpful here.
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: 2006 pontiac torrent shut down car will just crank, not start
The factory alarm is not to be tampered with as you can reset it but not disconnect it as it's part of the main fuel injection system. Do you have the right key? Just because it turns and cranks doesn't mean it has the right code. the security light off with the key on ut not cranking? If it stays on you do have a security problem. The system can be reset ( if the battery is good, and hot. Trun the key to crank and letgo the security light will but on or blinking . Leave the key on till the light goes out (around 15 minutes. Once it's out turn the key off then back on and the security light will be back on again. again wait till it goes out turn off then on again till the light goes out. Now turn the key off wait a few seconds trun it on and crank the engine. If it starts then it's reset. Sometimes I've had to do this more than three times to get it to reconize the key as the right one. rember a store cut key won't ever work as it doesnt have the (brain in it the the factory key does. Lets say your wrong, about the security system. The fuel pumps go bad like crazy and its thier season to fail. They fail quicker if you $5 the car alot. (runing on empty) Was the check engine light on as it ran the last time it was running? If so the codes need to be retieved and repaired. A scanner will find the security enabled on too.
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