If car sits more than 6 hrs it will crank but not start. If the gas pedal it pushed to the floor it starts. If the car is warmed up it starts fine. Replaced purge valve and still same problem.
If car sits more than 6 hrs it will crank but not start. If the gas pedal it pushed to the floor it starts. If the car is warmed up it starts fine. Replaced purge valve and still same problem.
If you smell gas when this happens its flooded...may be a no spark issue also.
When you push the pedal to the floor it goes into clear flood mood. So if it starts when you do this I would think that your car is flooding. Maybe bad FPR that is leaking when it sits, I know there was an issue like this with the impalas a few years back. You should be able to take the vacuum hose of the FPR while it's running and it might take a few minutes but if it is leaking you should smell or see fuel. But if it will start when you push the pedal to the floor I would be checking for things that would cause a flood situation.
If car sits more than 6 hrs it will crank but not start. If the gas pedal it pushed to the floor it starts. If the car is warmed up it starts fine. Replaced purge valve and still same problem.
Put a gauge on the fuel rail port to check pressure during a cold start. Range should be 50-60psi. A stuck-open purge valve usually pops a code & typically only causes flooding immediately after refueling.
When you push the pedal to the floor it goes into clear flood mood. So if it starts when you do this I would think that your car is flooding. Maybe bad FPR that is leaking when it sits, I know there was an issue like this with the impalas a few years back. You should be able to take the vacuum hose of the FPR while it's running and it might take a few minutes but if it is leaking you should smell or see fuel. But if it will start when you push the pedal to the floor I would be checking for things that would cause a flood situation.
They don't use separate regulators anymore. They are built into the pump assy.
Floored gas pedal to get it to start is a symptom of a leaky injector. Leak down test is the diagnosis for that. Fuel pressure gauge attached and seeing how long it holds pressure is the test. Don't know if there is a pressure port on your car though, someone more familiar will know that.
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Floored gas pedal to get it to start is a symptom of a leaky injector. Leak down test is the diagnosis for that. Fuel pressure gauge attached and seeing how long it holds pressure is the test. Don't know if there is a pressure port on your car though, someone more familiar will know that.
I just looked in the service manual and the 2.4 and 3.6 should have a service port schrader valve.
What is normal for time for the fuel pressure leak down test? Minutes or hours and how much of a drop is normal?
Is a leaky injector something that can be fixed with a good fuel injector cleaner(like what the dealers use) or do you just replace the injector?
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