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Well there's a few things causing fuel problems----roll over switch(no pump function)---pressure sensor and or pressure regulator sending info to ECM(no pump function)---bypass regulator(that sends excess fuel back to tank) maybe wide open--gas just going in a circle not building up pressure---since it runs on starting fluid it's defiantly fuel supply issue
First check for at sparkplugs if you have spark then check the fuel pressure it should be 55-61 with key on and engine off.If not within specs replace fuel pump and filter.
well you narrowed it down to a fuel problem. not sure about your model, but most cars have a fuel pressure regulator on the fuel rail to reduce un needed pressures. that could possibly be bad. its cylinder in shape and has a vacuum hose connected to it. check the hose and that unit.
Flel regulator will only affect max fuel pressure only will not cause it to not start. try replacing fuel filter first if still does not get fuel then you need to see if it is fuel related or if you have a spark at the spark plugs, pull off a spark plug boot and put screw driver in it hold 1/4 inch away from bare metal and crank engine if you get a spark then it's fuel relateed if no fuel it can be the crank shaft sensor or the cam shaft sensor. let me know if it has fire.
This could be a lot of things,fuel pump pressure not enough(new fuel pump)or spark plugs and air filter need to be replaced(flooded plugs and air filter stopping up)timing has jumped,or maybe a blocked fuel filter?
You have mentioned that you replaced the O2 sensor. The oxygen sensor is completely ignored by the engine computer while the car is starting, and doesn't come into play at all until the engine warms up completely. Are you sure you have a fuel pressure problem? If so, replacing the O2 sensor would not have any affect.
To be sure you have a fuel pressure problem, you need to measure it. This car does not have a fuel pressure test port, so you need an inline fuel pressure test gauge. To test the pressure, connect an in-line gauge and switch
your ignition switch to the "run" position. (Do not start the engine.) The fuel pump should run
for two seconds. During this time when the engine is not running, you
should have between 41 and 47 PSI of fuel pressure. If you start the engine, the fuel pressure should drop somewhat at idle (maybe somewhere closer to 28-35 PSI). Fuel pressure is regulated according to intake manifold vacuum, so at idle, it should be fairly low, while at higher throttle settings, it should be higher.
From what I gather, your car cranks for a long time before starting. If you suspect low fuel pressure, a defective fuel pump relay could cause that condition. The relay is located in a relay/fuse box under the hood on the driver's side of the car. If the relay fails, the fuel pump can still be energized by the engine oil pressure switch. This switch closes when engine oil pressure reaches ~4PSI. If your engine is not producing 4PSI of oil pressure while cranking, or if it takes a while to reach 4PSI, that would explain your problem.
change the fuel filter or check the pressure regulator b trying to start car then pull the rubber fuel line from regulator if anything drips out in the least change it...cheap and easy
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