It takes hell of a time to start in the morning and any time of the day. I have changed the fuel pump, fuel injectors, spark plugs, HT Coil and cables from distributor to spark plugs, ICU. All shows functioning well, but it takes 15 to 20 minuits to start every time the egnition is switched off. Fuel distributor/divider shows functioning well with fuel flowing through. Could you tell me where the problem lies.
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First thing in the morning, key on engine off, did you check proper fuel pressure before you changed anything? Do you have proper fuel pressure after changing the pump?
Cycling the key several times before you crank it, helps to pressurize the fuel system. Also, if you have the spider fuel system, that system is noted for problems. There maybe some service bulletin regarding cleaning the fuel poppet valves. Hard start in the morning, starts fine rest of day. The cleaning procedure I saw, was a shop procedure.
Sounds like you are loosing fuel pressure overnight. Since it takes 70+ psi to start and run, if you have zero pressure in the morning, it would take a long time of cranking to get the pressure back up.
If it is low or no pressure, the problem could be a faulty check valve in the fuel pump.
A common cause is a faulty check valve in the pump. The check valve prevents fuel pressure from draining back into the tank. The pump gets power from the relay for only 3 seconds during crank which would not be enough if the fuel line has zero pressure. You could cycle the key on and off a few times and probably start it quicker if that is the problem.
Have the fuel pressure checked after sitting overnight.
Its faulty fuel pump and clogged fuel filter.In your vehicle the fuel pressure is low,due to this faulty fuel pump and clogged fuel filter,so its not starting.But it starts when you spray liquid in intake.The liquid directly goes to engine so vehicle starts.Replace the fuel pump and filter.This will help.Thanks.Helpmech.