Normally when they go bad they wont give enough pressure to try to start. The motor will just turn with no firing. You can check it with the fuel pressure gauge. That would eliminate the fuel system anyway… there could be many other things wrong with it though… from a clogged catalytic converter to a bad knock sensor to a clogged fuel pump. The trick it to eliminate the most common problems first. Check the filter, then the pressure in the fuel system…
Choke vacuum kick setting too wide
Fast idle RPM too low
Fast idle cam index incorrect
Vacuum leak
Bad Fuel Pump
To check fuel pump:
1. Turn on the key to the ignition position but dont start the car
2. If you hear the fuel pump whining up for a second or two, the fuel pump motor is operating ok. Next step is to check the fuel pressure at the fuel rail if its fuel injected. If you have a carburetor, then you need to check your Carb’s Float Settings.
2a. If you do NOT hear your fuel pump kick in, then check your fuel pump electrical connections, fuses and also check fuel pump relay (located in power distribution center located under black cover in engine compartment
). The fuel pump relay should click when turning on ignition.
3. Remove the fuel pump assembly and make sure the pickup tubes and the supply lines are attached correctly.
4. Its also possible that you have a bad fuel pump even though its new and/or your fuel rail has blockage
{ 4 comments… read them below or add one }
It could be… check the fuel pressure with a fuel pressure gauge
you test it with a fuel pressure gage
Normally when they go bad they wont give enough pressure to try to start. The motor will just turn with no firing. You can check it with the fuel pressure gauge. That would eliminate the fuel system anyway… there could be many other things wrong with it though… from a clogged catalytic converter to a bad knock sensor to a clogged fuel pump. The trick it to eliminate the most common problems first. Check the filter, then the pressure in the fuel system…
it could be many things:
Choke vacuum kick setting too wide
Fast idle RPM too low
Fast idle cam index incorrect
Vacuum leak
Bad Fuel Pump
To check fuel pump:
1. Turn on the key to the ignition position but dont start the car
2. If you hear the fuel pump whining up for a second or two, the fuel pump motor is operating ok. Next step is to check the fuel pressure at the fuel rail if its fuel injected. If you have a carburetor, then you need to check your Carb’s Float Settings.
2a. If you do NOT hear your fuel pump kick in, then check your fuel pump electrical connections, fuses and also check fuel pump relay (located in power distribution center located under black cover in engine compartment
). The fuel pump relay should click when turning on ignition.
3. Remove the fuel pump assembly and make sure the pickup tubes and the supply lines are attached correctly.
4. Its also possible that you have a bad fuel pump even though its new and/or your fuel rail has blockage