1.6 Miata wont run after replacing head gasket
#4
I replaced it because I'm going turbo so I figured I replace it know while its NA so I wont blow the OEM one and have to pull more things off to replace it while its turbo, I didn't compression test it it was running really good had no problems until now, I'll test it tomorrow and let you know what the numbers are.
#6
I watched your video , I think the fuel pump is only coming on for the cranking part of the cycle . Can you verify that the fuel pump is continuing to running after the starter is disengaged . There is a switch in the MAF that is suppose to send power to the pump once the car starts . You should be able to jumper it at the diagnostic connector under the hood. Fredb
#7
I watched your video , I think the fuel pump is only coming on for the cranking part of the cycle . Can you verify that the fuel pump is continuing to running after the starter is disengaged . There is a switch in the MAF that is suppose to send power to the pump once the car starts . You should be able to jumper it at the diagnostic connector under the hood. Fredb
#8
You have power, then it goes through a relay, then through the AFM or maybe AFM then relay....don't recall exactly
when the ignition goes on.....you should be able to hear the fuel pump hiss. On the NA6's.....it should always run. (Unlike the NA8 & after.) or unless you have an aftermarket ECU where this setting has been changed. (thats the way I recall it. If someone knows for sure please correct me)
when you connect Grnd & F/P it should run regardless. As soon as the ignition is switched on
this process bypasses the AFM.
If the pump doesn't run, it could be
1.Faulty Relay
2.Faulty Fuel pump.
3.faulty wiring on the fuel pump harness
4. any combination of the above
The AFM has an emergency mechanism which stops the fuel pump from running in case of an accident. It may be faulty if you are not getting fuel.You are bypassing this mechanism with this process.
If the pump runs with GRD & F/P connected , but doesn't normally. You know its the AFM.
Ive had 3 scenarios. faulty pump harness wiring, Faulty pump (intermittent) & faulty relay.
never had a faulty AFM.
Pumps can also become intermittent. if you hit the rear deck with your hand and it starts to work again. You know the pump is becoming toast.
#12
it should.
You have power, then it goes through a relay, then through the AFM or maybe AFM then relay....don't recall exactly
when the ignition goes on.....you should be able to hear the fuel pump hiss. On the NA6's.....it should always run. (Unlike the NA8 & after.) or unless you have an aftermarket ECU where this setting has been changed. (thats the way I recall it. If someone knows for sure please correct me)
when you connect Grnd & F/P it should run regardless. As soon as the ignition is switched on
this process bypasses the AFM.
If the pump doesn't run, it could be
1.Faulty Relay
2.Faulty Fuel pump.
3.faulty wiring on the fuel pump harness
4. any combination of the above
The AFM has an emergency mechanism which stops the fuel pump from running in case of an accident. It may be faulty if you are not getting fuel.You are bypassing this mechanism with this process.
If the pump runs with GRD & F/P connected , but doesn't normally. You know its the AFM.
Ive had 3 scenarios. faulty pump harness wiring, Faulty pump (intermittent) & faulty relay.
never had a faulty AFM.
Pumps can also become intermittent. if you hit the rear deck with your hand and it starts to work again. You know the pump is becoming toast.
You have power, then it goes through a relay, then through the AFM or maybe AFM then relay....don't recall exactly
when the ignition goes on.....you should be able to hear the fuel pump hiss. On the NA6's.....it should always run. (Unlike the NA8 & after.) or unless you have an aftermarket ECU where this setting has been changed. (thats the way I recall it. If someone knows for sure please correct me)
when you connect Grnd & F/P it should run regardless. As soon as the ignition is switched on
this process bypasses the AFM.
If the pump doesn't run, it could be
1.Faulty Relay
2.Faulty Fuel pump.
3.faulty wiring on the fuel pump harness
4. any combination of the above
The AFM has an emergency mechanism which stops the fuel pump from running in case of an accident. It may be faulty if you are not getting fuel.You are bypassing this mechanism with this process.
If the pump runs with GRD & F/P connected , but doesn't normally. You know its the AFM.
Ive had 3 scenarios. faulty pump harness wiring, Faulty pump (intermittent) & faulty relay.
never had a faulty AFM.
Pumps can also become intermittent. if you hit the rear deck with your hand and it starts to work again. You know the pump is becoming toast.