Possible fuel pump issue
#13
Test #1 ignition ON engine OFF, force fuel pump on pressure should be 50-60 PSI
turn pump off
If the pressure decreases by less than 5 PSI in 1 minute the pump is bad.
If it decreases by more than 5 PSI in 1 minute there is a leaking injector.
Test #2
Relieve the pressure to 10 PSI, if the pressure decreases by more than 2 PSI in 5 minutes the fuel pump is bad.
The pump will only run for a few seconds with engine off, so you need to either use a scantool or lie to the relay.
turn pump off
If the pressure decreases by less than 5 PSI in 1 minute the pump is bad.
If it decreases by more than 5 PSI in 1 minute there is a leaking injector.
Test #2
Relieve the pressure to 10 PSI, if the pressure decreases by more than 2 PSI in 5 minutes the fuel pump is bad.
The pump will only run for a few seconds with engine off, so you need to either use a scantool or lie to the relay.
#17
Test #1 ignition ON engine OFF, force fuel pump on pressure should be 50-60 PSI
turn pump off
If the pressure decreases by less than 5 PSI in 1 minute the pump is bad.
If it decreases by more than 5 PSI in 1 minute there is a leaking injector.
Test #2
Relieve the pressure to 10 PSI, if the pressure decreases by more than 2 PSI in 5 minutes the fuel pump is bad.
The pump will only run for a few seconds with engine off, so you need to either use a scantool or lie to the relay.
turn pump off
If the pressure decreases by less than 5 PSI in 1 minute the pump is bad.
If it decreases by more than 5 PSI in 1 minute there is a leaking injector.
Test #2
Relieve the pressure to 10 PSI, if the pressure decreases by more than 2 PSI in 5 minutes the fuel pump is bad.
The pump will only run for a few seconds with engine off, so you need to either use a scantool or lie to the relay.
#19