Fuel injectors are not getting fuel

SCOOTER1119

MEMBER
1995 OLDSMOBILE 98
3.8L
V6
2WD
AUTOMATIC
180,000 MILES

It does not appear that I am getting fuel to the injectors. There is not any fire getting to the injectors at all. I have replaced the fuel pump, the fuel pump relay's, the crank positioning sensor. Also, the firing module at the bottom of the coil pack.
I have held a rag at the mouth of the intake, with fuel on it, the car will start and run that way, at least until I remove the rag or the fuel source. Could you please help me with my problem?

1 Reply

STEVE W.

MECHANIC
13,452 POSTS

First check fuse seven (ten amp) in the relay center under the hood. Then pick an injector and see if you have twelve volts on the pink wire. They are all fed from one splice and fuse. If no power or low voltage watch the reading and start disconnecting the other injectors. It is possible that you have one or more shorted out and pulling all the voltage down so they do not fire. If you find you do not have power with them all unplugged and the fuse tests good, you will end up tracing the pink wire back through the harness to the relay center to find the problem.
As a test to see if it is the wiring you could run a jumper from one injector pink wire to battery positive. If it now fires up you can trace the voltage loss through that wire. I have seen more than a few vehicles with bad wires under and in the relay centers.