madellous
Probationary Member
- 5
- 1
- Oct 22, 2018
-
Croydon,
Pennsylvania
Hello everyone. I first want to thank everyone for the extensive amount of information available on this site and through the community. I am a GM guy but recently took on a 96 GSX as a project to help a friend get it running again. Through the info on this site I was able to rebuild the entire top end of the engine. Here is my issue with a little background:
The vehicle is a 96 GSX with a 6 bolt swap. Car sat for several years after it turned off randomly one day. Turns out it skipped timing and trashed all the valves. I replaced the head and got it running again a few weeks ago. However, it had only been started a couple times since it had an oil leak I had yet to chase down. It would start with no problem.
Now, the fuel pump (being told it may be Walbro 450, definitely an aftermarket pump) does not turn on (no audible sound or pressure at the fuel pressure gauge). I tried the check connector in the engine bay as well as activating it in DSMLink, neither turned the pump on. I have power at the connector in both situations across both grounds, so I assume the circuit is good. I quickly tried to hook the pump up to power directly and it did not turn on, but it was late so I wasn't sure if I didn't have the leads all the way connected or if I was on the correct pins. The pump was replaced about a year ago but has less than an hour of use on it. It worked just fine a few weeks ago when the car was starting. The only thing I did differently was I pushed the car out of my garage since it won't go into reverse. Ever since then, the pump has not worked.
The only other thing of note is that the fuel tank has fuel in it but it was low. Is it possible that the low fuel caused a relatively new pump to run hot enough to burn out? At no point was the fuel low enough to not start the car. Is there anything on the pump assembly that I could look at/repair?
Any help/insight is appreciated. My next step is to remove the pump and try to test it on the bench. What pins need to be jumped to turn the pump on?
The vehicle is a 96 GSX with a 6 bolt swap. Car sat for several years after it turned off randomly one day. Turns out it skipped timing and trashed all the valves. I replaced the head and got it running again a few weeks ago. However, it had only been started a couple times since it had an oil leak I had yet to chase down. It would start with no problem.
Now, the fuel pump (being told it may be Walbro 450, definitely an aftermarket pump) does not turn on (no audible sound or pressure at the fuel pressure gauge). I tried the check connector in the engine bay as well as activating it in DSMLink, neither turned the pump on. I have power at the connector in both situations across both grounds, so I assume the circuit is good. I quickly tried to hook the pump up to power directly and it did not turn on, but it was late so I wasn't sure if I didn't have the leads all the way connected or if I was on the correct pins. The pump was replaced about a year ago but has less than an hour of use on it. It worked just fine a few weeks ago when the car was starting. The only thing I did differently was I pushed the car out of my garage since it won't go into reverse. Ever since then, the pump has not worked.
The only other thing of note is that the fuel tank has fuel in it but it was low. Is it possible that the low fuel caused a relatively new pump to run hot enough to burn out? At no point was the fuel low enough to not start the car. Is there anything on the pump assembly that I could look at/repair?
Any help/insight is appreciated. My next step is to remove the pump and try to test it on the bench. What pins need to be jumped to turn the pump on?
