fuel buss shuts off

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   Well, the easy stuff got checked, now you're dealing with things like the PIP sensor in the distributor or in the worst case scenario the ECM itself may have a problem.
The PIP sensor, senses that the engine is running and sends a signal to the ECM and the ECM says OK and keeps the power supplied to the fuel pumps so it stays running. No signal = no run.

I'd pull the distributor cap off and see if it looks like there are any broken pieces rattling around..

Since replacing a PIP involves distributor disassembly to do it, most people get a new distributor.

Right about now without having a bunch of diagnostic tools, you're into throwing parts at the problem.

You'll find plenty of threads here on CCF, where lots of parts are thrown at gt40 issues   

You sure the kill switch is OK, you jumpered the terminals on the back to bypass the switch?

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KENO Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11155	Post Options Post Reply Quote KENO Report Post Thanks(0) Quote Reply Topic: fuel buss shuts off Posted: July-27-2023 at 7:12am
	Well, the easy stuff got checked, now you're dealing with things like the PIP sensor in the distributor or in the worst case scenario the ECM itself may have a problem. The PIP sensor, senses that the engine is running and sends a signal to the ECM and the ECM says OK and keeps the power supplied to the fuel pumps so it stays running. No signal = no run. I'd pull the distributor cap off and see if it looks like there are any broken pieces rattling around.. Since replacing a PIP involves distributor disassembly to do it, most people get a new distributor. Right about now without having a bunch of diagnostic tools, you're into throwing parts at the problem. You'll find plenty of threads here on CCF, where lots of parts are thrown at gt40 issues You sure the kill switch is OK, you jumpered the terminals on the back to bypass the switch?

Falcon1986 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: October-02-2007 Location: United States Status: Offline Points: 10	Post Options Post Reply Quote Falcon1986 Report Post Thanks(0) Quote Reply Posted: July-26-2023 at 12:44pm
	Yes

KENO Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11155	Post Options Post Reply Quote KENO Report Post Thanks(0) Quote Reply Posted: July-26-2023 at 12:25pm
	Next thought or question. When you go from Off to the Run position with the key, do you hear the fuel pumps come on for a couple of seconds and then shut off? I'd figure the answer will be Yes, since it actually starts when you go to Start with the key.

Falcon1986 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: October-02-2007 Location: United States Status: Offline Points: 10	Post Options Post Reply Quote Falcon1986 Report Post Thanks(0) Quote Reply Posted: July-26-2023 at 9:51am
	Thanks. Checked and it's not the kill switch. Any other thoughts? Thanks

KENO Members Profile Send Private Message Find Members Posts Add to Buddy List Grand Poobah Joined: June-06-2004 Location: United States Status: Offline Points: 11155	Post Options Post Reply Quote KENO Report Post Thanks(0) Quote Reply Posted: July-26-2023 at 7:39am
	Have you checked your kill switch/safety lanyard? Bad kill switch it'll start and run for a couple seconds. The lanyard being attached doesn't necessarily mean the switch is working. I'd jumper across the 2 terminals on the switch and then see if it starts and stays running. There's other stuff to check, but this is a start

Falcon1986 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: October-02-2007 Location: United States Status: Offline Points: 10	Post Options Post Reply Quote Falcon1986 Report Post Thanks(0) Quote Reply Posted: July-25-2023 at 11:50pm
	97 ski nautique, starts fine for a few seconds then the fuel pump buss shuts off the fuel and engine stops. Do you know what is causing this? Thanks
	Falcon1986

fuel buss shuts off

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