Boats For Sale:
fuel buss shuts off |
Post Reply 
|
| Author | |
Falcon1986 
Newbie 
Joined: October-02-2007 Location: United States Status: Offline Points: 10 |
 Post Options
 Thanks(0)
 Quote Reply
 Topic: fuel buss shuts offPosted: 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
|
|
 |
|
|
KENO
Grand Poobah 
Joined: June-06-2004 Location: United States Status: Offline Points: 10650 |
Post Options
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
Newbie
Joined: October-02-2007 Location: United States Status: Offline Points: 10 |
Post Options
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
Grand Poobah
Joined: June-06-2004 Location: United States Status: Offline Points: 10650 |
Post Options
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
Newbie
Joined: October-02-2007 Location: United States Status: Offline Points: 10 |
Post Options
Thanks(0)
Quote Reply
Posted: July-26-2023 at 12:44pm |
|
Yes
|
|
|
|
|
KENO
Grand Poobah
Joined: June-06-2004 Location: United States Status: Offline Points: 10650 |
Post Options
Thanks(0)
Quote Reply
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?
|
|
|
|
|
Post Reply
|
|
Tweet
|
| Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |
Topic Options