5/4/2025
Update
It was not the anti-siphon valve. Thought it was the ignition/fuel pump relay because when I replaced the relay the engine started. However, after running a few minutes it shut down again. The engine would restart when reset the tripped 10-amp circuit breaker on the black box bolted to the exhaust manifold riser.
Determined it was a faulty oil-pressure switch. When it fails, the computer sends a code to limit voltage to the fuel pump. That fixed the problem temporarily. Now the engine will run fine then occasionally die. Wait a few seconds and the engine will restart. It will then run again for various periods of time...minutes to hours before dying again....still troubleshooting.
Update
It was not the anti-siphon valve. Thought it was the ignition/fuel pump relay because when I replaced the relay the engine started. However, after running a few minutes it shut down again. The engine would restart when reset the tripped 10-amp circuit breaker on the black box bolted to the exhaust manifold riser.
Determined it was a faulty oil-pressure switch. When it fails, the computer sends a code to limit voltage to the fuel pump. That fixed the problem temporarily. Now the engine will run fine then occasionally die. Wait a few seconds and the engine will restart. It will then run again for various periods of time...minutes to hours before dying again....still troubleshooting.
MT Gates
1996 Tiara 31 Open
Twin Crusader 454 XLi TBI
1996 Tiara 31 Open
Twin Crusader 454 XLi TBI
