We motored for 38 straight hours recently and after dropping anchor
, when we pushed the "Stop" button the engine
did not die immediately as in the past; instead it ran badly for 15 or 20 seconds (sounding as if it were running on one cylinder or on all four, but intermittently) and finally died.
The next morning it would not start. In the past this engine
(2500 hours) would start instantly, no cranking necessary). I changed the fuel filter
and there was plenty of flow on purging.
We were able to get it started by pumping (with the manual pump
used to purge the fuel
filter) with the throttle at half speed idle. When it started it ran very roughly for 15 or 20 seconds before finally running smoothly. We repeated that 3 times before it would start at idle. The next day it would again not start at idle, but would at half throttle repeating the prior day experience.
Prior to the 38 hour trip, I had changed the fuel filter
so it could be air in the fuel
, but how had everything gone well for 38 hours of motoring just before the failure?
I'm wondering if this is a problem with the "Stop" button solenoid in the fuel injection pump?
Any other ideas?