I won't mix threads and update on the oil pressure sender/gauge issue here.
Starting a new thread, for a additional electronic fuel pump issue...
My electronic fuel pump has always registered between 5psi and 6psi. Sometimes the dial will oscillate in this range. Sometimes it is steady at 5psi.
Today during my pre-sail work-up, I noticed a strange rattling noise while the engine was running...
It ended before I could inspect more closely a couple of times, then finally I was able to see it first hand.
-A rattling noise, like a loose marble, originating in the electronic fuel pump coincided with a drop in fuel pump pressure from 5psi to below 3psi.
-At idle the pump would generally recover for a time only to rattle and see a pressure reduction, seemingly without any clear pattern.
-Throttle increase would keep the pressure up and I did not see pressure drop during higher rpm testing. I did not hold high rpm very long.
-This problem repeated at idle
Next steps.
-I suspect the fuel pump is dying.
1) Run briefly in gear at higher rpm for longer duration, see if the rattle occurs during higher loading.
2) Test pump jumping OPSS and seeing if drop in pressure and rattle is observed.
3) Study threads. Consider if there is any relationship between fuel pump operation and my high oil pressure readings. (I think not).
4) Seek your guidance.
Thankful. Fair winds.
Starting a new thread, for a additional electronic fuel pump issue...
My electronic fuel pump has always registered between 5psi and 6psi. Sometimes the dial will oscillate in this range. Sometimes it is steady at 5psi.
Today during my pre-sail work-up, I noticed a strange rattling noise while the engine was running...
It ended before I could inspect more closely a couple of times, then finally I was able to see it first hand.
-A rattling noise, like a loose marble, originating in the electronic fuel pump coincided with a drop in fuel pump pressure from 5psi to below 3psi.
-At idle the pump would generally recover for a time only to rattle and see a pressure reduction, seemingly without any clear pattern.
-Throttle increase would keep the pressure up and I did not see pressure drop during higher rpm testing. I did not hold high rpm very long.
-This problem repeated at idle
Next steps.
-I suspect the fuel pump is dying.
1) Run briefly in gear at higher rpm for longer duration, see if the rattle occurs during higher loading.
2) Test pump jumping OPSS and seeing if drop in pressure and rattle is observed.
3) Study threads. Consider if there is any relationship between fuel pump operation and my high oil pressure readings. (I think not).
4) Seek your guidance.
Thankful. Fair winds.
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