keep thinking about oldmako’s “intermittent failure-to-keep-VST-full-at-idle problem”
I think if I had the problem, I would get the engine up on land and study that LP pump performance;
Connect a test lead so I could manually run the pump.
Rig a collection container so I could open the VST drain.
I’d want to get a vacuum reading on the suction side with the pump running continuously.
I’d want a pressure reading on the outlet
I’d plumb some clear tubing into the intake side to see if there’s bubbles when the pump runs.
But if all that checks out under testing - then what?
for an “intermittent” issue,
what can one rig up to monitor pump performance during normal continuous operation ?
a test light in parallel with the pump?
a pressure gauge on the outlet (plumbing on that would be a challenge..)
and his problem is at idle - when the pump is only supposed to run 10 seconds on, 20 off......
I think if I had the problem, I would get the engine up on land and study that LP pump performance;
Connect a test lead so I could manually run the pump.
Rig a collection container so I could open the VST drain.
I’d want to get a vacuum reading on the suction side with the pump running continuously.
I’d want a pressure reading on the outlet
I’d plumb some clear tubing into the intake side to see if there’s bubbles when the pump runs.
But if all that checks out under testing - then what?
for an “intermittent” issue,
what can one rig up to monitor pump performance during normal continuous operation ?
a test light in parallel with the pump?
a pressure gauge on the outlet (plumbing on that would be a challenge..)
and his problem is at idle - when the pump is only supposed to run 10 seconds on, 20 off......
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