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Old 08-26-2017, 07:25 AM   #1
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Westerbeke 8btd Fuel Solonoid

My generator fuel solenoid is only partially engaging during "preheat" (You have to hold the preheat to turn off the safety circuits which engage the fuel pump and solenoid during starting). After about 20 seconds of it running at low rpm (maybe 1000) with preheat held, the circuit breaker on the generator pops and it shuts down

If I jump the solenoid it starts and runs just fine, and after about one minute I can remove the jumper and the solenoid and fuel pump run just fine.

My first guess is that I have a shorted glow plug that's pulling the voltage way down but its a little hard to get to so thought I might poll the forum first.
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Old 08-26-2017, 10:35 AM   #2
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Can you get easier access to the wire leading to the glow plug disconnect it , and see what happens?
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Old 08-26-2017, 10:54 AM   #3
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My solenoid linkage was corroded and affected the travel. I replaced the linkage and the solenoid has worked fine ever since.
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Old 08-26-2017, 11:33 AM   #4
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Quote:
Originally Posted by CaptSteve53 View Post
Can you get easier access to the wire leading to the glow plug disconnect it , and see what happens?
Yes, I can get to the solenoid for the plugs a lot easier than the plugs themselves. I'll disable and give it a go
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Old 08-26-2017, 06:18 PM   #5
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Id guess linkage or bad wiring to the selnoid.

Check the glow plugs for ohms as well.
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Old 08-26-2017, 07:37 PM   #6
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When you hit the preheat switch the solenoid should snap right across fully. Easy to observe.
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Old 08-26-2017, 08:02 PM   #7
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Quote:
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When you hit the preheat switch the solenoid should snap right across fully. Easy to observe.
Yep, as I mentioned, it does not but does if jumped.
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Old 08-26-2017, 08:04 PM   #8
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Quote:
Originally Posted by CaptSteve53 View Post
Can you get easier access to the wire leading to the glow plug disconnect it , and see what happens?
That did the trick, I popped off the glow plug solenoid wire and it fired right up. Short in glow plug circuit somewhere but out of the woods now, don't need glow plugs in this climate much
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Old 08-26-2017, 09:05 PM   #9
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There is a service bulletin on that requiring another wire connecting two screw posts. Easy fix.
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