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Thread: Westerbeke EFI generator issues

  1. #1
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    Westerbeke EFI generator issues

    I have a Westerbeke generator EFI that will not run anymore. It quit working while running. It sputtered and stalled out as if it ran out of fuel. We did all of the recommended self checks as advised by the manual. The fuel injector works. The oil sensor is good. Fuel lines were bled. Also the spark plugs are dry. Not sure if anyone else on here has had this happen. We would appreciate advise on what else we should check.
    Thanks

  2. #2
    Senior Member Frantically Relaxing's Avatar
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    An engine needs only 4 things to run:
    1- fuel (correct amount helps)
    2- air
    3- compression
    4- spark (delivered at the right time)

    Best I can tell from online searching, these are multi-port injected. If that's the case, while the injector may be working (they 'tick'), that doesn't mean they're spraying fuel, and IMO they're not. Evidence of that is the fact the spark plugs are dry. Fuel entering cylinders that aren't firing typcial make the plugs damp, or at the very least, reek of raw gasoline...

    Chances are 99.999% that the engine's getting air and making compression, so the problem boils down to either lack of fuel, or no spark at the plugs (or yes spark but not even close to the right time, but that too is very rare)

    It's easy enough to tell if you're getting spark with an inductive timing light- if it works, you have spark...

    The other giveaway that it's a fuel issue is you said it 'sputtered to stop like it ran out of gas'-- that may be exactly what happened, in one way or another (water in the fuel, fuel line sucking air, plugged filter, plugged filter sock on the fuel pump, etc)- Spark issue shutdowns usually just stop the motor cold as if you turned off the key, no sputtering...

    There should be, or might be, a schrader valve on the fuel rail to test for fuel pressure. Looks like a tire air valve. If you can't find it, time to consult a mechanic. If you do locate it, any auto parts store has gauges to check the fuel pressure on these valves. Crank it over a few seconds, you should get around 30 psi of pressure if all is well...
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  3. #3
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    Thank you for replying. We did preliminary diagnostics and check fuel pressure at the schrader valve with a test gauge and saw just under 40 lbs of pressure and through bleeding it off we saw no air in the gas. Put a different injector in and same result of crank but no start with dry plug.
    Last edited by ltrdayz; 11-12-2016 at 03:48 PM.

  4. #4
    Senior Member Stmbtwle's Avatar
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    Could there be an electronic problem with whatever fires the injector?
    She's a tired old barge but she's paid for!

  5. #5
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    I think that is what it is looking like.

  6. #6
    Senior Member 42gibson's Avatar
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    did you you try pulling a plug and putting a very small amount of gas in the cylinder to see if it starts or fires?
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  7. #7
    Senior Member Stmbtwle's Avatar
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    Hm. It's a simple thing but have you checked the oil? There may be a low oil shutoff.
    Any of the possibly several shutdown mechanisms could be at fault.
    She's a tired old barge but she's paid for!

  8. #8
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    Went back up to the boat today to troubleshoot the generator some more. Still no resolve. The oil is good as is the gas. Not sure what actually fires the fuel injector but whatever it is may be the issue.
    Thanks for your input though. Let me know if you can think o something else to check.

  9. #9
    Senior Member easttnboater's Avatar
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    I can't help with your EFI - my experience is only with carburetors on generators.

    However, if you are spinning your genny without it firing, you can fill up your water lift muffler - it relies on exhaust pressure to blow the water out of it. If the muffler fills up with water, it can fill up your cylinders with water via the exhaust valves. If that happens, you will be looking at a much bigger problem.

    Your muffler should have a drain plug. You might want to drain it some as you are trying to get the genny started.

  10. #10
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    Thanks on the water in the muffler info. We will drain it when we go back to the boat. I contacted a Westerbeke supply store and hoping that he will be able to recommend someone who can give us advise or go up and fix it.

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