westerbeke 30b3 engine stall - SailNet Community

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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel
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Diesel This is a new forum dedicated to diesel engines and their applicable accessories.


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Old 04-28-2013
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westerbeke 30b3 engine stall

I have a westerbeke 30b3 . When at normal operating temp the engine starts to lag then dies. As soon as it dies though it can imidiatly be restarted. Then the cycle of time to stall again gets shorter. I have replaced the lift pump,installed new racor 500 fiter/water sepparator.new filter cartrige on the engine, all new fuel line(send and return).new pickup tube.emptied tank and cleaned. Inspected 20 gallons of fuel(looked good). Still same problem. The mystey however is, after new lift pump filters I isolated the tank and lines and ran from a jerry can using lift pump and filters in the system and it ran great. This is what prompted replacing lines and cleaning tank. Any help would be gread as myself,friends and our local westerbeke mechanic are stumped.
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Old 04-28-2013
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westerbeke 30b3 engine stall

Check the fuel vent on the tank
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Re: westerbeke 30b3 engine stall

Vent was not the issue but, thank you for your input. So....my next attempt to find a problem was to use a new jerry can with newly purchased diesel. Set it next to the tank to test if the lift pump was not able to move the fuel the 20 feet required. Now, the diesel in my tank has red dye in it from a stop at afuel dock 2years ago. Started the engine....ran fine till it aproachedc operating temp. Starrted to lag and then almost died. As this was happining I watched the bowl on the filter go from pink to clear yellow. As the last of the red left the filter(durring my almost stall) she came back up and go an extra 50 RPM and ran grat with no lag or stall. The moral of this is.....BAD FUEL.
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westerbeke 30b3 engine stall

glad you got it diagnosed
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Old 04-28-2013
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Re: westerbeke 30b3 engine stall

Interesting that it would only stall at operating temp. Usually depending on how bad the fuel is it either wont run or runs consistently poorly.
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Re: westerbeke 30b3 engine stall

Racecase I k.ow it the weirdest thing but there it is
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Old 04-29-2013
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Re: westerbeke 30b3 engine stall

This pic is of the last gallon or so of gasoline extracted from my tank a few years ago. The fuel tank had not been drained in an unknown (long, like 10 years) period of time.

Granted, this is gas and not diesel.
As Tony the Tiger used to say: "What's in your tank?" (old Esso commercial)
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Re: westerbeke 30b3 engine stall

No more B5 diesel for me.!!!!!!!!
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