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Gordon Wedman
 
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Default Bleeding a diesel engine


"Roger Long" wrote in message
...
"Gordon Wedman" wrote

-my other experience with Yanmars is that the hand lever on the engine
fuel pump is pretty useless for bleeding, hence my addition of the Racor
filter with pump.

Our Yanmar installation has an electric pump to draw fuel up from the
tank. Would a bypass switch to activate this pump make bleeding easier?
Is the hand pump on the engine a type that will pass fuel through if
pressurized from upstream?

--

Roger Long


I would say yes to both questions. If I use the pump on my Racor filter it
sends fuel past the engine pump and out the injector bleed screw.

I forgot to mention another trick is to get someone to hold down your
compression release lever, or jam it down, and then spin the engine with the
starter while the injector pump bleed screw is open. This seems to work the
engine mounted fuel pump a lot faster than you can by hand and will shoot
fuel out of the bleed screw. Best to cover with a rag.