Bleeding problems on a Yanmar diesel engine - Page 2 - SailNet Community
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post #11 of 12 Old 11-19-2009
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I did something similar on my Yanmar 3qm30. I used 4 gate valves from the hardware store and an electric pump with 2psi output. I can isolate the engine from the filters and pump fuel thru the filters and back to the tank or use the electric pump if my mechanical fails. sure makes it easy to change the fuel filters.

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post #12 of 12 Old 12-02-2009
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I learned something this summer when I ran out of fuel, that might help incase anyone else has the same issues. My engine is a 3gm, when I was pumping with the manual lift pump nothing was coming out. After 300+ pumps I knew something wasn't right. Well turns out that my lift pump has some give when you first press it down. Maybe 1/2" or so, then it felt like it was at the end of the stroke. Only when I got reallly mad and pushed way harder than I thought was needed did I find the "second" stage of the pump. Couple minutes later fuel was flowing. Very frustrating @ 1:00am.
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