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post #1 of Old 01-27-2013 Thread Starter
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Yanmar 2gm20f

Hi everybody, I am a new sail boat owner. Just got Pearson 30 and I have problem with my yanmar 2gm20f engine. To make it easier to explain shortly, this is the list what I did and the probles:
I did:
Change the oil and oil filter. Now the oil level is 1/3 above minimum
Replaced old fuel with fresh diesel and replaced the fuel filter.
Put new battery
Air bleed the fuel system

What's happening:
The engine, hardly, but starts on key
Once starts, the engine runs on max rpm's with 0 throtle. The only way to stop the engine was to chock the air intake because the fuel shot off ( tried manually on the engine block) does not react.
Checked fuel delivery to the injectors and the fuel after high pressure pump is coming only to
the second injector, closer to the gear box, bot not to the first injector.
On the first start black smoke came from the exhaust, but after that no smoke or steam was coming out on max 3200 rpm's The sea water pump looks like is working good.
Any idea where I can start from? This is my first sail boat and first diesel engine to deal with. Thanks a lot!!!
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