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Old 11-18-2012
johnskolfield johnskolfield is offline
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Re: Yanmar 2gm black smoke

This is very helpful information. I appreciate your time.

The boat sat for many years so when a mechanic helped the old man move it they just hooked up a small plastic marine tank as they were concerned with what might be in the built in tank.

Since I got it I've emptied and cleaned this little tank so it should be good. I'll research diesel bugs. As I was in a cramped space working to bleed the injectors I may have pushed the decompression valves some by accident. I didn't even know where they were but since have found them on line and they're right above the injectors.

The small fuel filter by the injector pump looks like new (was replaced 20 hours ago), not sure if one can tell by looking if it is good or not. Is the primary filter the one that is a glass container to drain water out of? If so I've checked it for water but haven't looked closely at the filter. It also is fairly new.

Starting it is really hard to get it to catch. It will cough and try and come close with me working the throttle but very, very stubborn. Once running it idles fine without black smoke and will even idle at higher RPM's but if pushing the throttle quickly it will hesitate unlike before this problem.

It ran perfect and always started immediately weekly for the last three months. I may have goofed in how I bled the fuel but have double checked all the fitting s to make sure I tightened them up properly.

Thanks again,

John
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