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post #24 of Old 07-08-2013
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Re: Yanmar 2qm15 smoking in gear

Hey Mark,
I seam to have a similar problem with my 31 year old Yanmar 2gm 13hp 3400 continuous HP rated engine.
I Was having some problem at low rpm’s so, I naturally went to change the fuel filter, the one that is part of the engine. Anyway It cranked up but now runs very poorly. I have heavy black smoke suit on the water. Seams like dry oily stuff.
I think $230. for new injectors would fix part of the problemof being old and never serviced, But what could I’ve have done to cause the heave black smoke from today’s filter change? It only got real bad after I changed the filter?

Thanks for your help
Capt. Curt
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