"Yamaha 250 4 stroke 2006 blac
"Yamaha 250 4 stroke 2006 black soot problem
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I own a 2006 pursuit cc3070 boat with twin Yamaha 250 4 strokes. When I start each engine a black soot comes out of the propellar exhaust a considerable amount which is very bad. I have used Yamaha factory technicians with laptops and all functions are normal. The engines themself ruin very well, no problem. I had the Yamaha tech shock each engine with Yamaha ring free. Also, added ring free 1 oz per 10 gallons in fuel tanks. This cured the problem for 1 week and now it's back. Meaning the black soot. I do not idle this boat. I basically start it and run it at 5400 rpm's most the time. This black soot problem is a real problem because it's effecting the envirnoment. It's not a little amount, it's a large amount. Can somebody help me with what might be causing this problem"
"Yamaha 250 4 stroke 2006 black soot problem
--------------------------------------------------------------------------------
I own a 2006 pursuit cc3070 boat with twin Yamaha 250 4 strokes. When I start each engine a black soot comes out of the propellar exhaust a considerable amount which is very bad. I have used Yamaha factory technicians with laptops and all functions are normal. The engines themself ruin very well, no problem. I had the Yamaha tech shock each engine with Yamaha ring free. Also, added ring free 1 oz per 10 gallons in fuel tanks. This cured the problem for 1 week and now it's back. Meaning the black soot. I do not idle this boat. I basically start it and run it at 5400 rpm's most the time. This black soot problem is a real problem because it's effecting the envirnoment. It's not a little amount, it's a large amount. Can somebody help me with what might be causing this problem"
