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Message: <blockquote data-quote="pinball1" data-source="post: 15769" data-attributes="member: 1620"><p>I've got an 2001 LS170 that smokes and I am sure you guys could point me in the right direction. It has 900 hours and fires right up with no smoke, but will shoot out a good stream of black smoke when increasing RPMs but it clears up pretty quick. What I do notice is that if you run the machine above 2800 RPM it blows black smoke all the time and seems to have a little miss, below 2800 and it runs clear unless you put it under a load or increase the RPMs higher. I notice the exhaust has a good bit of black ash/powder in it, much more than just a coating of the pipe reminds me of ash in the fire place except it is jet black. I am very mechanical but all my experience is with gas burners. It doesn't use any oil. I have replaced the outer filter as they didn't have the inner. Doesn't seem to be down on power when you are below the 2800 Rpm range, above that and it may be a little weaker with a miss maybe? Any advice would be appreciated. Mike</p></blockquote><p></p>