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RE: 1973 DT 3 tuning
Dave said 2009-09-15 12:06
I had a 78 dt 175 was the same way. I burned up 2 pistons before I figured it out. Seemed like I would lean it out and it ran great. Then I found the real problem. Check your spark arrestor in your muffler, mine was plugged tight, the engine couldnĀ“t breath. If thats what it is put your jetting back the way it was or you will melt a piston too.