harry Posted May 19, 2007 Report Share Posted May 19, 2007 can anyone help me? black oil comes out of the first exhaust joint on my 2001 montesa 250. I am running it on 50;1 Rock oil 2 stroke , is this right? Also I have no way of knowing how much gear oil to put in, Could too much damage it? Quote Link to comment Share on other sites More sharing options...
motojojo Posted May 19, 2007 Report Share Posted May 19, 2007 (edited) On the 2-stroke oil I run 80 to 1 even 100 to 1 in the winter, 50 to 1 is a smoke bomb and your tail pipe needs cleaned because I've seen them light up. Edited May 19, 2007 by gtgasgas Quote Link to comment Share on other sites More sharing options...
harry Posted May 19, 2007 Author Report Share Posted May 19, 2007 On the 2-stroke oil I run 80 to 1 even 100 to 1 in the winter, 50 to 1 is a smoke bomb and your tail pipe needs cleaned because I've seen them light up. thanks gtgasgas only this poises another problem as I don't know how to clean out an exhaust,but thanks for the advise Quote Link to comment Share on other sites More sharing options...
motojojo Posted May 19, 2007 Report Share Posted May 19, 2007 Get some degreaser or engine cleaner, remove the tail piece and or exhaust pipe, and wash it out. Never use gas just a good cleaner. Quote Link to comment Share on other sites More sharing options...
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