XTM 250cc Knocking

desoto62 · 12-29-2013, 11:27 PM

I have a water cooled 250CC XTM quad, knocking sound in the top part of the engine once it gets to running temp. Have done some research on other blog’s and most suggestions are around the timing chain & tentioner. This model does not have a chain and runs on gear driven cam & push-rod. Have checked the clearances and all are good, but still have the nock. Once on temp, the knock is audible at idle and increases with RPM. Hope someone can point me in the right direction?

12-29-2013, 11:27 PM	#1
desoto62 Join Date: Dec 2013 Posts: 3	XTM 250cc Knocking I have a water cooled 250CC XTM quad, knocking sound in the top part of the engine once it gets to running temp. Have done some research on other blog’s and most suggestions are around the timing chain & tentioner. This model does not have a chain and runs on gear driven cam & push-rod. Have checked the clearances and all are good, but still have the nock. Once on temp, the knock is audible at idle and increases with RPM. Hope someone can point me in the right direction?
	0