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jkv45 · December 31st, 2018, 01:02 PM

I would start by taking things apart and confirming what's going on with the top end. It may not be as bad as you think. Could be possible the valves are way out of spec and hanging open, so you aren't getting compression.

How does the oil look? Drain the oil and look for any bronze colored flakes, which would indicate a bearing failure.

What do the plugs look like?

December 31st, 2018, 01:02 PM	#11
jkv45 Rev Limiter Name: Jay Location: WI Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot. MOTM - Jun '18, Oct '16	I would start by taking things apart and confirming what's going on with the top end. It may not be as bad as you think. Could be possible the valves are way out of spec and hanging open, so you aren't getting compression. How does the oil look? Drain the oil and look for any bronze colored flakes, which would indicate a bearing failure. What do the plugs look like?