Scotth53

Member
Jun 9, 2020
1
0
Hi. I need help with my 84 Honda xr250r. Broke off an intake valve so I bought a used head. Timed it with the cam lobes facing down, the timing marks level with the head at tdc on the flywheel. My issue is that when I put the valve head/cover on there's no compression (very easy to push the kickstart) but if the valve head/cover is off then the compression is normal ( meaning it's hard to push the kickstart). What would cause this?
 

Rich Rohrich

Moderator / BioHazard
LIFETIME SPONSOR
Jul 27, 1999
22,838
16,902
Chicago
Something in the cam cover is pushing one of the valves open. Time to retrace your assembly steps using the service manual to find the culprit.
 
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