bassman when you say you rebuilt the motor did you take the crank case cover off and remove the tappet gear?

You will need to lap the valves in and check the seats and then reset the valve clearance?

I would be looking at the valves first and setting the clearance to see if that fixes your problem but I will need the model type and code to give you the correct settings. cheers2

Regards,
[Linked Image]

Bruce


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