I have a huskivarna with a 15hp kohler engine not running. I am trying to figure out why it wont run. the guy brought it to me after he rebuilt carb an still couldn't get it to fire up, well ive got it to get fuel to carb now and it does have spark. I pulled the plug and its dry I put some fuel into cyl and it will try to fire. ran comp check on it and it has about 95psi only thing I can think of is that the intake valve not opening.any info would help @ this point since im just doing a favor for a wifes friend id rather not have to tear into this too far if don't have to thx