GrabbinGears705

Have a 99 mack ch 600 and did a PM on it and it was good for a day or so and then we found it had no power, felt like a Honda engine was in there. Would start and idle fine just no power. So after a while found it you pumped the primer for the fule system the problem went away and would come back for a while. I checked the filters for double gasket, checked for air leaking and couldn't find anything. Any suggestions? Thanks Josh