Exhaust valve rocker loose 19.5

R

Rusty T

Forum Newbie
My 19.5 Briggs started running bad and I found the exhaust valve adjustment nut was not tight and the rocker arm very loose. I adjusted the valves and it ran fine for a few minutes. Now it sounds like crap again. Do I have a cam going bad?
 
If it ran fine a few minutes I doubt the camshaft is the problem.

Well did you check the rocker stud? They do come loose. They need to be torque to 150 in/lbs and sometime it even take blue Loctite on the threads.. And the setting screw or locking nut torqued to 45in/lbs.

Also make sure the push rod is not getting bent.
 
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