1986 Fourtrax 350 tapping noise

[smeranti]

Hi this is my first time here. I bought two 1986 fourtrax 350's for my two sons. One had a bad intake valve and one with a bad exhuast valve. Replaced both. the one with the intake valve runs great. the one with the exhuast valve has a tapping noise in the engine. Set valves to gap in manual. Any ideas?

 

[4-Trax]

I have the same machine since new and have the same tapping noise.
The noise I have is from the cam chain, which really makes noise for the first 3-4 minutes, but when the engine warms up, the noise goes away.

My machine needs a new chain and chain guide/tensioner as the metal backing is what is tapping. Mine has over 65,000 miles on it, and this is the first bit of noise that it has made.

 

[smeranti]

Replaced Valve rockers and noise is gone.