Honda GX620 clacking noise

[ILENGINE]

I would pull the head since there is a butterfly screw embedded into the top of the piston or head.

 

[Langdon19]

surely there is enough piston head clearance for a butterfly screw? I’d expect it to have pinged out the exhaust valve, could be stuck under a valve.
The more I think about it the more I think decomp off the cam, but yes should probably bite the bullet and pull the head or side cover.

 

[Langdon19]

When it was left out in the rain anything could have been dropped down the open mouth of the carb

 

[Scrubcadet10]

Heads have not been removed. Uncanny thinking mate. After being left in the rain the carb was seized, I ordered a new one and when I pulled the old one the butterfly fell out on the bench. Could well be a bit of metal mashed to the top of a cylinder.
What’s easier to pull, head or side cover?

They're both about the same....
Sidecover probably

surely there is enough piston head clearance for a butterfly screw? I’d expect it to have pinged out the exhaust valve, could be stuck under a valve.
The more I think about it the more I think decomp off the cam, but yes should probably bite the bullet and pull the head or side cover.

Its happened on a few inteks. Taryl fixes all mentioned that on youtube. It hammered the piston and pinched the rings so it was smoking like a son of a gun.

 

[Scrubcadet10]

I would pull the head first.

 

[bertsmobile1]

The landlords Kohler managed to swallow a screw from the carb butterfly.
It had been getting harder & harder to start for quite a long while
We were amazed when I shoved the bore-a-scope down the plug hole & saw the moonscape

 

[Scrubcadet10]

Did you see the man in the moon?

 

[Langdon19]

Small piece of magnetic metal stuck to head
Could be a spark plug electrode but who knows

 

[Langdon19]

Piston

 

[Langdon19]

Anyone know what this is? Heavy for its size and magnetic