Topic: 550 Primary Slappy Slap , how much is too much

[chippyfive50]

I know my carbs are out of sync to some degree, but my primary is like a caged gorilla.
it smooths out above idle, should I be concerned?
I do not know how many miles the engine has, when I bought it it was CLEAN, and has good comprssion and runs great.
I have had it in the 8500rpm range and it smooth and strong.
It just seems noisy @ idle....

[bistromath]

Tune the carbs and adjust idle air/mixture screws, then ask again. =)

[Jay B]

I know my carbs are out of sync to some degree

There's probably your problem

[bryanj]

Remove the sump (should be cleaned out annually anyway) and feel how much the chain has gouged out of the oil galleries, if its a lot you need a new chain and thats a total stripdown