Re: Has anyone done their valves in a 4 stroke?
A compression test shows how much static compression a motor has. Leaking rings and valves reduces the amount of static compression a motor can make. Then a leak down test can direct you to the leaks. Most small engine shops should have the correct equipment to grind valves and seats. If they are worn like you say, the valve guides probably need some attention too. They don't run better with bad valves,seats, guides and rings.
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