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Originally Posted by mrlmd1
Why would you want to fuss with it if it runs fine? Any advantage to checking the clearances if performance and gas mileage is OK?
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Because there often are NO symptoms of a valve out of adjustment........until there is damage that can't be fixed with a simple adjustment. This is especially true of designs with multiple valves per port.
I think the recommended intervals are extremely short for the GZ. I intend to have mine checked at about 2X the recommended interval......sooner if there are symptoms.