Carbs and Valves

[lurch12_2000]

Well I got all the valves checked and wrote down the shim sizes for next time but I wasn't able to get the feeler gauge in two of valves. Should I just go down a shim size and see if that does it or is there any way to figure out what size I need besides trial and error? Also, one of the valves measured right at .08 but the next size up on the feeler gauge was .10 so should I replace this shim also with one size up just to be safe? At least then, it'd be .03 and wouldn't have to worry about it possibly being .09 right?

If you are using a .03mm feeler gauge and it won't insert then yes you'll probably have to go one size down, but I had to go 2 sizes down on 2 of my valves.
I would leave the one you think is at .09mm alone.

[Steve]

On your valves that won't accept the .03 gauge, take a look at the thickness of the shim. Look at your other shims (you said you recorded all of them), see if you have a smaller one you can swap in there to check. Even if your next smaller shim is two sizes smaller, at least you will know whether you need to drop one or two shim sizes.


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