Thread: Elementary Question

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Originally Posted by dhemi1

Hey guys/gals.

How do you know its time to change your jets in your carb instead of tuning your mixture? I assume you tune first then if that dosn't work then you change jets?

I still havn't graduated to real men carbs yet lol.

Thanks!
-CJP

With today's gas it is very hard to "read plugs".
What still works a little is make a hard pass for at least an 1/8 mile.
Kill the engine and coast to the side and pull the plugs.
Yes,you will burn the $hit out of your hands.
You are trying to shoot for a carmel to tan color.
If they are white than you have gone to far.
I would try 4 sizes at a time to even see any color change.
One word of caution DON'T LOCK YOUR STEERING WHEEL WHEN YOU KILL THE ENGINE!!
Just turn it one click back.

Oh okay. I see. I thought you had main metering adjustment screws aswell, like RC engines but those carbs don't have removable jets (molded into carb body), I see the point now. I really need to get a carburetor tuning book and Holley's tuning DVD

Thanks alot guys,
Appreciate it,

-CJP