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You can try a higher octane fuel. Higher octane fuel ignites slower. If you have set your curb idle high, (above 800) lower it.
Also….check your initial timing. More initial timing will increase your curb idle speed allowing you to close the throttle blades more in order to back it down to your...
Car manufacturers started using ported or timed vacuum advance in the late 60's for emission reasons. The engine ran hotter at idle and burned more of the emissions.
If you look at early 60's cars factory set up you will typically see full manifold vacuum advance.
There are many articles out...
Hard starts has nothing to do with the vacuum advance.
As far as which port to use…..there can be an advantage to using full vacuum. It will ad some advance at idle and you can shut the throttle blades more and expose less of the transition slot. This can help with dieseling issues if you have...
Too high can cause flooding. The proper height measurement should have been included with the instructions on a chart. Typically there is a small paper measuring rule included in the kit.
The floats on a 4100 are internally adjusted, so you will have to take the top off and measure.
I don't...
By screwing them in all the way you are leaning it out. You must have a rich condition. Did you set your floats correctly? Is the choke coming off?
If you are truly screwing them all the way, and it doesn't kill the engine, you may have a vacuum leak. Look for unplugged ports on the...
Yes, the wiring harness would be the same. You need a key "on" 12v source for the choke. You probably won't have a specific wire from your harness, unless its an aftermarket harness.