Re: Holley choke adjustment?
Suggestions JimM gave are good. From my experience, it has taken me a few days to set the choke for excellent running.
You have an electric choke which should be hooked up to a full 12 volts, and not pigtailed from the coil wire and a ground.
I had to set the choke for two settings depending upon season, ie, summer - leaner or winter - richer.
You fast idle rpm of 1400 is good. Just be sure, in the morning when coldest, once you've open the throttle to WOT, the choke plate closes completely, it should 'snap' shut and the fast idle cam kicks in. If not, fix it, maybe a squirt of lube.
On the black cap, choke heater, loosen the three screws and rotate the cap towards 'RICHEN' a notch or two from the center. Clamp down the cap and test. Take note, if the engine stumbles less, then you are going in the correct direction. If the engine runs worse, reverse the direction towards 'LEANER'.
Make an adjustment and test the next day when the engine is cold. Adjust the choke cap a notch or two at a time in the direction of better running.
The ideal set-up is coming out, hit the throttle at least twice, start the engine, it fast idles, warms up, and fast idle kicks out. This all can happen with the vehicle setting for three minutes or start the engine, let run for 20 seconds, then drive, no bogging, no backfire, just smooth running.
It takes time, patience, and a mental notebook of cause & effect when an adjustment is made.
If the vehicle ran good during warm weather cold engine, mark the position before doing any adjustment to mark for summer operation.
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