Hitting on Two Cylinders ?

Could be fuel-related.  You may want to start with the inexpensive, easy checks first, like replacing your fuel filter(s).    

If this happened after you filled with gas, maybe it was bad gas. Put some carb cleaner in it top off with fresh fuel and see if that cures it. I like Techtron concentrate or Sea Foam.

Gary

Clean the idle jets. 

Happens to all of us at one time or another.....

While something like Sea Foam is really good stuff and certainly wouldn't hurt it, since you just filled the tank I would run the Sea Foam double strength to the tankful (just guestimate how much gas is in there), do not add any more gas to the tank and just run the tank out as low as reasonable, then refill with gas from someplace local that you trust.

Kadrons respond well to sucking crud through the jets by blipping the engine to about 3500-4000 rpm and letting it go and as soon as you let the throttle go, slap the palm of your hand onto the top of the carb throat, thereby blocking it off and creating a huge vacuum both below and above the throttle butterfly.

Sometimes this sucks the crud out of the blocked passage, sometimes not but it's an easy try and won't hurt anything.

Good luck. 

Thanks all for the input.  The idle jets on Kadrons are pretty easy to get at without removing the carb.  So hopefully its just unscrew from the throttle body, remove, blow out and see if there is a change.

Also, is there a preferred type of fuel filter for running between the gas tank and my electric fuel pump mounted near the tank?  I have one of the cheap transparent plastic ones there now.

Thanks, Grant

If the hand on the carb fails to work, Old School is to switch a plug wire allowing it to back fore up through the carb...not the safest way but I have seen it work. 

I guess that means "Back fire" up through the carb".

Kinda like when we used to charge up an electrolytic capacitor in the lab and then toss it to an unsuspecting lab partner.  When it discharged in their hand it felt like someone just blew a hole in their hand (ask me how I know.....)

The stuff we used to do as kids.......Back in the "Old School" days!

" The stuff we used to do as kids" now there would be an interesting thread

Fixed the problem.  Took the idle jets out of each carb, blew them out with carb cleaner, and blew out empty idle jet openings in the throttle housing with carb cleaner.

Didn't notice anything obvious with the jets, but when reinstalled the idle was up where it used to be.

Took the car for a 20 minute drive to let the engine warm up, and after a couple of "pull over idle speed adjustments" the engine is purring at 1,000 rpm.  And actually feels like it is idling better than before, smoother.

Thanks all for the helpful input.  Back on the road.

Grant