Post by Willys Terkker on Oct 28, 2018 12:15:18 GMT -5
Hello all, new member here. Enjoyed meeting Rick at the annual Willys Jeep Get Together in Mills River, NC this month; and appreciate his taking my call of desperation after that. Ran into a carb situation that I had never encountered in 60 years of engine tuning. Engine idle would not respond to idle mixture screw adjustment. Check out all the usual suspects; throttle plate too far open, clogged idle passages, timing issues,.... Finally, after a week's respite to clear my head, I found that on one try, the idle mixture screw screwed significantly further into the carb body than on the prior 10 (?) occasions. Apparently, there was sufficient side play in the idle mixture screw treading to allow the tip of the idle mixture screw to miss the port hole and instead, hit the side of the orifice casting. So, even at what I thought was the "bottomed out" position, the idle mixture port was fully open. Needles to say, backing off 2-1/2 turns from that position only made things worse. Once I properly seated the idle mixture screw in the idle mixture port and then backed off 2-1/2 turns, all went well. Kind of a dumb mistake for a guy who has put 87,000 miles on his Willys Station wagon driving it around the the United States for the past 41 years. Back on the road again!