Ok the saga continues.
Thanks Frank, Bill and Don for the suggestions.
Went through the sync steps again. The new cam roller opened the butterfly a tad early, I adjusted that. The economizer link was way off. Adjusted according to the big Red Johnson manual. Could this be the smoking gun???
Dug into the ignition, and the condensers were reading high at .33 vs the .25-.29mfd range. Ordered new ones as well as new CDI coils , just to be on the safe side. I never tested the original coils when I first got the motor, because it initially ran well, and threw a decent spark on a tester. As part of the restoration I also put in new original J4J’s plugs.
I tried to flip the the Sierra fuel pump to the correct orientation, but when the throttle was wide open it hit the top of the pump? I guess that why the previous owner mounted it upside down. After I see how the rest of the new parts work, or don’t work, maybe I will spring for a new OEM pump. $100….ouch.
Since I was getting backfiring through the carb when I reved up, I decided to look at the packing washers again and add a 2 more to the original 2 on the low speed needle, between the two plastic washers. Good idea? I did notice that the metal needle valve bushing came out with the needle when I unscrewed it. Could this be the source of a air leak, and if so should I seal it up with something like red Locktite?
The motor did run well when I got it last year, unfortunately I messed something up over the winter with my total restoration, where no part was left untouched.
I just haven’t found my mistake yet!
When I get the new ignition parts, I will crank it up and report back.
Bob D
