I've communicated with a few of you directly, but I thought I would open it up to the group. My motor is a CB 1919 with Weber 44 IDFs. The motor got a little dyno time before it was shipped to Carey. Carey put a few miles on it after installation and changed the oil and adjusted the valves. At around 700 miles I took the car to a shop that does mostly Porsche work for a valve adjustment and engine and tranny oil change.They set the valves to .002" as per Pat Downs' specs. As soon as I drove away from the shop I noticed some chuffing and poofing that the car had never done before. This happens in low RPM and low engine load situations. It's not constant, more like random. Everyone I talked with seemed to think there must be a clogged idle jet. On Saturday I removed all four jets and emulsion tubes and blew them out. The problem has not been rectified. Yes I'm 99% certain I got them back in tightly. So now I'm asking for the brain trust to express some ideas. Per the work order, valves were adjusted to .002", oil and filter changed, trans oil changed, inspection of belts and hoses, replaced right rear wheel seal, repaired heater control cable, checked intake manifold torque to 20 lb-ft, found timing in line with specs at 30* BTDC at 3000 RPM and 10* at idle. That's it. Anything on this list that could have provoked the problem? Today was the first chance to get on the freeway and heat things up and try to blow things out. When I got home, after dark, I got out and blipped the throttle a few times and was able to get two chuffs thru the right carb. Am I best served by taking the car back and having them retrace their steps, or is it possible this problem is purely coincidental to the work done?
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