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Black smoke and hanging idle after a full rebuild

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thomaspigeon:
So I also forgot to mention. My compression tester is a rubbish one. It doesn’t have a valve on the spark plug side  but on the gauge side. Meaning my compression reading should be a way higher with a proper tool.

Now I’ve done other engine rebuilds with this tool. And I always had a low reading with it. I never bothered changing my tester as the engines were running strong all the time after my rebuild.

About the pods. As I said previously, the previous owner discarded the airbox, bracket included so I didn’t have the choice really. I’m running K&N pods with oil on them. I run K&N filter on my africa twin and it’s spotless. I agree that velocity stack will knacker any engines. But pods are not supposed to if they are from a good brand

thomaspigeon:
Now I know pods are a compromise and I’m ready to be wait until I get the right balance. I’m sure I’ll get there. It’s just a question of time

fogrider:
Thomas, something to check while the carbs are in bits: mine was way over rich the full range, one of the things that seemed to make a massive difference was the seatings for the emulsion tubes. I was a bit slow spotting this , but a minute examination of the emulsion tube alloy turret showed that there was ally gunge on the seating face, also minutely on the brass seating face of the tube. (needle jet end ). It took a multi-facet milling cutter (6mm) turned carefully with fingers only, to clean the ally seats  up. Also, the turret had minor surface faults inside where the main jet O ring sat that needed carefully polishing out.
In addition, I felt that the main jets were not fully in despite being pressed to where they felt "right". I put a main jet in without its O ring and clocked the depth it sat. I found it needed a steady push to make the jets sit fully home. I'm certain that all the above  cured some fuel leakage past the seating face in the depths of the alloy turret.
Can't prove it, but I think its an essential thing to make sure is spot on.

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