Last fall I made the "homemade manometer" with a yard stick, tubing, and some ATF fluid. Followed instructions and got my TBs all synced up no issues. I really could not believe how much smoother it made the engine. IT really felt like a different engine.
So here is my problem. Bike seemed to not be running as sooth anymore. I thought no biggie, I will do the TB sync again and be good.
So I start by pulling the black caps off of my TB sync tubing. When I did, I noticed some fuel come out of the tubes, not sure if this is normal, no big deal, or a sign of "something"?
Next I hook up the manometer, and fire it up. It pulls so hard from the rear TB, I barely have time to turn the screw to even it out before I have to kill the engine so it does not suck fluid. So I do this a few times and the adjustment screw is almost completely backed out and it is still not even close to even vacuum. If I turn the screw in (clockwise), it only sucks harder and makes it worse
Engine was warm, ~1,400rpm idle when tested
2003 DL1000, PCIII