95' Idles Great, but Won't Rev
New Timing Chain
Got it to fire right up, no issues.
Went to rev it... and it wouldn't rev.
Remove the air-box... same result, only I could see the vacuum butterfly fluttering like crazy when giving it gas.. and manually holding it open did nothing.
I had the carb off previously, and did a thorough cleaning, set the mix screw out 1.75 turns.. yadda-yadda. I figured maybe there was some junk in the lines that made it's way into the bowl or something. (I did clean out the fuel pump and petcock as well).
Get to tearing into the carb again and I notice that the needle on the mixture screw is a bit wonky (dented), and doesn't have the "Mikuni" logo on it (the double box logo). I also notice the main jet and pilot jet don't have the logo either, however the emulsion tube does, as does the air jet under the CV diaphragm in the top of the carb. I also notice that the washer under the main jet is missing.
So, I ordered some genuine parts from Bike Bandit... new O-rings, springs, washers, pilot, main, and mixture screws.. hopefully this will get rid of the bogging issue...
Any other ideas? I had checked my coil, CDI and R/R on my good-running KingQuad 300 with no issues... fired up, revv'd up, etc... so I am ruling them out as culprits.
While running, the battery voltage is pretty solid at 13.65V DC at idle. Spark is FAT and blue.
My only other guess would be that maybe I installed the cam 1 tooth off when I changed the timing chain... I will diagnose that soon enough, as I am guessing it's not the issue.
Finally, as it was idling, I did a "spray and pray" check around the carb, and boots with some carb cleaner... 0 affect to the engine.
My guess is a lean condition via the mixture screw being incorrect and sucking air through the emulsion tube base...
Here's hoping at least.
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