Help please lol.......
So I have to pwk installed and have been trying to get it jetted to the last 2 days. Started with stock jetting and it was too rich, I'd get a bad gung randomly coming off a Rev meaning there is too much fuel to burn I guess. I figured out the pilot was too rich because when I backed the air screw almost all the way out that gung went away. Ok so next jetting round I try a 45 pilot with 2.75 turns out on the air screw and i loose the gung, also changed the 180 main out for a 178. Went for a rip and i was blubbery at wot. Back into the shop and changed the 45 for a 42 aircrew is now at 1 turn out and main down to a 175, dropped the needle one clip to second and let her rip. Seems pretty good but I think with leaning the needle the 45 will be right in the money so that's the next step. Does this jetting sound safe for sea level to 900ft, 60–75 degrees. 32:1 maxima
k2 with 95 octane pump gas. New boyssen pro reeds and fresh silencer packing too
Also here is where I need the advise, I have been trying to get a consistent idle out of it and I can but there is something strange going on..... I think. When I get the bike all warmed up from a ride and Rev it hard it will come down fine to where I set the idle at, not hanging or surging, no gung sound. When I have it idling and just stab the throttle a little it will come off the low Rev and either die or it will come down to a really low idle then climb fairly quick back to my set idle or close to it. Fresh motor, great compression, starts first kick no problem. Checked for air leaks with starting fluid all around the carb, carb boot, intake, exhaust, power valve cover, inside the flywheel cover, case gaskets...... All over the whole motor lol and not one change in idle. I also made sure to grease the power valve shaft and linkage area in the cylinder when I put the motor back together so I am 99% sure I don't have an air leak. Parts for a leak down tester are hard to find locally and none of the shops have them since we live in a 4t dominated world now. So I ask is this normal? This is a new 00 carb that appeared to be set up at the factory so I assumed the float level was good but to be honest I noticed this with the pj carb too and though it was just going for a shit.
Edited by kurtus, June 25, 2013 - 11:04 AM.