I've taken the time to jet before, and it is a pita. I think I pulled my carbs a half dozen times to change jets and needle positions. I used the factory pro tuning guide as a reference. However I found that you should set the pilot circuits first then go to main jet sizes then needle position. A valve job and sync should be done first, then I set the pilots then check the sync again. Pretty much if you are holding 3/4 throttle to maintain 70 mph your main jets are too small. Once you go through the process you can just tell what it needs just by riding a bike. Then again if you can drop $500 pay for a dyno tune from a reputable shop.
Allen Thomas On Feb 13, 2015 9:06 PM, "Jeremy" <[email protected]> wrote: > Stock airbox and filter with stock exhaust? If yes there is a carburetor > issue, valve adjustment and sync. If no then jetting is needed. A common > practice is to open the idle fuel mix open, but the correct way is a jet > kit and start with the main jet, then main needle height, then float level > and last pilot and a/f. The carb circuits work together one part affects > the other. And it's trial and error, a dyno tune is best. Factory pro has > a good chart on dialing in. I personally never good at it and always just > stick with stock. You'll never be able to dial in bike with out loading > it, so road or dyno is the only options. And only change one thing at a > time then try again. > > Sent from my iPhone > > > On Feb 13, 2015, at 5:00 PM, Tommy Hill <[email protected]> wrote: > > > > Allen, > > > > Especially you, but anyone with tips. Paid someone to set it with a > probe. Wanted it perfect, but It ain't right! He will fix, but it is over > an hour away. In a slightly too high a gear, it accelerates, but skips a > little. Seems rich(?). So I leaned it half a turn. Much better but still > slight skipping. Another quarter turn made it worse. Suggestions? > Possibly plugs? Plugs look fine, but no idea how old they are. > > > > -- > > You received this message because you are subscribed to the Google > Groups "Nighthawk Motorcycle Lovers!" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to [email protected]. > > To post to this group, send email to [email protected]. > > Visit this group at http://groups.google.com/group/nighthawk_lovers. > > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/nighthawk_lovers. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/nighthawk_lovers. For more options, visit https://groups.google.com/d/optout.
