popping noise after deceleration after removing air pump
Posted February 25, 2006 - 04:15 PM
Posted February 25, 2006 - 04:46 PM
well i have rejetted 2 times bigger pilot forget size(one that came with gytr air removal kit) and have went 170 main, still popping!!! bike runs awesome but the pop has to go!!! i done the full gytr air removal kit, except for holes in airbox. i posted before and had lots of replies obout the jd jet kit. does this totally eliminate the pop?? i dont want to have to take the carb off again.like i said it rips!!! but that popping is gettting on my nerves bad!! will the cut out in the airbox help?? i got a 172 jet coming was gonna try that. thanks guys!!
air leak somewhere in the exhaust? 172 seems big, maybe a 168 or 165? Excess unburnt fuel will pop on decel, especialy if it gets some additional air.
Posted February 26, 2006 - 08:27 PM
n.b. - I ride from 0 ~ 5000' in Australia and with a GYT-R exhaust (mmm)
1. Are you sure that the needle you are running isn't that stupid 'one clip position' thing that the bike comes with - it is pretty lean and a good idea to get rid of it
2. There may be an air leak (air boot, exhaust flange or AIS ports) causing the bike to run lean (and pop) and possibly a little warmer as well
3. This is trivial but important - you must make sure that the carb sits level because if it leans a little to the side and your float is adjusted near its maximum it can cause popping/flooding and difficulty in starting - this i know from experience (and a clever Yamaha service tech !) - the difference is noticeable (especialy starting)
Good luck trying these suggestions ...
Posted February 26, 2006 - 11:14 PM
Posted February 28, 2006 - 11:44 PM
Posted March 01, 2006 - 03:13 PM
If you watch road racing, motorcycle or cars, you'll see flames coming out the exhaust as they enter the turns-same issue....live with it!