Honda4lyphe
05-19-2007, 11:40 PM
I read alot of threads through search and i cant seem to get a strait answer. On my 04 ex my only mod is a white bros e-series slip on pipe. The previous owner put it on, i asked him if it was jetted and he said no.
Today i got to working on the jetting and i noticed he had a spark plug about a quarter inch shorter then it needed to be..i got that straitened out and put a 42 pilot jet and a 155 main jet to start. Before this i had the air box lid off because i followed some misleading information about it (the bike ran ok though, also i took my ex to my shop so i dont have the lid handy right now) so after i rejetted it i started it, ran it at 3/4 throttle for 5 seconds and checked the plug, the tip was a little black and had a normal brown (not light, not dark) but the rest of the plug was black, i changed to a 160 jet and repeated, this jet came out lighter brown and it was pretty clean but in the time i was running it i couldnt go past 3/4 throttle meaning it wouldnt go to full throttle, the same happend with the 155 main. I think 160 should be alright if i drill 2 quarter holes in my airbox lid, the question is do you think that will solve my problem with not being able to get it to full throttle? When i try it acts like it sucked too much air, the rev fades down fast if that makes any sence.
Ok, with that out of the way how much out do i need to turn the fuel screw? And im not too sure if im looking at the right thing, is it the big rigged bolt that connects to a fuel tube, the one that changes the idle? Or is that completly different?
Thanks! Any more suggestions would be appriciated.
Today i got to working on the jetting and i noticed he had a spark plug about a quarter inch shorter then it needed to be..i got that straitened out and put a 42 pilot jet and a 155 main jet to start. Before this i had the air box lid off because i followed some misleading information about it (the bike ran ok though, also i took my ex to my shop so i dont have the lid handy right now) so after i rejetted it i started it, ran it at 3/4 throttle for 5 seconds and checked the plug, the tip was a little black and had a normal brown (not light, not dark) but the rest of the plug was black, i changed to a 160 jet and repeated, this jet came out lighter brown and it was pretty clean but in the time i was running it i couldnt go past 3/4 throttle meaning it wouldnt go to full throttle, the same happend with the 155 main. I think 160 should be alright if i drill 2 quarter holes in my airbox lid, the question is do you think that will solve my problem with not being able to get it to full throttle? When i try it acts like it sucked too much air, the rev fades down fast if that makes any sence.
Ok, with that out of the way how much out do i need to turn the fuel screw? And im not too sure if im looking at the right thing, is it the big rigged bolt that connects to a fuel tube, the one that changes the idle? Or is that completly different?
Thanks! Any more suggestions would be appriciated.