I have 02 sp700 the y pipe gets very red hot when riding. so red hot last night seen a spark come off it. runs good not to lean. I have done everything to fix it timing, carb, muffler doesn't seem pluged. does anybody else ever see this problem. maybe its normal. been doing it for a year and no problems.

 

the fuel mixture has to be lean to do that, unless the engine is under full power then you check it.

 

Go out and ride it full throttle for as long as you can.....then shut it off right away, no idle. check your spark plugs........and look at the electrode's color.......get back to us......

 

dancoe4x4, If you do a search, I posted the same question about my '05 700 efi, I never noticed it on my sp600, but after hard wot riding, the y pipe on my 700efi would glow orange right where the "y" comes together. A plug check showed good, both plugs were golden brown. Shortly after, I installed the sp800 header pipe, and have since decided that the exhaust is just so restrictive where the y comes togather for the 700 twins, it causes it to get so hot it glows. With the 800 header pipe (Duel Pipes) I have never noticed it glowing, and it sounds a lot better. The plugs still look nice and golden brown, even with the sp800 intake snorkle, and a k&n filter.