Hey, My name is Mike and I'm a Newbie. I have a 99 yzf400 with a 'rebuild' carb, starts great, I have that routine down. But the bike is loosing power when accelerating, sounds like porky pig (stuttering and sputtering). D&E Yamaha said to pull the choke (richen up the mix, to see if it was jetting??) to see if the problem would go away, and it didn't. Their next suggestion was that the timing was off, maybe a valve out of adjustment.
The bike idles great. when not under load, I can blip the throttle and it sounds great. Air filter is in good shape, I have yet to pull the plug, but I don't think that the plug is the main issue.
Any suggestions?
The bike idles great. when not under load, I can blip the throttle and it sounds great. Air filter is in good shape, I have yet to pull the plug, but I don't think that the plug is the main issue.
Any suggestions?