flyboy1294
11-01-2009, 05:59 PM
Hey guys,
I'm a 400ex guy, and a fairly noobish one at that. But my family owns a 300ex that isn't mine, but I'm still responsible for the maintenance of it and I only have time to fool with it around 2-4 times a month, so if you all could help me figure this out, when I get back I'll just try to get it put back together and save some time.
Here is the deal,
stock 300ex (Moose Air-filter, but it's not different than stock.) and the jetting was 'ok' this summer. Maybe a bit in the lean or rich direction, but still well tuned enough to where I thought it was good to ride.
About 2 months ago, it started acts a bit odd. It would bog when you'd punch the gas (used to be flawless), but it wasn't enough to make me concerned.
Then 2 weeks ago, it was bogging significantly, being extremely cold natured, and not performing as it used to. I changed the sparkplug because it seemed to me that might be the issue, also I cleaned the airfilter real good...
This week, however, it has gotten to the point where its not ridable. The bogging is not only when you rev the bike in neutral, but when you try to change gears it will bog and cut off and throw you over the handle bars if you're not careful. I took out the plug, and checked it, its like burnt black, and it's less than a week old. I'm guessing the problem is the jetting. What do you guys think, lean or rich? And what size jets do you recommend?
Thanks for helping out a fellow noob.
:macho
I'm a 400ex guy, and a fairly noobish one at that. But my family owns a 300ex that isn't mine, but I'm still responsible for the maintenance of it and I only have time to fool with it around 2-4 times a month, so if you all could help me figure this out, when I get back I'll just try to get it put back together and save some time.
Here is the deal,
stock 300ex (Moose Air-filter, but it's not different than stock.) and the jetting was 'ok' this summer. Maybe a bit in the lean or rich direction, but still well tuned enough to where I thought it was good to ride.
About 2 months ago, it started acts a bit odd. It would bog when you'd punch the gas (used to be flawless), but it wasn't enough to make me concerned.
Then 2 weeks ago, it was bogging significantly, being extremely cold natured, and not performing as it used to. I changed the sparkplug because it seemed to me that might be the issue, also I cleaned the airfilter real good...
This week, however, it has gotten to the point where its not ridable. The bogging is not only when you rev the bike in neutral, but when you try to change gears it will bog and cut off and throw you over the handle bars if you're not careful. I took out the plug, and checked it, its like burnt black, and it's less than a week old. I'm guessing the problem is the jetting. What do you guys think, lean or rich? And what size jets do you recommend?
Thanks for helping out a fellow noob.
:macho