250 Rebuilding KX250

Mihylo33 · Dec 9, 2015

adamrides646:
Why was it fouling plugs like a son of a bitch then? And my power valve being gummed up so bad.

Fuel rich and oil rich are 2 different things. Fuel rich will gum valves and foul plugs. So will bad gasoline. Oil rich will gum up plugs and cause your exhaust to smoke when the bike is turned off. Not having enough oil feeding the bearings is what usually seizes big end bearings and crank bearings. These may be oil starved if they were installed backwards. I would re-evaluate my jetting after this rebuild. You could be running lean on the bottom and way rich on top and that could cause the washing you see on your piston.

AdamRides87 · Dec 9, 2015

Mihylo33:
Fuel rich and oil rich are 2 different things. Fuel rich will gum valves and foul plugs. So will bad gasoline. Oil rich will gum up plugs and cause your exhaust to smoke when the bike is turned off. Not having enough oil feeding the bearings is what usually seizes big end bearings and crank bearings. These may be oil starved if they were installed backwards. I would re-evaluate my jetting after this rebuild. You could be running lean on the bottom and way rich on top and that could cause the washing you see on your piston.

Okay. Thank you. So what's the big end bearing

PALMER84ONE · Dec 9, 2015

Center of the crank, THE ROD... Big end, little end on piston, sparky!!! :picard:

AdamRides87 · Dec 9, 2015

PALMER84ONE:
Center of the crank, THE ROD... Big end, little end on piston, sparky!!!

Haha. Alright that was my bad. This is my first bottom end tear down. Cut me some slack lol

ossagp · Dec 10, 2015

Maybe it is the sign of the times that younger guys don't know where their big end is at? I just don't understand it.

PALMER84ONE · Dec 10, 2015

ossagp:
Maybe it is the sign of the times that younger guys don't know where their big end is at? I just don't understand it.

Touché

AdamRides87 · Dec 10, 2015

My girlfriend handles my crank usually

ossagp · Dec 10, 2015

Then stfu about the "unusual" times, and no one will ask.

AdamRides87 · Dec 10, 2015

ossagp:
Then stfu about the "unusual" times, and no one will ask.

PALMER84ONE · Dec 10, 2015

ossagp:
Then stfu about the "unusual" times, and no one will ask.

Andy, have you been drinking, or is dark all day phuckin with your head already?

Mihylo33 · Dec 11, 2015

ossagp:
Then stfu about the "unusual" times, and no one will ask.

Like when you wake up hung over and naked next to your second cousin wondering why you didn't get drunk with her sooner. Just sayin.....

Redordead89 · Dec 12, 2015

PALMER84ONE:
Andy, have you been drinking, or is dark all day phuckin with your head already?

Dark when you got to work and dark when you get home is :thumbsdown:

and any low riding sun that we do get just fks with you're vision ahead :crash:

so would almost prefer the dark all the time rather than 20 hrs with bleak daylight in between that we have here in Scotland. And my nikes are sticking to the decking :cool:

timoyz · Dec 12, 2015

Redordead89:
Dark when you go to work and dark when you get home is and any low riding sun that we do get just fks with you're vision ahead so would almost prefer the dark all the time rather than 20 hrs with bleak daylight in between that we have here in Scotland. And my nikes are sticking to the decking

That sounds like my schedule. :picard:

PALMER84ONE · Dec 12, 2015

timoyz:
That sounds like my schedule.

Shut up and get my shit done already! :smirk:

timoyz · Dec 13, 2015

Wow, that was rude. I told you by Christmas, I just didn't say which one :smirk: