bike smoking

P

paper racer

~SPONSOR~

Jun 13, 2001

61

0

• Oct 22, 2002

• #1

I have a 91 YZ250 with a new piston .30 over and new reeds, I also had my power valve fixed recently. After about 10-15 minutes of riding the bike starts smoking and has no power. I let it sit for awhile, started it up and it ran the same. Revved it out a bit while still smoking then rode it hard and it cleared up. This has happened both times I've been riding since I got the new piston.

 

S

Studboy

Thinks he can ride

Dec 2, 2001

1,818

0

• Oct 22, 2002

• #2

My 2 cents. Either your jetting is rich (pilot or main). Or you have a crank seal leaking letting gear oil reach the combustion chamber. Check the seal, check your gearbox oil level as well (watch to see if it changes).

 

T

The Honda Pilot

Member

Feb 25, 2001

394

1

• Oct 24, 2002

• #3

Maybe one of the seals on the head is letting radiator fluid in ? being that it was a new top end that gasket could have been messed up.

 

P

paper racer

~SPONSOR~

Jun 13, 2001

61

0

• Oct 24, 2002

• Thread starter
• #4

I bought new gaskets for it. Today when I rode it and it it started to lose power I just pinned it and it ran fine once it hit the powerband and it cleared up. The pilot air screw was only turned out 1 and should be turned out 1 3/4, I will try this on Sat.

 

I

IrishEKU

A General PITA.

LIFETIME SPONSOR

Apr 21, 2002

3,806

0

• Oct 24, 2002

• #5

Jetting.

Phillip

 

K

kev_rm

~SPONSOR~

Jun 7, 2002

195

0

• Oct 24, 2002

• #6

Jetting.

 

S

Stew312

Member

Jul 8, 2002

162

0

• Oct 24, 2002

• #7

Jetting