Cold Weather And Pre Mix Ratios

D

duke

Member

Oct 9, 1999

484

0

• Nov 25, 2004

• #1

With the understanding that cold weather causes leaning conditions, I was wondering if a slight adjustment in pre mix ratio will aid in preventing any potential seizures? When I say cold weather, I am referring to Southern California "cold", say mid forties. My current jetting specs are just slightly rich.

 

S

smahala1286

Member

Sep 9, 2004

200

0

• Nov 25, 2004

• #2

Dont try and solve jetting issues by changing premix ratios

 

Canadian Dave

Super Power AssClown

Apr 28, 1999

1,202

0

• Nov 25, 2004

• #3

No I wouldn't add less premix oil to richen your jetting. If you are slightly rich now I'd wait and see how the bike runs and make the required jetting adjustments once the temps drop. Watch for hesitation when you crack the throttle open as an indication that things are running lean and do a quick plug reading at WOT.

David

 

D

duke

Member

Oct 9, 1999

484

0

• Nov 25, 2004

• Thread starter
• #4

So noted. I will make note of "lean" symptoms and make any necessary jetting changes. Thank you

 

R

RBSOB

Member

Jun 24, 2004

56

0

• Nov 25, 2004

• #5

Both my KDX and my sons hi-perf YZ are running noticably stronger in the colder November air. Guess we were probably jetted a bit too rich over the summer. As CD noted above, wait and see how it runs, you might be pleasantly suprised. Jim G