TOO much "Spooge" out the pipe!

L

lakota

Member

Apr 24, 2003

19

0

• Apr 25, 2003

• #1

I've got a lot of spooge coming out the exhaust on my '90 RM125. It runs decent through the powerband, but it idles erratic sometimes. I've just re-packed the silencer and figure if I don't fix it I'll be packing again soon and cleaning carbon out of everything.

I'm going to start with a smaller pilot and see if that changes the idle problem. Then go from there. Any suggestions any further? I have no experience with jetting. :(
I've read some basics online, but that's all I have to go on.

You can see a picture of how much is coming out the exhaust, and the spark plug condition after 1 hr. of riding - cut and paste the link below.

image1ex.villagephotos.com/2290835.jpg

 

Last edited by a moderator: Apr 25, 2003

Z

Zenith

Member

Jan 11, 2001

483

0

• Apr 25, 2003

• #2

Yep that's a fair amount of spooge alright!
The erratic idle would generally be caused by lean pilot jetting, not rich. So it must be quite rich on the needle or main circuit. Here are a couple more good jetting guides to read through, the more guides you can read the better!

Eric Gorr's guide - http://www.ericgorr.com/techarticles/carbtuning.html
Carb 101 - http://www.motocross.com/motoprof/moto/mcycle/carb101/carb101.html

 

Last edited by a moderator: Apr 26, 2003

K

kevinkdx

Member

Mar 25, 2001

481

0

• Apr 26, 2003

• #3

You might also consider mixing your gas at 40:1 instead of 32:1 which i am assuming you are using right now. You will need to rejet for this change if I am not mistaken.

 

J

Joepro9

Member

Feb 17, 2001

503

0

• Apr 26, 2003

• #4

Originally posted by kevinkdx
You might also consider mixing your gas at 40:1 instead of 32:1 which i am assuming you are using right now. You will need to rejet for this change if I am not mistaken.

Click to expand...

It does not matter what ratio he runs at, if its not jetted correctly it will spooge. Period. My cr had the idle problem at times, go to a bigger pilot. My gues is that your jetting needs are in the needle, but the main wont hurt to dial in.

 

L

lakota

Member

Apr 24, 2003

19

0

• Apr 26, 2003

• Thread starter
• #5

Now,
Where can I purchase the jets from?
I checked with my local dealer and they get $12 each for pilot jets! I'm gonna have a $100 in Pilot/main jets to "Experiment" with.

 

holeshot

Crazy Russian

LIFETIME SPONSOR

Jan 25, 2000

1,822

0

• Apr 26, 2003

• #6

Before you play with the jetting, you'd have to make sure that the motor is in good condition. A leaking crank seal on the tranny side or other worn out parts could cause spooge problems.

 

J

Joepro9

Member

Feb 17, 2001

503

0

• Apr 27, 2003

• #7

time to find a new dealer thats where, that is rediculous, the most i ever paid war 4.50 for a jet.

 

0

01RM125

~SPONSOR~

Oct 16, 2002

35

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• Apr 27, 2003

• #8

My dealer charges $9.95 for Main Jet/Pilot; and has none in stock. So I had to prepay, then wait a week. Am I the only one in my area that actually jets his bike? I don't think so, probably just the only one dumb enough to pay $10 for a jet next week (I'll pay you today for a hamburger next Tuesday:-)). Like the Honda dealer that had to "special order" a chain for my CBR (such an "odd" part to wear out).

http://www.carbparts.com/ is the best answer I've come up with.

 

S

Studboy

Thinks he can ride

Dec 2, 2001

1,818

0

• Apr 27, 2003

• #9

My cheapest local dealer charges $4 for main's and $6 for pilots.