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(Yet another) Spooge Question...

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#1
I know theres stickys and links for this, but I'm more looking for experienced opinions.....
The bike is a '04 YZ125, I live at an elevation of about 2000 feet. The bike absolutely rips, and has no running problems to speak of, though, like any 2 stroke, will foul plugs when ran at low speeds too long without "cleaning it out"(reving it out), though this hardly ever happens, as I tend to keep it on the pipe. My question is about the insane amount of spooge I'm dealing with. The stuff is running out of the collar, shooting out of the pipe, and even though the bike has low hours, I repacked the silencer, and the old packing was absolutely SOAKED with oily spooge. Too rich?? I pulled the plug(br9es) after riding, and although slightly wet, it was a golden tan, clean color. I turned out the pilot air screw to 2 1/2 turns to try to lean it out a little at low speeds, but that didnt seem to do much, though it did increase throttle response somewhat. What would you suggest my next step should be? The main jet, or maybe needle jet clip position? Which one first? The main jet thats in it now is a 410, though when I bought the bike they gave me a 400, and a 420 extra, and also another needle jet(not sure if different size from the one thats in the bike?) I was thinking maybe I should first try the 400 main jet to see if that helps?? Just wondering what has worked best for you guys when you have alot of spooge, even though the bike runs absolutely killer. BTW, I run a YamaLube mix at 32:1. Thanx for any advise you can give me!
 
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#2
at a higher evelation the air is thinner i cant rembember if you go richer or leaner. but the 32:1 is wat you want and if there is a lot of carp comming out of the pipe it might be time for new muffler packing.
 
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#3
http://dirtrider.net/forums3/showthread.php?t=92818&page=1&pp=20 And many,many more! I do not believe that is the correct plug for that bike,it is not the reason you are fouling plugs,it will be the reason your topend frags though! You need to learn to read your plugs and to identify exactly what each circuit does and rule out any mechanical issues.And using the cheap plugs to jet with is a good idea,just no prolonged running on that welding plug!
 

SpDyKen

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#4
1st, Read up on all of the jetting threads you can find.

2nd, Start leaning your pilot circuit (this will take some time and some brass.)

3rd, Enjoy your increasingly crisp low-end; you will be amazed at how much you will gain! :cool: (I know from my experiences with my similar, '03 YZ125 at 1000'.)
 
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#5
whenfoxforks-ruled said:
http://dirtrider.net/forums3/showthread.php?t=92818&page=1&pp=20 And many,many more! I do not believe that is the correct plug for that bike,it is not the reason you are fouling plugs,it will be the reason your topend frags though! You need to learn to read your plugs and to identify exactly what each circuit does and rule out any mechanical issues.And using the cheap plugs to jet with is a good idea,just no prolonged running on that welding plug!
what? br9eg are stock plugs for 125's. br9es is cooler than most plugs. the larger the nuber, the cooler the heat range.

learn you facts before you start posting cr@p.
 
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Chili

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#6
Stock plug for a 04 Yamaha YZ125 is a BR9EG, not an ES, although I highly doubt this has any factor on your troubles. You will need to learn how to jet the bike and you'll be fine, I can lug around either of our 2 strokes and never foul a plug.
 
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#7
95xr250----As I said, I just repacked the silencer, so that cant be it....

Chili---You are correct, I just looked and it is a br9eg, not es..my mistake. Also, I really never foul plugs either, I just mean that it will if you let it run too low too long.

So what jet would I try to adjust first? I just dont want to screw with any that isnt neccessary.

SpDyKen---- what would I do to the pilot circuit?? As I said, I already turned out the pilot air screw to 2 1/2 turns out, from the stock 1 3/4 turns out...helped a little with low speed throttle response, but not much with the spooge. Do you suggest changing the pilot jet itself, or is there another pilot adjustment Im not aware of?

Whats wierd to me is that the bike runs so good besides the spooge, perfect throttle response,especially at 1/4 to wot, and it readily gets on the pipe and hits like old school Tyson, though i guess it could be a little crisper at low speeds. Ive ridden for years, but new to jetting myself, so I just need to know which jet you guys would screw with first(the most likely culprit).

Keep it on the pipe,

Owens
 

SpDyKen

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#9
SpDyKen said:
1st, Read up on all of the jetting threads you can find.

2nd, Start leaning your pilot circuit (this will take some time and some brass.)

3rd, Enjoy your increasingly crisp low-end; you will be amazed at how much you will gain! :cool: (I know from my experiences with my similar, '03 YZ125 at 1000'.)
I think you skipped step # 1
 
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#10
Black helicopter been seen around here?Chili?New bikes are generally fat on bottom.They would rather sell you a bike eating plugs than engines.You can not sell a bike jetted for the whole world!The last time I changed a plug due to fouling had to be back when we were erroneously messing with cylinder volumes,mid 70's.Read and save the environment,say no to spooge!
 
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#11
Man, just drop the pilot jet one size and reset your air screw, then see how it acts. This will probably solve your problem. If the packing is already soaked you will have to repack the can again, but that needs to be done from time to time anyway. Keep in mind that no one can jet your bike for you over the internet and don't blame me if this isn't the perfect answer for your spooge problem, read up on jetting, roll up your sleaves and go for it bro!
 
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#12
thanx alot griff!! some people just wont give us newbs a straight answer, thats all i was looking for! i appreciate it! I know theres threads and stickys, but for someone who hasnt really ever messed with the jetting, it can all be kind of confusing....not everyone is a master mechanic. so Ill try to get a leaner pilot jet and see if that helps. any recomondations as to what size i should try??

Owens
 

Chili

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#13
I gave you a very straight answer. Can't be bothered to help those who won't try help themselves. Most would decipher your message as "I know the info is available to me but I'm too lazy to take the time to read and try to learn it so can someone else do my homework for me please."
 

SpDyKen

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#14
Owens187 said:
any recomondations as to what size i should try??

Owens
One size _______. (Now think, for a moment. Would that be one size smaller, or one size larger?)

Do your homework. Read; experiment for yourself; learn.
 

uts

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#15
Your bike may indeed benefit from jetting changes. Just remember that spooge doesn't always mean too rich as far as performance goes. I can think of at least 3 - 2 strokes I have had experience with that ran much better when showing rich symptoms ie spooge and ocasional plug fouling. And believe me I went through the jetting completly.
My current bike , an old IT465 is a perfect example. It spooges some and will foul a plug occasionally, but lean the jetting from where I have it now, in any of the circuits (pilot, needle and main) and it looses power and or throttle response.
Just keep it in mind anyway.

Good luck
 
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