Excessive oil coming out of kips valve hose on 2006 KX250?

[2006kx250]

     First off Hello everyone!!  I have a 2006 kx250 that I bought new in August 2006.  When I  first bought the bike it would blow A little of oil out of the kips hose along with a little smoke.  I now only have about 15-20 hours on the bike at most.  When I crank the bike and let it warm up it will blow enough oil out of the hose to make a small puddle underneath the bike and blow some oil out of the exhaust and has a good bit of smoke until I blow it out.  The Bike runs really good with awesome power everywhere and seems to have real good compression.  The dealer rode it and says that I may have just gooped up the powervalve when I first started riding it and that I need to pull the head so I can clean it out.  They also recommend that I go ahead and at least change the ring and repack the silencer.  My bike is also more sensitive to fouling plugs(BR8ES) if I don't allow it to warm up really well before taking off.  When I first got the bike I mixed the Kawasaki oil 32:1 as factory reccomended but later went to mixing 40:1 because of the excessive oil.  I have bought some synthetic Motul oil mix that I am going to switch to.  The dealer said it would run better and have little or no smoke.  Do you guys know of any other thing that could be causing this oil problem or anything I should really check out while I have it apart.  Sorry for the really long message just trying to explain my ploblem well.

Thanks,
Dawson

[KXcam22]

Dawson,
  Nice bike.  I think what you are refering to is "spooge".  This is collected unburnt oil from your 2-cycle mix.  It is caused by a combination of a rich fuel/oil mixture and slightly too rich jetting.  Both of these will also cause your plug fouling problem.  I would suggest picking a good synthetic 2-stroke oil and sticking with it.  I'm a belray MC-1 man (last 28 yrs) but the motul oil is very good.  I suggest no richer that 50:1 (I run 60:1) not sure what the motul recommends.  Once you have standardized on an oil and a mix, then I would suggest slowly leaning out your jetting.  Once properly jetted your bike should never foul plugs.  I get a season on a plug.   Hope this helps. Cam.

One last tip:  try a BPR8ES.  The "P" projected tip runs cleaner. I run these always in my 500.

[KDXGarage]

Hi.  I bought a new 2005 KX250 less than two weeks ago.  My bike is very similar to yours, so maybe I can help.  Mine drips oil out of that hose also.  I had never heard of such a thing before.  I am used to digging it out later on a KDX after it is baked hard onto the power valves.  Hooray for whoever came up with the hose to help some.

I am not through with the break-in procedure yet.  I am currently running what the dealer put in it, which was said to be Kawasaki oil at 32:1 (which I have run for years on the KDX's).  After break-in, I will be switching to Bel-Ray H1R at 40:1.  Hopefully, over time, it will be cleaner on the power valve parts.

You may want to check your owner's manual (and hopefully) your service manual, to see what the stock plug is.  On mine, the cheap BR8ES is not even listed.  The BR8EIX is listed as an optional plug.  If you do not run the engine hard, a switch to a 7 heat range plug may benefit you.  I used to foul plus often on my 1994 KDX200 until I switched to a one step lower numbered heat range plug (hotter).  After that, my plugs were a lovely brown color, not black and dry.

The low end plugs (BR8ES) will foul quicker than a BR8EIX plug.  In my manual, it lists the BR8ECMVX (physically less tall), which is difficult to find.  I know the BR8ECM (non-VX version) is $10.19 at Rocky Mountain, so you may want to check on that.

If the projected tip sticks down further into the cylinder, that may not be a good idea.

IF, IF, IF your jetting is off, then by all means, start buying some $5 jets and get to testing it.

Remember to stick with one oil and gas mixture to have as few variables as possible during testing.  Also, 40:1 will allow more fuel into the engine than a 32:1 mixture.  A smaller jet would keep it from taking too big of a gulp.

I hope this helps some.  I will be jetting mine soon, so wish us both luck.

[KXcam22]

KDX,
  I used the H1R for a season but switched back to MC-1 since it gave me less spooge.  On my 92 500 I ran MC-1 (60:1) for 14 years without cleaning the powervalve.  When I took it apart a barely had to clean it and had hardly any wear at all.  Good oil. I know the H1-R is as good but on mine it definitely gave more spooge - even with spot on jetting.  cam.

[KDXGarage]

I bought a gallon of MC-1 a long time ago.  A gallon was $28 if that tells when.  I didn't use it long before stopping riding for years.

I will give the H1R a try.  I already have a small bottle or two I had been meaning to try.  I am just waiting for the break-in period to be over.  I don't have much time to ride, but plenty to work on it.  I'll keep an eye on it to see how the splooge goes.  I'll be changing rings every 5 minutes according to the owner's manual and service manual, so I should be able to clean the splooge off.  Heck, the new bike even has a splooge drain hose to help me out some! 

[2006kx250]

Thanks for the replies.  I just now got to check back in.  I have a wife that is due to have our little girl in about 2 weeks and I have a 3 year old son and also work 12 hour shifts so I stay a little busy.  Anyway, back to the bike.  I would just take the covers off of the KIPS and try and clean it out some and switch to the Motul but the dealer said to clean it well that I needed to remove it completely which involves removing the head so I can pull out the KIPS assembly because off the frame being so close on the front.  I live in the Northwestern part of Georgia and the factory jetting is usually close but I'll definitely try and dial it in if I switch to the Motul.  I did back out on the air mixture @1/2 turn more than stock and that seemed to help on the fouling plugs a little.  The only reason that I went to the NGK BR8ES was because the dealer gave me them as spares.  They are definitely cheaper.  I can get them at the local Advance Auto parts for around 2-3 dollars.  I guess it is spend a little more and get a plug that will be less prone to foul or buy 8 and spend more.  I'll buy one of the recommended plugs after I get the valve cleaned out and switch oil mix.  I don't think going to a "7" heat range would be good because I do ride at the local track pretty often.  I think what initially caused my splooge was when I done some trail riding with my Father-in-Law and lugged it around letting him catch up.  I never fouled a plug until then.  On another thought I have switched my Gear oil to the Belray Gearsaver. Is anyone else used this oil and how good is it in the long haul?

Thanks Again,
Dawson

[hughes]

The ole gear box oil question. I run ATF type f with geart results. The gear saver from bel-ray is good stuff. I wouldn't put any thing other than ATF in my gear box. Butter smooth shifting. What county do you live in? I live in gordon county.

[don46]

I don't typically get into oil discussions because everybody has their pet oil and it's the best ever. Having said that I had to weigh in on the gear oil question, The "Redline Gear Oil" is the best oil I've used, it expensive ($8 a quart) but in the long run well worth the money, your bike can sit for months, you can pull the side cover and the oil is still clinging to the walls, bearings basically everything, We use our K5's hard and with the redline the tranny runs much cooler. I've used ATF, motor oil and the likes, when you pull the side covers the oil is all at the bottom, runs off everything. As far as motor oils, there all good, not like the old days, if you find an oil readily available and you like, then use it.

[hughes]

I just removed the clutch cover from 500 this past weekend and the ATF was stuck to everything and the bike has been sitting for two months. Everybody has pet oils when dealing with trans oil.

[don46]

No offense Hughes, but I've used ATF before, have you used redline? If you had you'd know what I'm talking about, there is no comparsion period.

[hughes]

Nun Taken. I like hearing everbodies view points.

[2006kx250]

I didn't mean to get you guys that deeply into an oil disscussion.  In answer to Hughes I live in Walker County which is about 25 miles away from Dalton and about the same distance south from Chattanooga,TN.  Now a question for don46, Is there a weight number on the redline gear oil that you use and how often do you change it?

[fastducky]

Its not the oils or plugs. It's JETTING! Buy a "JD" jet kit and stop worrying about it. I have an 05 and have never fouled a plug and have very little spooge.
 $8.00 a quart for oil?........... WOW.  I use shell Rotella heavy duty oil in mine(rekluse recommens)$5.00 a gallon !!  I race or ride every weekend for the past 2 years and have the original clutch plates in it.
   I'll save the money on oil and buy more beer.  Rob

    P.S  Its actually the original plug in my bike also.....I feel a little guilty-lol.

[2006kx250]

Just an update and to help me get to my 10 posts so I can upload in the gallery,  I have searched many sites and do agree that my problem is probably just the jetting.  Everyone says the new KX250's are jetted rich.  I tried lowering my needle by raising the clip to the first position and it helped a little but still fouled a plug after a cold start.  After I get riding it doesn't foul,  just after a cool down period when we just start back riding.  I have ordered a #45 pilot jet for a starting place since that is what comes in the JD kit.  I am going to try that along with switching to the Motul 800 mixed at 40:1.  They claim you can run it at 50:1 as the Flying Hawaiian says he runs but I am not brave enough to try it.  I am also going to repack my silencer.