HELP ME PLEASE 1993 KX125 problem

philbo · 07-02-2009

Hi to everyone i'm new to the forum but pls dont hold it against me,i've just got my hands on a 93 kx 125 for a bit of fun it was a none runner but i got it going after a bit of messing about, now my problem is that wen i rev the throttle the transmission oil is bubbling i thought it was maybe water getting in but wen i drained the oil out it smelt of petrol so wher is the petrol coming from? and why is it bubbling? PLEASE HELP

nd4speed · 07-02-2009

I would guess there is a leak between the case halves in the area around the crankcase.

philbo · 07-03-2009

cheers i'm gunna have to take it apart and have a llok then. thanks for your help

KDXGarage · 07-03-2009

Do a pressure test and a vacuum test.

If your transmission oil is milky white, then the coolant is leaking into it, usually due to a worn seal on the impeller shaft.

philbo · 07-03-2009

but i dont think its coolant that has mixed with the oil as i said it smells like petrol but i cant think how it has got into the transmission?

QKENUF4U · 07-04-2009

bad seal between crankcase and trans ... time to pull it down and reseal it all....just be happy it went that way and not the other (sucking oil or water getting in)

philbo · 07-28-2009

cheers

philbo · 07-28-2009

thanks for the advice, just wondered is there a transmission breather pipe on the 93 kx 125?
cheers

dangerousdean19 · 07-29-2009

yes there is a breather it should be just underneath the reed block,a little plastic elbow,if this is blocked it will pressure the gearbox blowing oil out of any seal thats weak

philbo · 08-16-2009

dont suppose any one knows how much money i'd be looking at to get the seals replaced on my kx?

dangerousdean19 · 08-16-2009

i recently bought a full gasket set and oil seal set for £44 from the uk and that included posting to australia! its easier to get stuff from uk than it is out here!

dangerousdean19 · 08-16-2009

the seals are cheap just depends on which one you need to replace as to how much work its gonna be to do

07-02-2009	#1 (permalink)
philbo Newbie Join Date: Jul 2009 Posts: 6	HELP ME PLEASE 1993 KX125 problem Hi to everyone i'm new to the forum but pls dont hold it against me,i've just got my hands on a 93 kx 125 for a bit of fun it was a none runner but i got it going after a bit of messing about, now my problem is that wen i rev the throttle the transmission oil is bubbling i thought it was maybe water getting in but wen i drained the oil out it smelt of petrol so wher is the petrol coming from? and why is it bubbling? PLEASE HELP

07-03-2009	#4 (permalink)
KDXGarage Hey, lemme ride your bike BTK Expert Join Date: Dec 2005 Location: AL, USA Posts: 1,849	Do a pressure test and a vacuum test. If your transmission oil is milky white, then the coolant is leaking into it, usually due to a worn seal on the impeller shaft. __________________ DO NOT e-mail me asking for a pdf of a manual!! Get a Freaking JOB like I did, and buy one!

07-28-2009	#7 (permalink)
philbo Newbie Join Date: Jul 2009 Posts: 6	cheers Last edited by philbo : 07-28-2009 at 03:59 PM.

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07-02-2009	#2 (permalink)
nd4speed Can't find time to ride BTK Expert Join Date: Dec 2008 Location: MI Posts: 567	I would guess there is a leak between the case halves in the area around the crankcase.

07-03-2009	#3 (permalink)
philbo Newbie Join Date: Jul 2009 Posts: 6	cheers i'm gunna have to take it apart and have a llok then. thanks for your help

07-03-2009	#5 (permalink)
philbo Newbie Join Date: Jul 2009 Posts: 6	but i dont think its coolant that has mixed with the oil as i said it smells like petrol but i cant think how it has got into the transmission?

07-04-2009	#6 (permalink)
QKENUF4U AZ's Official Mechanic BTK Expert Join Date: Sep 2004 Location: lake havasu city arizona Posts: 4,554	bad seal between crankcase and trans ... time to pull it down and reseal it all....just be happy it went that way and not the other (sucking oil or water getting in)

07-28-2009	#8 (permalink)
philbo Newbie Join Date: Jul 2009 Posts: 6	thanks for the advice, just wondered is there a transmission breather pipe on the 93 kx 125? cheers

07-29-2009	#9 (permalink)
dangerousdean19 Still On The Kickstand Join Date: Jun 2009 Posts: 25	yes there is a breather it should be just underneath the reed block,a little plastic elbow,if this is blocked it will pressure the gearbox blowing oil out of any seal thats weak

08-16-2009	#10 (permalink)
philbo Newbie Join Date: Jul 2009 Posts: 6	dont suppose any one knows how much money i'd be looking at to get the seals replaced on my kx?

08-16-2009	#11 (permalink)
dangerousdean19 Still On The Kickstand Join Date: Jun 2009 Posts: 25	i recently bought a full gasket set and oil seal set for £44 from the uk and that included posting to australia! its easier to get stuff from uk than it is out here!

08-16-2009	#12 (permalink)
dangerousdean19 Still On The Kickstand Join Date: Jun 2009 Posts: 25	the seals are cheap just depends on which one you need to replace as to how much work its gonna be to do

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