HELP!!!!!!!!!!!!!!!!!!

fordylad · L Plate Warrior Joined: 14 Apr 2005 Karma :

hi,I am in need of some serious help. i have recently bought my first bike,(for field use) it is a 1992 cr 125. the bike was fine until i came to change the gearbox oil. when i drained the box there was not a lot of oil in there to begin with, so drained that off. My dad not having a bike in years said it would be fine to use normal car oil,as long as it was the same viscosity.so filled it up. i used 10w-40.started her up, and smoked like hell!!!!! so drained the box,flushed it out with neat petrol and left it over nite. re-filled the box with proper recommended oil. started her up and still smoking like a house on fire! ive ran it 4 a while to burn off any excess oil and still nothing. ive just re-packed the rear exhaust box, and it has had a new plug.also there is quite a lot of oil coming from the exhaust! have just set up the needle clip, float and mixture but still no difference. can any one help me PLEASE!!!
thanks

cagiva gezzer · World Chat Champion Joined: 17 Mar 2003 Karma :

Understand the basic ideas of two and four strokes and you'll be fine.

If you think its too smokey double check your premix ratios.
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"because one stroke isnt enough and four strokes waste two"

fordylad · L Plate Warrior Joined: 14 Apr 2005 Karma :

yeah i have got the right mixture sated in the workshop manual. i snt know what else it cud be

tatters · Exxon Valdez Joined: 04 Jan 2004 Karma :

could be a leaking crank seal between the clutch housing and the crankcase. which would explain why there was little gearbox oil beacuse the engine has been buring it.

which means you would have to strip the engine and spit the crankcase to replace the seal on the crank.
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Past:NRG50,AF1125(x2),NSR125RR,ZZR250,CX500,VFR400,KR1S,ZZR600(x2),CB400N,YZF1000(x2),KH125,Z200,FX400R,CBR954RR(x2)GPZ500S,GT550,VFR750F(x2),RD350N,XR650R,CBR600F,CB250,KDX250,YZF750R,CRM250,400EXC,KLR650,TTR600RE,DR350S,R100GSPD,RGV250,VMAX1200,DL650,KZ750 Present:G650XC,C12,CRF450X,1190ADV

fordylad · L Plate Warrior Joined: 14 Apr 2005 Karma :

the smoke it white though, and if it was burning the gearbox oil would it be black or dirty smoke. cuz at the mo it is just whitey blue

tatters · Exxon Valdez Joined: 04 Jan 2004 Karma :

nope gearbox oil burn,s white
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Past:NRG50,AF1125(x2),NSR125RR,ZZR250,CX500,VFR400,KR1S,ZZR600(x2),CB400N,YZF1000(x2),KH125,Z200,FX400R,CBR954RR(x2)GPZ500S,GT550,VFR750F(x2),RD350N,XR650R,CBR600F,CB250,KDX250,YZF750R,CRM250,400EXC,KLR650,TTR600RE,DR350S,R100GSPD,RGV250,VMAX1200,DL650,KZ750 Present:G650XC,C12,CRF450X,1190ADV

fordylad · L Plate Warrior Joined: 14 Apr 2005 Karma :

do you think that theres a chance of it being the seal on the end of the crank?
thanks 2 every one who has replied

tatters · Exxon Valdez Joined: 04 Jan 2004 Karma :

its a field bike so leave it, just make sure you check and top up the oil now and again. just means the piston is getting alot more lubcation than normal. Smile

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Past:NRG50,AF1125(x2),NSR125RR,ZZR250,CX500,VFR400,KR1S,ZZR600(x2),CB400N,YZF1000(x2),KH125,Z200,FX400R,CBR954RR(x2)GPZ500S,GT550,VFR750F(x2),RD350N,XR650R,CBR600F,CB250,KDX250,YZF750R,CRM250,400EXC,KLR650,TTR600RE,DR350S,R100GSPD,RGV250,VMAX1200,DL650,KZ750 Present:G650XC,C12,CRF450X,1190ADV

fordylad · L Plate Warrior Joined: 14 Apr 2005 Karma :

ok cheers 4 all your help!