Problume Bike

[18aprilia]

my rs125 is great bike to ride, but when ever i ride it to hard like over 6000revs loads of smoke poors out of the exhuast, I normally take it down to the palace pier to warm her up, and spend about 20 mins just to make sure. but when ever i ride it for along time above 6000 revs after awhile the exhuast starts to burn, (burning smoke) its a real pain in the ass, becuase i have become paranoid about going over 6000 revs, just the other day a scooter passed me, which was embarssing... my rs125 is still half power dunno if that has anything to do with it???

i warm it up till about 70 maybe 65 then normally take off.....
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Supra King

[BlueNinja]

I dont know heaps about 2 strokes, but I would assume its a build up of 2 stroke oil in the exhaust, and then when you do over 6000RPM, the exhaust heats up enough for this oil build up to start burning off. If thats the cause, I wouldnt worry.

If its the piston rings, you will notice a performance difference. So I wouldnt worry!
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Big Kawasaki ZXR 400 project here:
https://www.theundertaking.com/index.php?showtopic=483

[mirax]

do you have a power value fitted to the bike ???

[mirax]

if you do it might be a case of cleaning it, it could be sticking while its trying to open causing it to smoke

[westendboy7]

In my experience strokers smoke anyway

[BikerBen]

[haGGard]

[Whitetrash]

Could be too much oil going in. i had the same problem
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No body likes me,
Every body hates me,
Think I'll go and eat worms!

[tatters]

could be:


Runing the bike on cheap nasty two-stroke oil

sitting in traffic ie. riding slowly for long peroids causing a build up of oil

leaking crank seal, gearbox oil buring in the cylinder (unlikey)

oil pump set too rich


simular problem on my right cylinder on kr1s at the moment due to the oil pump set too rich. (can,t be bother to sort it)
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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

[Stu_666]

Yeah, it does'nt sound normal to be honest. Normally when I start my RS up there's a fair bit of white smoke coming out of it whilst it warms up then it settles down. Can get it where if I suddenly accelerate from standstill some blackish smoke gets chucked out.

[Keith]

[Robby]

Its smoking because you're not thrashing.

Just thrash it, enjoy the smoke. Its meant to do it. After a good bit of thrashing it'll smoke less.

[Wave2k]

ive seen quite alot of 2-strokes with this prooobluuuume
when they hit the powerband a ploom of smoke pumps out
usually stops after a while
just razz it
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Ducati 1299 Panigale
2009 Corvette C6 z51
RS125->CBR400->RXS100->GSXR750K2->Ducati749S->CBR600RR5->TL1000R->DRz400->RSVR1000->Honda VTR SP1->CBR400->GSXR1000K6->Honda H100->CBR600RR3->Ducati1299

[BlueNinja]

60000RPM isnt much for a 2 stroke anyway.. keep thrashing it. But if theres a performance decrease, have it seen too
____________________
Big Kawasaki ZXR 400 project here:
https://www.theundertaking.com/index.php?showtopic=483

[Jrod]

[Frost]

It's a 2 stroke, if it aint smoking, it aint running.

Don't worry about smoke, so long as it isn't white. The higher you rev it the more oil it gets, so it won't seize.

Check the oil pump to make sure it's delivering the correct amount of oil. You might want to check that the choke isnt sticking.

[ANDYNIC]

Your exhaust is clogged up. Remove the baffle from the end of the exhaust and burn all the carbon off using a blow lamp. To do a proper job you also need to clean out the exhaust . After removing the exhaust jam a potato in the end where it fits to the downpipe so that your exhaust is water tight. Now fill your exhaust with a strong solution of caustic soda which can be bought from most diy stores. Be sure to follow the instructions as you have to add the granules to water.Make sure you wear gloves.Leave to soak for three days. Once you have done this check the oil pump is set correctly and give it a good high speed thrash regularly to keep it clear.

[satans_BIG_helper]

have you cleaned your exhaust out yet m8 ???

I would deffinately do so as on the restricted/half power 2T's they seem to get full of crap very quickly