Blowing smoke

**NDORFN** · 16th August 2009, 12:10

My '92 ZXR250 is blowing ALOT of smoke. So much that I think I might almost be pulled over for it. Factors are: It's NZ new so it's been sitting in Japan for probably over a year and has been sitting in the dealer in NZ for about a year (not sure if this is relevent but just to keep it scientific). It's obviously got no catalytic converter. It's got aftermarket cams/cam (no idea what difference they make or even if they're different to what it came with out of the factory). My guess is that it's a mixture thing but I don't have time to learn about how that works in detail right now so I'm looking for a quick fix in the meantime. Can anyone help?

Cheers - James

**Tony.OK** · 16th August 2009, 12:41

Being that its a 4 stroke I'm doubting a mixture problem.

What colour smoke? If its white/blue then its not a mixture thing, more likely to be worn oil rings or valve guides...........no quick fix really.

If its black smoke then it could be a mixture/overfuelling issue, though if its been sitting for a long time then the carbs prob need a good service.

**NDORFN** · 16th August 2009, 12:44

It's white smoke. The carbs were serviced not long ago. I've just been reading about white smoke generally meaning that it's burning coolant via a crack in the block

**sil3nt** · 16th August 2009, 12:51

You got this from a dealer? Take it back and have a bitch at them

(in a nice way of course

)

**NDORFN** · 16th August 2009, 12:55

Originally Posted by sil3ntwar

You got this from a dealer? Take it back and have a bitch at them

(in a nice way of course

)

Yeah with a 3 month warranty so I will be insisting they sort the problem, but before I do I'd like to get to the bottom of it with undeniable evidence so that they can't weasle thier way out of it. If it is a crack in the block, they might use a radiator sealant to temprarily fix the problem until it's outside of it's warranty.