Kawasaki kmx 125

HardDriver · Nova Slayer Joined: 26 Feb 2014 Karma :

And also, what difference between fully synthetic 2 stroke oil and semi or mineral?

Also, why fully synthetic oil in different manufacture price is not the same? Or it's just for money making in shop's, or repsol, castrol, valvoline, motul and so one are the same oil? For 2 stroke?

Also, if you haven't read my other post, this engine is 1992, but in pretty good condition, so I'm not harm my engine yes?

dangerousdave · Traffic Copper Joined: 22 Apr 2011 Karma :

dangerousdave · Traffic Copper Joined: 22 Apr 2011 Karma :

HardDriver · Nova Slayer Joined: 26 Feb 2014 Karma :

dangerousdave · Traffic Copper Joined: 22 Apr 2011 Karma :

You can clean the exhaust, it's a tedious job so I try and avoid it.
Best way is using synthetic oil Tbh. Keeps the exhaust a lot cleaner.

You can let it idle for a couple of minutes before riding.Its one way of getting the bike up to working temperature and cold-seizing.

However I don't do this any more on advice from others as it means the oil and carbon condense in the exhaust at a fairly rapid rate when the exhaust is cold. But it is your choice, as if you ride the bike hard when cold you risk engine damage also.

You got to so what you are comfortable with.
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1988 Kawasaki KMX 200

Previous: Yamaha YZF1000, ZZR600, KMX200, DT50, KX80, CG125, PF50

HardDriver · Nova Slayer Joined: 26 Feb 2014 Karma :

So what happening, when carbon with oil condens in exchaust when engine is cold? How it's affecting bike? It's condesing when it is idling, not then driving? Because one guy here said oil in exchaust prevent from rusting, and if engine idling, low rpm, low oil injestion so it can't harmful (engine is not getting so much oil).

dangerousdave · Traffic Copper Joined: 22 Apr 2011 Karma :

Carbon build up in the exhaust changes the volume of the expansion chamber (exhaust - front section). The effect this has is a reduction in the performance of the engine.

I would recommend reading about how two-stroke expansion chambers work, as an owner of a two-stroke motorcycle, it will help explain some of the fundamentals of this type of engine. You will realise how important the exhaust is on this type of motorcycle, and how keeping it clean, and also free of leaks is key.

Cleaning the exhaust of a two-stroke motorcycle is part of the maintainance routine. A very thorough clean every year is a good rule of thumb.The carbon build up is very stubborn, cleaning involves use of corrosive chemicals, such as Caustic soda, to dissolve the carbon build up. Another method is heating the exhaust with a gas torch, and knocking the carbon out. I tend to use the first method, as it seems kinder to the exhaust, but both methods have their pro's and con's.
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1988 Kawasaki KMX 200

Previous: Yamaha YZF1000, ZZR600, KMX200, DT50, KX80, CG125, PF50

dangerousdave · Traffic Copper Joined: 22 Apr 2011 Karma :

Also never known rust to be a problem in a 2-stroke?

And nobody's telling you to turn your oil pump off? Did I say that? Just because you are letting the engine warm up when gently riding, doesn't mean it's getting no oil.
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1988 Kawasaki KMX 200

Previous: Yamaha YZF1000, ZZR600, KMX200, DT50, KX80, CG125, PF50