Engine problems

[Speed Monkey]

hey guys,
I have recently bought a new 125cc dhz pit bike of ebay, an had done only a little bit of riding befor my bike started to blow white smoke out of the exhaust. An i was just wondering wat has caused this. Also whether it is oil or petrol.
Cheers Cary

 

[Cactus Jack]

Describe how you ran it in .... and what you did ..... ie changed the oil , methodically loaded the motor to bed the rings in etc .... etc ...

 

[Worm]

Yeah, both my chinas did this with the first couple of tanks of fuel. No probs since. If it still does after a few tanks of fuel you may have to put up with it until the motor dies

 

[Speed Monkey]

well the manual that came with it sed to ride it easy an not to rev hard for the first tank so i did that an probly for half of the second but then came across sum hill climbs and after i had got to the top of them i noticed smoke cuming out of the exhaust so i rode it straight home. I dont know to much about fixing the engine so i havnt touched it yet. I wanted to find the problem before i started to fiddle around with it.

 

[Speed Monkey]

ohh u serios? so there isnt anything i can do to stop this from hapening?

 

[Coxy]

Engine Problem

Did you run the engine in when you got it?

 

[Speed Monkey]

I didnt rev hard untill bout half way through the 2nd tank of petrol. does any one know whether it is the petrol or oil making the smoke?

 

[Custom]

white smoke= oil
black smoke= petrol

 

[Sidney]

maybe you did what jono did and went too hard on the engine from a hillclimb.

I can't remember what colour smoke his was blowing though

 

[Speed Monkey]

ohh ok. yer im regretin goin up those hills now lol thanks for the help. Looks like i will have ta pull it apart.

 

[Worm]

Nah man, I reckon it will be ok. Mine was blowing white smoke for a few tanks, more so when I was going up hills/under load. Just give the motor a chance to bed in proper. Worst case it will blow smoke and u goto top the oil up every few rides.. no big deal rly. But I reckon u will be sweet after another tank or two

 

[Speed Monkey]

I think there r bigger problems. coz inside the exhaust is a hell of a lot of oil. an i took apart the engine an i think the valve needs ajusting, but dnt no how to do that

 

[edzy]

take it into a moty shop/machanic

 

[Speed Monkey]

yer i think i will have to aswell lol