stupid exploding engines, grrrr

I started the bike this afternoon and no sooner had I turned the key
then the engine starts rattling VERY loudly and a large cloud of white
smoke drifted up from the front of engine...not good!

Any ideas on just what the nature of the problem may be? Is the engine
totally fucked, or maybe not? It was only running for maybe 3 seconds
before I switched it off, so hopefully not long enough to stuff it too
badly. What are the odds though?

In the process of sorting a trailer to go pick it up and bring it
home, and then I'll start pulling bits off...just thought I'd ask you
lot for ideas, so I have a better idea whether I should be pulling it
apart to fix the engine or to replace it...


Damien
GPX250 -> CBR600 -> Shadow?

 

Is it a Honda ???

 

Indeed it is!



Damien
GPX250 -> CBR600 -> Shadow?

 

For once, I think the immortal line might actually be appropriate.....

you'll have to split the cases.

Most likely thing is valve meets piston, they have a loud disagreement
in which the valve punches hole in piston. I would assume the smoke
would then come out the exhaust though, not the front of the engine.
Might be the cam chain snapped (causing the above piston/valve
arguement)

Stu

 

Supplementary Question y'honour?

Have you tried spraying some WD40 on it?

Apparently if you don;t know what's wrong then try DubyaDee40.