data.3news-bydate.train.rec.motorcycles.104857 Maven / Gradle / Ivy

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From: [email protected] (Ken Murphy)
Subject: Re: Death of a 2 stroke - why did it die?
Organization: Array Microsystems, Colorado Springs, CO. USA
Lines: 39
X-Newsreader: TIN [version 1.1 PL8]

Zebee Johnstone ([email protected]) wrote:

: Now for those who have read this far - 

: 	Why did it rev at idle like that?  Is water in the fuel an
: acceptable reaason or were they having me on?

Sound like the pilot circuit was say lean/clogged.  I don't think
water would cause a problem like this, but?

: 	Apparently the oil pump is doing its job, and there was plenty
: of oil.  Why did it seize?

See above.  Were you by chance coasting when it stuck?  On a two stroke
you only have (substantial) lubrication when you are giving the bike gas.
If it was lean on the pilot, that's why it stuck.

: Oh, BTW - THe motor had been rebuilt just before I left Adelaide, so had
: done about 1600 miles when it blew.  It was rebuilt because it had been
: seized at some time before we got it, and it looked like that seizure
: had happened at low mileage, because there were still hone marks in the
: bore.

: The rebuild we did consisted of a total tear down, new piston, rings,
: small end bearing, and new gearbox bearings.  Big end and rod judged
: OK.


: Any ideas folks?

You mentioned an aftermarket carb?  (I deleted the text)  Looks like 
(to me) that's where your problem is.

:      Zebee Johnstone  DoD #605   | You don't own an Italian motorcycle 


  O                
  MerfMan 
_/ \_