Kz700 blows smoke when cold

i would get the seals replaced asap or as soon as you can afford it the
dealer should be able to do this without pulling the head then you can get a
valve adjustment at the same time and save some money if you dont care much
about the bike then just run it should last a few years anyway
"Masospaghetti" <gtg803xREMOVE.DeleteThis@mail.gatech.edu> wrote in message
news:docpjo$nm8$1@news-int2.gatech.edu...
> Hey all - working on a 1984 KZ700 with 8700 miles. When starting in the
> morning, having sat for a day, the bike will blow a lot of smoke out the
> tailpipes, sometimes both pipes, sometimes one or the other. The smoke
> looks bluish. I asked a local mechanic and he said that it doesn't mean
> anything.
> Am I staring at a mechanical nightmare in the near future? Valve stem
> seals? The motor runs and sounds great once it warms up.
 >> Stay informed about: Kz700 blows smoke when cold 

I'm A bike Mechanic, don't automatically Replace any seals, rings, gaskets,ect... It is common for older model bikes to smoke when cold. just go to your local mechanic and have him pop your head and inspect it, if everything is cool, then dont worry about it. if you do need anything replaced, he's already got the head off so he can do it while you sit and enjoy tea and crumpets. haha

P.S. make shure your Oil level is just about 2/16 of an inch below full on your dip stick, it's best for any four stroke engine.
 >> Stay informed about: Kz700 blows smoke when cold 

>On Wed, 21 Dec 2005 18:48:10 -0500, Masospaghetti <gtg803xREMOVE DeleteThis @mail.gatech.edu> wrote:

>Hey all - working on a 1984 KZ700 with 8700 miles. When starting in the
>morning, having sat for a day, the bike will blow a lot of smoke out the
>tailpipes, sometimes both pipes, sometimes one or the other. The smoke
>looks bluish. I asked a local mechanic and he said that it doesn't mean
>anything.
>Am I staring at a mechanical nightmare in the near future? Valve stem
>seals? The motor runs and sounds great once it warms up.


Rules of thumb:
It if is black smoke, you are burning a rich fuel/air mixture.
White smoke, you are burning water.
If it is blue smoke, you are burning a bit of oil.

Blue smoke on start-up, which goes away after warm-up, is leaking
valve guide seals. (oil is seeping past the seals after the previous
run)
Continuous blue smoke, which never goes away, is compression/oil
leaking past your rings (both ways).


Given your symptoms, I'd say leaking valve guide seals. It is not a
real problem, and will be easy to fix during your next needed top end
job. Any good quality top end gasket set for 4-strokes will have valve
guide seals included.

Jim Cook
Smackover Racing
Gas Gas DE300
Team LAGNAF
www.smackovermotorsports.com
 >> Stay informed about: Kz700 blows smoke when cold