Leakdown test.

[spldart]

So... I've had this bike a couple weeks and I finally got my leakdown test done.
The gauge is one I've had a while and I've done various tests on car and
motorcycle engines.

I pull the plug and read it. Combustion seems good mixture and no oil
appears to be getting burned. (nice light tan coat on the electrodes)

Did some cold cranks and I'm getting 100 psi. Turn it over twice or turn it over
five times I'm getting 100 psi.

Question is this... This seems 15 to 25 psi low, so, is there a mechanic in the house
that can tell me if this really is low for this motor?

[raul10141964]

your valves may by to tight

[spldart]

I have a set of feeler gauges. What is intake and exhaust lash supposed to be on this motor?

Supposed to be real rainy here in the Houston area tomorrow and I guess this would give me something
to do if I can't get in to work :)

(edit) can someone give me those rocker/valve clearances, roughly, for a cold motor?...
I don't wanna burn a valve..
I've found .06mm intake and .1mm exhaust on a google search but I'm hoping someone has a proper
service manual ;)

[blaine]

intake: 0.03-0.08 mm (0.001-0.003 in) and exhaust: 0.08-0.13 mm (0.003-0.005 in). :) ;)

[jonathan180iq]

There's also a handy How-To in the maintenance section.