On 8/21/2010 6:01 PM, SF Man wrote:
On Sat, 21 Aug 2010 16:34:27 -0500, The Daring Dufas wrote:

You can always try the compressed air trick.

I didn't want to say this but I totally didn't get the compressed air
trick. How are you going to COMPRESS the air in the spark plug hole and
keep it there? The second you remove the air gun, the air will blow out the
open spark plug hole. And, even then, with no spark plug, what's gonna
ignite the mixture inside?

I just didn't understnad it at all? Sorry.

All reciprocating (piston) engines are basically air pumps.
The characteristics of a two cycle engine allow you to run
it on compressed air. You hook an air hose to the spark
plug hole, feed it with a steady supply of compressed air,
pull the starter cord and the engine will run on the compressed
air. The pressurized air is taking the place of the explosion
of fuel/air to push the piston down. A two cycle engine exhausts
every time the piston goes down which is why the compressed air
can be used to run it. When I check a two cycle motor with air,
I stick a rubber blow gun tip into the spark plug hole and hold
it there. I don't run it for hours, just a minute or so in order
to test the ignition for spark output and make sure there are
no problems with piston and rings. It's not rocket surgery. 8-)

TDD