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CB350F73,
Introducing shop air into the fuel rail is not a good idea for several reasons. Not the least of which is that shop air carries a huge load of moisture; the fuel system needs to stay dry.
Your check with air pressure is not logical. The fuel distributor is also the pressure regulator. With no airflow through the intake, the fuel distributor is closed. There will be no (or very little) fuel (shop air) flow. I tried to explain this in an earlier post.
If you don't know how the system works. How do you propose to make it work properly?
Please, visit the K-jet.org web site. Download the manuals listed under Documentation/Green Books/K-Jetronic and read all of them through from front to back. Then go back and read again what each component does. You will find slight differences between your K-jet on the 140 and the versions used on the 240 but it certainly close enough to figure it out.
It has been my experience that when a system was working before I touched it and then it worked no more, 99% of the time it is something I did. The other 1% there was a failure coincidental with my working on the machine.
--
Mr. Shannon DeWolfe -- (I've taken to using Mr. because my name tends to mislead folks on the WWW. I am a 51 year old fat man ;-) -- KD5QBL
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