so i played some more with it.
did the magnet over the sensor. and i seem to be reading rpms.
No i am getting a failure to accelerate.

As it seems to get going on the propane, i wait for the pump to take over and ..shut down..

I disconnected the filter and shut off. same effect.
i then disconnected the fuel line from the turbine and told it to start.
it lights then the kero pump pumps slowly.. but that may be enough , i mean it is expecting the at fuel to accelerate...

could this be a fuel delivery problem?

i will check fuel lines in the turbine this week end. see how much i can see with out removing the compressor from the shaft.