Hello Kerry.

I was wondering if you could help me a little. I tried to do a test run on the older 2250 engine. The cockpit display shows the green LED blink slowly, the yellow
LED is on constant, so there was a throttle signal from the Tx. I tried to spool up the engine and i could hear and feel the pump is priming the fuel and the green
LED stays on solid as the manual explained. However, very soon after the green LED stay on solid, the red LED also comes on and blink slowly and there is no
ignition from the propane at all. I tried to recharge the battery, checked the glow plug, all is good. I also check to see if any power is present on the glow plug
power supply line, what i found was a constant 9.89 volts present at the plug connector even before and engine spool up or starting procedure. Is this normal?
I thought the power for the glow only switch on and the voltage only present after the priming of the fuel system. I also tried to check the glow plug's by removed it, attached to
power supply line , grounded it to the engine ground and spool up the engine to see if the plug would glow, but nothing. What may be the cause?

The second question is. There is a fuel leaks from the pump right at the seal. Can i buy a replacement pump from Flight Works to replace the leaking pump?

I thank you so much for all of your help.

Best regards.

yf222000

It is NOT normal to have this high a voltage a the Glow Plug circuit. The one way this can happen is that a frayed wire on the starter motor comes into contact with the starter housing to put this volatge onto the motor can. Generally when this happens, the plug is damaged and unusable. It is important to note that this DC volatge to the plug and starter are "pulsed DC" and I will have to investigate fruther and respond on my finidngs.

Be carefull on testing the Glow Plug as I have had plugs that tested ok but when put into the Turbine do not work as the coil is in fact broken but touched enough to test ok outside the engine !

I will suggest that you remove the Glow Plug wire from the Turbine Glow Plug. Use a remote glow plug driver to light the plug and try a start in that manner. If this works, the glow driver circuit in the ECU is in question.

Also, I'm assuming that you have pulled at least 1) Glow Plug Coil DOWN and fully outside of the plug body. You will not acheive igntion without this step.

If you have a FW-series 100 pump, there where recalls on them and you should check with Flight Works as they may replace it. SIMJET has moved away from FLightWorks pumps in late 2007 and have supplied Hausel since.

Please advise of your results / findings.

Hello Kerry.

I did another test with the system and surprisingly, it was the battery that caused it not to ignite to preheat the chamber.
Also, the fuel pump is a paper weight now. That means i have to buy a new pump. I guess the system is very sensitive
to battery's charge level. I thank you again for the expertise and top notch service you provided.

Best regards.