ORIGINAL: lov2flyrc
ET,
Am I allowed to post here as an Ex JJ owner [sm=pirate.gif]
Justin is correct.... Using a magnet to "degauss" the RPM sensor on a Gaspar FADEC does nothing. It is not the same type of Hall Effect sensor used on the RAM engines.
He is also correct in that the combustion chamber on the JJ can be aligned correctly during assembly so the glow plug holes line up without moving when the plug is removed. So, yes.... If your chamber moves when the plug is removed, it was not correctly assembled. It does help knowing what your talking about before taking shots at others.... Just my limited knowledge worth
Todd
Let me fire that RIGHT back at you. It does help knowing what you are talking about before taking shots at others.
Mine, and at least several other people's engines, have the same "problem" with the plug hole not lining up. Since I did not assemble or dissasemble the engine...the factory did...there are one of two possible scenarios here...either the factory is assembling them wrong...or it is as they are designed.
Secondup...if you have a magnetic sensor, and you are getting funky RPM readings...you look at the SENSOR first. It's a magnetic sensor, with a magnet in the spinner, and I'm sorry, but magnets CAN lose their magnetism, and sensors CAN be tricked by electrically charged parts, and given a solid state piece of electronics like the Gaspar ECU, I would look at the sensor first.
Who mounted the sensor? The factory?
Always check the guage or sensor first.
Are the RF supression capacitors on the starter motor?
I am VERY surprised, in that I thought this engine was bought through "Jetjoe USA", who have vast experience servicing these, and that it would have been test run and debugged like the UK rep does.
What about