Simjet 1700 glow plug
 

I have a 1700 that was running fine a few weeks ago, but following a re-install after some work on the airframe, it wont now start. After the stick is moved up and back to initiate the start, nothing happens, and the display unit shows "glow plug disconnected" The plug is connected, and it is ok. I have removed the wiring loom to the fadec and checked for continuity and all appears to be ok. Glow plug power is set at 032.
Any help would be appreciated.

John

RE: Simjet 1700 glow plug
 

Hi John

Did you check with another glowplug ore did you check the first one with another power source. Sometimes they can be burned, so you can’t see it. Other that that, try to check all the wires again. If it is not that, must be a faulty ECU. Maybe you should try to contact Gaspar.

Best

Kim

RE: Simjet 1700 glow plug
 

Hi Kim
Thankyou for your reply, but I have now solved the problem. I spoke to a friend today who has several Simjets, and he has had a similar problem which was caused by the earth not getting through to the casing, and was solved by loosening the screws around the front of the case and retightening.His earth is inside the frontcover.My earth is through the Jetstrap, and I found there was no earth reading on the case. Strange considering the amount of contact area,and that it worked before,but after rotating the case in the strapa few times we now have an earth. To ensure it does not happen again, I am now going to connect direct to the case. Another lesson learnt.

RE: Simjet 1700 glow plug
 

For some reason, I expected that you where using a Gaspar ECU. But if you are using the SimJet ECU, this problem can be a bad earth in the engine and sometimes it is the threaded ring that you screw the glowplug in to, that has come loose from the combustion chamber.

Hope you get it going

Best

Kim