Gsuit
Well Known Member
I'm chasing two gremlins and hope the vast knowledge on this forum can help me catch 'em...
For information my setup particulars are:
- Superior XP-360 engine
- MT 3-blade propeller (MTV-12)
- LightSpeed Plasma III ignition (red box, not the Plus) with Direct Crank Sensor
No RPM
During my first engine start I had no RPM indication on the EIS. After speaking with GRT I performed the mod on the EIS as they prescribed where resistor R22 and capacitor 103 are snipped / removed. However, this did not fix my RPM problem. I continue to read 0 on the EIS display. To reiterate, the symptoms of my problem are:
- RPM reads 0 with or without the engine running
- I've changed the Tach P/R to 1, 2, and 3 with no change (engine and electrical system were completely powered down between Tach P/R changes)
No Oil Pressure
My EIS reads 0 for oil pressure, as it should, before engine start or any engine revolution whatsoever. As the engine rotates (either for actual start-up, or just to operate the prop/engine with no spark) the oil pressure begins to climb. Quickly it passes through 30, 50, 80... and if the engine is allowed to crank, will hit 99 and peg there. Upon engine shutdown, oil pressure will eventually subside back down through the numbers to 0.
So far, I have taken the following action:
- Verified oil actually pumping to the sender by removing the hose and rotating engine until oil pumped out of hose into can
- Verified the oil pressure sender is VDO and stamped "0-5 bar"
- Verified the sender has a good ground, good wire continuity, and good signal by powering the EIS and touching the orange/black oil pressure wire to the sender body (EIS reads 0). Also I have verified a good ground with a meter.
I have a call in to GRT and have emailed them, but expect they are down for Christmas. I'm itchin to get this fixed so I can move on... hoping for a January DAR visit Any help or troubleshooting advice you can give would be appreciated.
For information my setup particulars are:
- Superior XP-360 engine
- MT 3-blade propeller (MTV-12)
- LightSpeed Plasma III ignition (red box, not the Plus) with Direct Crank Sensor
No RPM
During my first engine start I had no RPM indication on the EIS. After speaking with GRT I performed the mod on the EIS as they prescribed where resistor R22 and capacitor 103 are snipped / removed. However, this did not fix my RPM problem. I continue to read 0 on the EIS display. To reiterate, the symptoms of my problem are:
- RPM reads 0 with or without the engine running
- I've changed the Tach P/R to 1, 2, and 3 with no change (engine and electrical system were completely powered down between Tach P/R changes)
No Oil Pressure
My EIS reads 0 for oil pressure, as it should, before engine start or any engine revolution whatsoever. As the engine rotates (either for actual start-up, or just to operate the prop/engine with no spark) the oil pressure begins to climb. Quickly it passes through 30, 50, 80... and if the engine is allowed to crank, will hit 99 and peg there. Upon engine shutdown, oil pressure will eventually subside back down through the numbers to 0.
So far, I have taken the following action:
- Verified oil actually pumping to the sender by removing the hose and rotating engine until oil pumped out of hose into can
- Verified the oil pressure sender is VDO and stamped "0-5 bar"
- Verified the sender has a good ground, good wire continuity, and good signal by powering the EIS and touching the orange/black oil pressure wire to the sender body (EIS reads 0). Also I have verified a good ground with a meter.
I have a call in to GRT and have emailed them, but expect they are down for Christmas. I'm itchin to get this fixed so I can move on... hoping for a January DAR visit Any help or troubleshooting advice you can give would be appreciated.