----- Original Message -----

From: John

To: Rotary motors in aircraft

Sent: Monday, September 21, 2009 11:25 AM

Subject: [FlyRotary] Re: fuel condition

Bill, the tach is a UMA analog that Bob found for me and in fact is connected to the #1 rotor primary injector.  Bob will have to comment on this issue.  The fact that it will run on the #1 rotor with the injector plug off and the secondary should be inactive at 1800 rpm's (idle) leads me to believe the injector is sticking open when it gets hot.  Also it ran great for 7.2 hours is also a sign that something happened all at once.  It still starts and runs okay cold.  JohnD....electronically challenged

----- Original Message -----

From: Bill Schertz

To: Rotary motors in aircraft

Sent: Monday, September 21, 2009 8:11 AM

Subject: [FlyRotary] Re: fuel condition

John,

I believe that the tachometer signal for the EM2 is taken from the injector for #1 rotor primary injector. I had a problem that when the Blue Mountain tach signal was connected, it drew enough current to hold the injector open, therefore would not close.  What kind of tach are you using, and is it connected to bob whites harness? Could it be drawing current?

 

With engine off but injector power on, try unplugging the injector connection to see if the injector clicks closed.

Bill Schertz
KIS Cruiser #4045
N343BS
Phase I testing

----- Original Message -----

From: John

To: Rotary motors in aircraft

Sent: Saturday, September 19, 2009 6:53 PM

Subject: [FlyRotary] fuel condition

Gentlemen,

Tonight I capped the fuel line to the Weber, started the engine and run it dry.

Placed the stethoscope next to the #1 primary injector, mode switch in 0, pressed the store switch and nothing, I believe the injector is stuck in the open position

With the fuel pump off, mode switch in 1, cold start switch on, press store and injector start clicking

The above is from the trouble shooting section of the EC2 manual

 

Is it safe to assume that the injector is sticking or dirty.  enclosed are the pictures of the pumps and the LP regulator, all below engine block level; hose (red insulation)going up to the Weber, plugged; picture of fuel rail and primary injectors buried under intake manifold; stethoscope placed next to #1 primary injector.  JohnD

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W-10 fuel system 004
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