FIRST START

[GOFT]

IO-390. Which Fuel servo?
RV 14 with a FM-150. Mixture-throttle interconnect bar/link on top of the servo. Shorten the link to lean the mixture.
In my experience of ONE :-)
Loosen the lock nuts and shorten the link by turning two flats clockwise (or away from you sitting in front of the aircraft. Run it up and check. If happy with the mixture, now correct the idle speed.
Again, experience of ONE. Took 1/2 turn clockwise to up the idle speed back to 750 RPM.

[Lizard Lips]

Originally Posted by Lizard Lips

Ran my IO-390 today for the first time! Started on the 3rd blade. However it was not without problems.

1. Ran very, very rich. Had to lean the mixture a lot just to get it to idle. Was able to richen the mixture as RPM's increased but had to lean it again once I began reducing the throttle. Does anyone have the procedure for adjusting the injector mixture?

2. Hartzel prop would not cycle. I think I ran the engine long enough to fill the prop cylinders with oil, but I'm not sure. When attempting to cycle the prop, nothing happens. RPM was about 1600 at the time. Any suggestions?

3. No manifold pressure indication. However I believe this is an instrument problem rather than an engine problem. Dynon Skyview HDX system.

Joe
Longview, Texas

RV-14A 95% complete, 95% to go
Arion Lightning LS-1 Flying regularly
2020 Dues Paid

Fixed the Manifold Pressure problem. As suspected, I had a bad connection right on the sensor. Another problem bites the dust. 10,380 to go!

Joe
Longview, Texas

[MED]

Originally Posted by KeithB

I have a Lyc 390 with Hartzell governor - it requires at least 1850 RPM for the prop to cycle. 1900-2000 works best.

+1 Both my prop and my buddy’s initially would not cycle in our RV-14As - at least not with the rpm drop seen in other airplanes. We both have Hartzell composite props. Even sent the governors back to Hartzell after discussions with both Lycoming and Hartzell. Turns out, there was no problem with the governors, and in the RV-14 configuration, they now recommend 2000 - 2100 for prop cycle, although it will cycle with less enthusiasm at something less.

[Mike Hepperlen]

If you are using an electrical primer solenoid purchased from Aircraft Spruce, you might have the primer lines hooked up to the wrong port. You might want to read the sales part of the add in their catalogwhere it describes how to hookup the unit.

Mike Hepperlen

[TS Flightlines]

UH---no reason to have a primer solenoid with an injected engine.

Tom