Hi Al, I'm back from Sn'F but still in recovery mode. = Great=20 fly-in, lots of talking about engines & airplanes, found brakes for = my Kolb=20 Twinstar, wonderful flight to & from Lakeland. The Renesis = humming=20 under the cowl had me wishing it was farther away. =

From your description it sounds like the primary injectors = (your=20 secondaries are on the primary drivers as I = recall) are=20 not coming on line (no power?) Remember = that all=20 running on cold start is with all injectors running even below staging = manifold=20 pressure. The secondaries are probably the only ones running since = engine=20 dies immediately when cold start is switched off.

Could also be a staging relay problem, no power being = switched on=20 to secondaries (opposite problem of what I described above). = Have=20 you kept engine running long enough to get warmed up? Does engine = still=20 die then? Try turning mixture full rich when switching off cold=20 start.

Or, maybe the injector disable switch wiring has a problem = (if you=20 installed this feature).

BTW, do you have latest 20B EC2 updates? Lots of good = changes=20 in them.

Tracy (out of ideas for now)

Subject: [FlyRotary] Re: FI mystery

Since we are looking for = something=20 obscure here I would check the voltage to the fuel injectors. = Low=20 voltage would make for a lean mixture. Other items=20 are:

2. vacuum line=20 disconnected

3. air = leak

4. fuel=20 pressure

Haven=92t = checked the=20 voltage to the injectors yet; so I can do that.

Checked - = No vacuum=20 line leaks; no lines out of place. Leak in MAP line would give a = higher MAP=20 reading and too rich a mixture.

Checked - = No air=20 leaks =96 would take a major leak=20 downstream from the injectors to give these = symptoms.

Fuel = pressure is=20 normal.

Did you = try both=20 controllers?

Tried both=20 controllers =96 same behavior. Looked at the mixture correction = table on=20 the EM-2; things look normal. The mixture =93map=94 would have = to be WAY off=20 to require =91cold start=92 switch on.

The only = thing I=20 noted as abnormal was that the EGT on rotor one was not stable; seemed = to be=20 =91hunting=92 around the values of the other two. Since the = engine was=20 running smooth and steady, I attributed this to something related to = the TC,=20 like poor connection, TC going bad, etc. I can find no = connection=20 between this and a way to lean mixture w/o cold start switch=20 on.

Al (still = = baffled)