Mailing List flyrotary@lancaironline.net Message #11542
From: Bob White <bob@bob-white.com>
Subject: Re: [FlyRotary] Re: Engine start
Date: Sat, 18 Sep 2004 16:39:50 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
John,

Is there any chance at all the the coils are cross wired? i.e one of the
front and rear rotor coils reversed for example, or the plug wires
going to the wrong plug. I'm not sure that would make the symptomps you
are seeing, but it couldn't help.

Bob White

On Sat, 18 Sep 2004 17:54:55 -0400
"John Slade" <sladerj@bellsouth.net> wrote:

MessageOK, Guys. Here's another chance for your valued remote
diagnosis input.

After 2 months hiatus my engine now starts reliably and runs
consistently....just very very badly. In all the time I've had the
engine running, with various problems of mixture and tuning it has
NEVER run this rough. It shakes, and max rpm is about 2100. Each plug
seems to have a good spark but today I installed new plugs anyway and
checked the voltage on all coils and injectors. It runs exactly the
same as it did yesterday. The plugs are black and the engine blows a
bit of blue smoke.

It IS running rich, so I tried changing the overall range with mode 3.
As I lowered the mixture with 7 or 8 pushes the rpm came up a bit,
then started to slow down again. At the best rpm the EC2 is showing
slightly higher than center on the mixture. I tried switching off
either set of coils and felt a degradation with either off. Disabling
secondary injectors killed the engine. Primaries didn't make much
difference. I checked compression. 105# on each rotor.

My next thought is to check that cold start is operating properly, but
I'm pretty sure it is because the engine slowed down when I tried
switching it on.

I spoke with Tracy and he suspects fuel, possibly a bad connection in
the injector wiring, so tomorrow I'll rewire the entire injector
circuit if necessary.

I'm so glad Rusty still doesn't have power. I'm not in any mood for
jokes :(

Thoughts anyone???

Frustrated in West Palm



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