flyrotary@lancaironline.net Mailing List Archive

Don,

What is your procedure for starting? Do you use the Cold Start mode? What is the gap between the CAS sensor and the wheel? Mine engine wouldn't fire if the gap was greater than .030". But it sounds like the gap is fine as you stated that the plugs produce a blue spark. I assume that this is while cranking the engine. Sounds like it is stuck in cold start mode. Have you tried starting it with the Mixture knob set in the full lean position? I know that you said that you loaded the stock MCT settings in the EC-2, but have you looked at the MCT settings to verify that they look OK?

I don't consider myself an expert on the EC-2, but I now have about 45 hours of combined ground runs and actual flight time behind the rotary. With that said, here's how I start my 20B for the first flight of the day. I turn on the EC-2 A&B switches, close both battery contactors, power on both coils, enable both injectors, turn on the main fuel pump. Finally, I turn the mixture to full rich, and press the Program button once or twice. Finally, I open the throttle about 1/2" and hit the starter. It always starts after a second or two of cranking. As soon as it starts I begin leaning with the mixture knob.

Hot start is the same except I don't prime with the Program button, and I only crank the Mixture knob about 90* rich.

Mark S.

On Jan 12, 2008 6:47 PM, Don Wallker < drwalker@gbis.com> wrote:

The list has been a little quiet lately, so I hope this will liven it up a little. I'm at a loss as to how to get my engine running, so hopefully you guys will have the correct answer. Or at least move me in the right direction.

    My renesis RV-8 is complete and I tried starting it 2 weeks ago and all I could get it to do is flood. First a little background on the installation.

    New Renesis, 4 port automatic from Bruce Turrentine. He does nice work! All Tracy's stuff with all the new upgrades and I have installed a floscan fuel flow sensor with the wiring changes between the EM-2 and EC-2. Also have Bob's wiring harnesses to the EM-2 and EC-2 and the LS-1 coils. I have installed the primary/secondary injector disable switches and the coil disable. Bob's harnesses are the way to go! I have gone through and checked all the wiring with an ohm meter. Even pulled the crank angle sensor, unpotted it and brought it home where the repair dvd is and it reads the correct 1193 ohms and there is a change when I move metal near it. The crank pickup wheel can only be mounted one way so than can't be the problem.  I have set everything back to the original settings on the EM-2. I have run the new injector test (Mode 2) and they click like mad and I can turn them on and off with the Inj disable switches. I have pulled the irridium plugs and tested them (mode8) and they fire a bright blue. Tracy, love the test modes! I have tried all of the ways Tracy says to start it and all the ways everyone else on the list does it. Still floods. I am getting very tired of taking the plugs out, cleaning with carb cleaner and blowing them out and then cranking the engine to purge the fuel. My neighbors are very good to stand by with extingishers and telling me to stop when gas dribles out the exhaust.

    I have checked my fuel pressure with a seperate gauge, 34 psi one pump, 37 with 2. Using O2 sensor, but of course that does'nt kick in until auto-tune. I have the stock red Renesis injectors in the primary ports and the blue in the secondary. These injectors are used, but I had them cleaned and flow checked. Yes I know that the rear rotor, next to the pully is rotor 1 and of course the leading and trailing plug hole are marked as are the spark plugs. I have triple checked that the manifold lines are run and attached from the intake manifold to the EC-2 ports and the one on the EM-2 is left open, as per the manual. Tracy says that he has set up the EC-2 for the stock Renesis setup. Yes and I try both A and B controlers. No change.

    The only time I could get the engine to pop, was when it was still partly flooded and I hit mode 8 to fire the plugs. One pop. This is being done with a fully charged, new Oddyssy battery.   So, I am getting spark, fuel (lots) and air. No way to check the timing. After 2 weeks of this, I am at a loss and could use your suggestions.

Don Walker