05-29-2007, 10:18 PM #1
- Join Date
- Jul 2005
- Miami, fl
Anyone having starting issues with Rotax and Fuel controller
All of a sudden I am having problems starting up the ski. Once it start it does 80+ all day.
After I shut t down for a while, the I need to crank it many times before it starts.
Do you think now in the heat the controller is dumping too much fuel at start up?
I have Rotax with fuel controller and 50# injectors.
05-29-2007, 10:33 PM #2
i know brendon has the same setup and you have to give slight gas on startup so it will start....
05-29-2007, 10:40 PM #3
05-30-2007, 08:50 AM #4
he told me its because he has it tuned on the rich side and its dumping so much fuel on startup that you have the move the throttle a little to get the TPS in the correct spot....i am pretty sure..
05-30-2007, 10:05 AM #5
Hey guys. My ski had/has oversized pistons in it; plus a cam. I'm sure it has affected my ratios. You need to buy the cable and disc from Brian; plug it into the ski and adjust the fuel levels from 0-2000 rpm. Brian's spec settings run at a fuel level of 8.5-9.0. I had to adjust mine to 5.5 to keep it running with no addt'l throttle. That is about a 40% decrease in fuel ONLY for the low rpms.
If you're going to MB III, I will be happy to tweak your map on the spot!
05-30-2007, 10:08 AM #6
any new news on that thing b?
05-30-2007, 10:10 AM #7
Hecyan - I run an a/f meter all the time and don't recommend making any changes without monitoring your a/f level. With my controller set @ 9 on the lows, my a/f was under 10. I always try to be above 11 @ idle.
I think removing a little gas @ idle just to smooth things out wouldn't be too dangerous.
Last edited by BDNJ; 05-30-2007 at 10:13 AM.
05-30-2007, 10:11 AM #8
05-30-2007, 10:40 AM #9
nice, how is it? speeds? rpms?
the plan is start tonight, they showed up yesterday.
05-30-2007, 10:46 AM #10
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