Fastest-14
Expert Class
Fastest -14
Posts: 354
|
posted August 25, 2009 10:32 AM
Start Up Idle
What is it that controls the bike's idle when you first start it and then a few seconds later it idles high for about 30-60 secs and then it comes back down?
  
|
wrongway
Pro
Posts: 1078
|
posted August 25, 2009 12:44 PM
the secondary butterfly shaft has a fast idle cam on the left side.... that is why you have flys out performance when the idle is high ... the secondaries are wide open
Roy
|
Fastest-14
Expert Class
Fastest -14
Posts: 354
|
posted August 25, 2009 05:00 PM
If you pull the secondaries out, will you still get the high idle and then back to normal idle at start up or will it not idle up anymore once you pull the secondaries out?
|
eklipse636
Needs a life
ZX-14
Posts: 6046
|
posted August 25, 2009 05:05 PM
I'm pretty sure it idle's up to warm the engine up faster. I could be wrong. Is there a problem with yours?
____________
Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32
|
Fastest-14
Expert Class
Fastest -14
Posts: 354
|
posted August 25, 2009 05:11 PM
I'm not getting that idle up and back down that I use to get. Trying to figure out why.
|
wrongway
Pro
Posts: 1078
|
posted August 25, 2009 06:47 PM
removing the secondary butterfly shaft or the stepper motor will do that .
Roy
|
johnbull
Expert Class
Posts: 314
|
posted August 26, 2009 12:40 AM
If you only unscrewed the flies from the shaft, the high idle at warm up should remain exactly the same.
____________
John Bul Racing. Malta.
|
MJ
Zone Head
Posts: 560
|
posted August 26, 2009 01:29 AM
pulling the flies on mine didn't affect the cold start high idle at all 
|
kingtramp
Expert Class
Posts: 121
|
posted August 26, 2009 02:24 PM
initial start bike will run at about 1.6-1.7 k for about 30 to 60 seconds, AFR will be about 15.8 to 16.2, it appears a lean (hot combustion chamber) is establish for fast engine warm up time.
|
|
|
HOME
NEW TOPIC