08-24-2009, 12:09 PM #1
I dont think my low speed is set correctly
The slt runs great on the top end, plug chops ran great, but the low end im having some difficulty. I set the low a lil over 1/2 a turn out becuase the juges are .5 over. When I got to start the ski I gotta feed gas an it takes a few seconds to start. Also choke plates are removed so I cant even try an use them. Iv had to increase the idle speed on the water becuase when the idle speed out of the water was 1760 the ski would die when in the water which is not rite beucase in water idle should be 1250-1300... Should I open up the lows or close them a 1/8th of a turn?
08-24-2009, 01:35 PM #2
- Join Date
- Jul 2007
- Cedar Rapids,Iowa
You have a base line now at a half of turn, So open them up to 1 turn, does it run better or worst from a 2000 rpm take off? Then close to 1/4 turn,better or worst at a 2000 rpm take off? This should tell you which way you need to go. After you readjust the lows,double check your high setting again.
If you don't have choke plates,then you may have trouble when first starting and the engine is cold,Once warm,it shouldn't matter.
08-24-2009, 04:41 PM #3
- Join Date
- Oct 2006
- Cleveland OH
Why do you not have choke plates? Did you install the primers? Those would help greatly at start up.
Idle out of water is normally around 2600 RPM, roughly twice what it is in the water.
08-24-2009, 04:47 PM #4
first thing is to set the idle speed in the water,whatever it ends up being out of the water is just what it'll be.i wouldn't even worry about the bore size.the low speed adj is to dial in the idle mixture only.the jet along with the adjuster make up the idle mixture.what you're looking for is a smooth transition across the different posrt of fuel entry.lets say you need an air fuel ration of 7 to 1.you get the idle set at 7 yet when its on the low port you get 6 to 1.the next one added in gets you 5 to 1 mix,then once your the mains the mains are set running 7 to 1.you'll always have issues transitioning across that lean spot in the low to mid.you can mask it by setting the idle mixture rich at 8 to 1 and then the leanout isn't so bad but it';; try to load up at idle.start with the stock settings and idle speed set in the water
08-24-2009, 07:33 PM #5
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