MILD THUNDER

iTrader: (3)

I agree with everything Jeff1000 says. Lots of issues seem to come from guys cranking the idle speed screw up to get the engine to idle higher. Ends up with a crappy idle mixure, as the carb comes off the idle circuit. If adjusting the little mixture screws on each side of the bowl has almost no effect, the idle speed screw is prob set too high.

Oh, and sometimes adding more base timing and taking a little out the the advance can help clean up the idle.

rssteiny

Iam running 1" hvh super sucker spacers new this year but it always had 1 " open spacers

Thunderstruck

Rick,

Put a little more fuel in the idle circuits like 1/8 turn additional(out) on each screw until it stops stalling. Shouldn't affect the idle to the point it will hurt the drives.

jeff1000man

I still say after the carb is ajusted out that a really good valve adjustment makes all the difference in the world when you are trying to strengthen an idle. Re set them after you run the boat for a while and the lifters are pumped up.

Strengthen the idle screws until it stops stalling. The only issue you will have is that the carb will be loaded up strong when you come off plane, but a quick bump to the throttle will get them straight again.

Good luck and let us know what you find.

TWIN-SPINS

retighten the carb to manifold bolts,,,sounds like a vacuum leak

FIXX

iTrader: (2)

here's a good read for ya to give you a ides on how a carb works..

http://www.candsspecialties.com/tuning.html

blue thunder

Go to 3/4 turn out and retest (in 1/4 from where you are at 1 turn out). If still not satisfied go to 1/2 turn out. That should do it. If not, you will need to open the secondardy idle srcrew a bit so we can close the primary idle screw to get on the idle circuit.

rssteiny

Both were at 1 turn out im going to turn them all the way in then 1 1/2 turn out then go from there on water this weekend.

Thanks guys

FIXX

iTrader: (2)

if you go 1 1/2 turns out it will probably stumble and load up at idle..out makes it fatter and in liens out the mixture.

i always start at 1/2 then adjust the rear throttle blade for idle..never touch the front,,read the c&s post,it has good info.

if your getting reversion at 800 rpms then you may have to live with it or restrict the water coming our of the pipes and run some through hull fittings and dump the water their to..

rssteiny

Mine only have 1 idle set screw and 2 air bleed screws in front none in rear.