holey carb gurus
#11
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mine did the same thing after putting a big cam in, so my builder added some spacers that had adjustemnts to them, it helped a bunch, they look cool as well.
#12
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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.
Oh, and sometimes adding more base timing and taking a little out the the advance can help clean up the idle.
#15
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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.
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.
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#16
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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.
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.
#18
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Fixx
here's a good read for ya to give you a ides on how a carb works..
http://www.candsspecialties.com/tuning.html
http://www.candsspecialties.com/tuning.html
#19
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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.