90 hp Tillotson carb. adjustments

M

meadowbrook

Recruit
Joined
May 25, 2005
Messages
1
Hello I have a 1976 Chryser tri-hull with a 90 hp chrysler motor with 3 tillotson carbs. My engine runs fine idling but when I go to pull a skier, it bogs out in mid-range. I'm wondering what adjustments any of you would suggest making to my carbs. Is there one specific carb to adjust or all three? Does one carb handle any specific range? Are the carbs cylinder specific? Or could there be some other problem? Any help or ideas would be gladly welcomed. Elliott
 
eurolarva

eurolarva

Rear Admiral
Joined
Jun 24, 2003
Messages
4,182
Re: 90 hp Tillotson carb. adjustments

I believe the only adjustment on those carbs is for mixture adjustment. If you adjust them you are probably going to have idle problems. Check your fuel pump out and maybe replace the diaphram on that. Pretty simple and cheap fix. If that dont improve your performance you may have a needle valve sticking closed in one of your carbs or a fuel float that needs to be readjusted.
 
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