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Old 12-19-2019, 09:01 PM   #17
RalphG
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Join Date: Sep 2014
Location: Sask. Canada
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Default Re: Hesitation when accelerating from stop - Holly 1901 carb

Quote:
Originally Posted by Merc Cruzer View Post
51 MERC-CT,

The temp was up today, to 48 degrees (almost put the top down), so I had a chance to take her out. Big difference, when leaving from a stop. The hesitation issue seems to have been resolved with the changing of the hole position on the accelerator pump arm.

Thanks again,
Roy Lange aka Merc Cruzer
I find the temperature of the engine makes a difference too. Its better when the engine is up to normal (or above) temperature. Mine has the heat riser valve in the right side exhaust manifold but I'm not sure if it actually moves much. That is supposed to help build up some heat under the carb I believe.
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