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Carbureted GT40 issues

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Ccamp4 View Drop Down
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    Posted: September-27-2020 at 8:01pm
Hey CCF people,

I just picked up a 96 SN 196. It has a carbed version of the GT40. I haven't owned a carbed boat before but I have had to adjust the carb to keep bringing up the idle. After a little bit of use, the idle will go lower than normal and I have to adjust again. This cant be normal??? Can somebody more educated on the matter help please? Maybe carb needs a rebuild?
Chris Campo
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8122pbrainard View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 8122pbrainard Quote  Post ReplyReply Direct Link To This Post Posted: September-27-2020 at 8:07pm
Chris,
What are you adjusting on the carb? The idle mix screws or the curb idle screw?


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77 Tique

64 X55 Dunphy

Keep it original, Pete
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Ccamp4 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ccamp4 Quote  Post ReplyReply Direct Link To This Post Posted: September-27-2020 at 8:16pm
Hmmm...I'm not sure. Its a small slotted screw on port side of the engine carb. Clockwise seems to bring idle down and counter brings it up. 
Chris Campo
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Post Options Post Options   Thanks (0) Thanks(0)   Quote gun-driver Quote  Post ReplyReply Direct Link To This Post Posted: September-27-2020 at 9:10pm
Google and YouTube can be helpful. This is assuming its a holley and it's not a GT-40 with a carb GT-40s have fuel injection.

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8122pbrainard View Drop Down
Grand Poobah
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 8122pbrainard Quote  Post ReplyReply Direct Link To This Post Posted: September-28-2020 at 6:10am
Chris,
How about posting a picture of your engine showing the carb? 


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77 Tique

64 X55 Dunphy

Keep it original, Pete
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