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Accelerator pump diaphragm |
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8122pbrainard 
Grand Poobah 
Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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 Topic: Accelerator pump diaphragmPosted: September-29-2015 at 12:11am |
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When winterizing my 302 today, I found a fuel leak. I pulled the carb and found the accelerator pump diaphragm in real bad shape. Has anyone gone to the alcohol diaphragm instead of the standard black rubber one?
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Gary S
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Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Posted: September-29-2015 at 12:50am |
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Not me I'm keeping mine original. Actually the last one I installed is a light green diaphragm maybe since you did yours Holley changed them?
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8122pbrainard
Grand Poobah
Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: September-29-2015 at 6:49am |
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Gary,
I've never rebuilt the carb and don't know if a PO ever has. The engine runs great but since I pulled the carb, I might as well do a rebuild on it over winter. Summit has two diaphragms available. The regular black one and a blue/green that's listed as "alcohol" hence the question. I'm assuming they mean it's good for ethanol. I'll know more about the condition of other internal rubber parts once I open it up. |
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Gary S
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Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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Posted: September-29-2015 at 11:51am |
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I wonder if the marine kits come with "alcohol" diaphragm because that's what came in my kit
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Bri892001
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Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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Posted: September-29-2015 at 10:10pm |
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I have the green one that skidim sells:
http://www.skidim.com/Holley-Parts/products/1055/ They say it's compatible with alcohol based fuels. I was just in there this past weekend. I had to swap out the fuel bowl, because one of the accelerator pump-diaghram-cover-screw-holes [that's a mouthful  ) in the bowl was stripped out.I wound up putting the green skidim acc pump diaphragm back. It was still in great shape after 3 summers. |
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