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Damage carb part |
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wakespirit 
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Joined: July-21-2012 Location: fr Status: Offline Points: 95 |
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 Topic: Damage carb partPosted: April-06-2017 at 4:24pm |
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Dear all,
I have this rubber part on my carb which seems to be damage. I guess it is the fuel pump correct ? What could happen with this damage part, too much fuel in the carb ? Thanks for your help regards |
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Posted: April-06-2017 at 5:17pm |
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Serge,
Try posting the picture of the part again. It didn't come through above. |
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wakespirit
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Posted: April-07-2017 at 5:28am |
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here is the picture
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KENO
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Posted: April-07-2017 at 8:43am |
That's the diaphragm for your secondaries. If it's ripped the secondaries will stay shut. Don't take this the wrong way, but if you think that's the fuel pump, you really should find a 351 manual in the reference section here on CCF and spend some time reading it, then you'll know a lot more about your engine  Doing the same thing with a Holley book would be a good thing too. You can find them on line also |
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fgroce
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Joined: July-05-2016 Location: Georgia Status: Offline Points: 350 |
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Posted: April-07-2017 at 9:20am |
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Serge if your float levels are correct, check the power valve that screws into the bottom of the carburetor . A backfire can cause it fail, and it only takes one good pop to take it out. The recommendation to find a Holley carburetor manual on line and study it. They are pretty good not like some other manuals. Hope this helps enjoy the boat.
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FGroce
88 Ski Nautique For 28 years Now 2002 Ski Nautique |
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wakespirit
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Posted: April-07-2017 at 10:54am |
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Could not find online manual for holley carb in order to identify where is the power valve that screws into the bottom of the carburetor.
What is that valve for and look like ? What to do with it to adjust ? I am not a mecanical guy but when I get explaination how to do and how I know how to follow. Thanks for help regards serge |
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wakespirit
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Posted: April-07-2017 at 10:58am |
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Here is manual I could find out :
http://documents.holley.com/199r7948-5rev6.pdf Can you see the valve you are talking to ? regards serge |
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KENO
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Posted: April-07-2017 at 12:00pm |
Here's a picture of a Holley metering block with the power valve in front of it. It's something that you would replace with another one.if it's leaking  The quick explanation would be that It's normally closed and as vacuum gets worse it opens to supply extra gas thru the primary side of the carburetor |
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wakespirit
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Posted: April-10-2017 at 1:23pm |
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Does any one knows any supplier with good price who can ship to France, where I can buy the diaphragme of my carb ?
thanks |
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KENO
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Posted: April-10-2017 at 3:13pm |
I know absolutely nothing about international shipping, but if you go on EBAY and search for "Holley Vacuum Secondary Diaphragm" the prices are reasonable and there are some international shippers. |
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wakespirit
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Posted: April-10-2017 at 3:32pm |
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Thanks
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wakespirit wrote: