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10-14-2014, 11:38 AM
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#1 |
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Registered User
Join Date: May 2014
Location: Edmond, OK
Posts: 72
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Whine from the carb
There's a high-pitched whine coming from my Edelbrock carb, especially when the engine is idling. The noise dies down a bit when I accelerate. I attached a picture. The whine seems to be coming from the part with a small gap in it (choke assembly?) that is below the carb. The black part with the old triangle shaped gasket. What is this part called and what's it function? Should I probably replace? Any help is appreciated. This board and the venerable board members are so helpful as I'm replacing all the parts on my 67 c10.
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10-14-2014, 12:03 PM
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#2 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,731
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Re: Whine from the carb
Eddy carb needs an adaptor plate and gasket to fit on your stock intake.
Sounds like you have a vacuum leak. |
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10-14-2014, 12:07 PM
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#3 |
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Registered User
Join Date: May 2014
Location: Edmond, OK
Posts: 72
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Re: Whine from the carb
So you think the leak is between the carb and the stock intake? Should I just remove the carb and put a new plate and gasket in?
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10-14-2014, 12:22 PM
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#4 |
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Senior Member
 
Join Date: Feb 2012
Location: chillicothe, illinois
Posts: 690
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Re: Whine from the carb
You need a spread bore to square bore adapter. mr. gasket 1932 or edelbrock 2693
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10-14-2014, 03:04 PM
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#5 |
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Registered User
Join Date: May 2014
Location: Edmond, OK
Posts: 72
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Re: Whine from the carb
Will that adapter cover the bolt holes left when I remove the old part?
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10-14-2014, 03:27 PM
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#6 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,731
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Re: Whine from the carb
You should pull the carb off and see exactly what you have for gaskets before buying an adaptor.
Take some pics for us. You might only need a new gasket. |
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10-14-2014, 04:01 PM
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#7 |
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Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,229
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Re: Whine from the carb
It seems you have a later model manifold. First see if the gasket under the triangular plate is leaking. It is an EGR block off plate.
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10-14-2014, 04:04 PM
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#8 |
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Registered User
Join Date: May 2014
Location: Edmond, OK
Posts: 72
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Re: Whine from the carb
OK. Will pull off the carb and see what I"m dealing with. The engine is a mid-80s Chevy/Pontiac, I think. v8 350. I replaced the distributor and there was a 5 15 1986 etched into the coil, which makes me think the truck's motor was replaced around then. Thanks for the help. Will post pics with the carb off.
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10-14-2014, 06:01 PM
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#9 |
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Registered User
Join Date: May 2014
Location: Edmond, OK
Posts: 72
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Re: Whine from the carb
I'm not exactly a hot rod guy. I just like driving an old truck on the weekends. So would I be making a mistake to simply replace the EGR gasket and plate?
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10-14-2014, 06:17 PM
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#10 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,731
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Re: Whine from the carb
Go for it!
Might be the vacuum leak. Leave the carb alone for now. |
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10-14-2014, 06:48 PM
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#11 |
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Senior Member
Join Date: Mar 2012
Location: Chesapeake, Va
Posts: 1,275
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Re: Whine from the carb
hey Okie ,
show us some pics of your ride as well, greetings from Bigmac73 , I grew up in Moore,Ok
__________________
Mike 72 C-10 Cheyenne off frame resto and Upgraded to 4 wheel disk, Tilt, Dakota Digital Dash / Rear slider. 421 SBC / TH350 3000RPM Stall Progression Ignition /Holley 750 DP/3:73 gear Eaton Limited Slip unit / 2 1/2 exhaust glasspacks 
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10-14-2014, 09:38 PM
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#12 | |
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Registered User
Join Date: Jun 2014
Location: Glendale, Arizna
Posts: 1,642
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Re: Whine from the carb
Quote:
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10-14-2014, 09:40 PM
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#13 | |
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Registered User
Join Date: Jun 2014
Location: Glendale, Arizna
Posts: 1,642
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Re: Whine from the carb
Quote:
Last edited by mechanicalman; 10-14-2014 at 09:41 PM. Reason: stupidity |
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