<VV> Fwd: Fuel Pump Eccentric

[Ken Pepke]

Not a common problem but also not unheard of.  Confirm the condition of the fuel pump eccentric by looking at the end of the push rod.  If the contact end is ground out in an arc [should be flat and smooth] and looking like a rough machine cut chances are good the eccentric is worn out.

Ken P
Wyandotte, MI
Worry looks around; Sorry looks back, Faith looks up.

> From: "Smitty" <vairologist at cox.net>
> Date: May 26, 2011 2:11:50 PM EDT
> To: <virtualvairs at corvair.org>
> Subject: <VV> Fuel Pump Eccentric
> 
>> From: Charles McKinley <cmckinley313 at verizon.net>
>> The fuel pump eccentric in my 63 Monza 900 80 hp 3-speed has worn down
>> to the extent that it no longer provides enough pump action to keep
>> the carbs adequately supplied. I have two questions:
> -------------------------
> Smitty Says;  I don't have a answer about removing the eccentric in the car. 
> I do have a word of caution for you though.  How do you know the eccentric 
> is worn out?  Did you measure it with a dial micrometer?  The stroke of the 
> pushrod is only ..037 inch with a new ecentric.  Most people expect it to 
> move farther than that.  I have seen a couple of cases where the damper was 
> night tightened all the way in, allowing the eccentric to wobble and not put 
> out a full stroke.
> 



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