Re: '79 Ford pickup cranking away !!

Posted by Jon Hagen on February 21, 2006 at 11:39:11 from (69.26.16.211):

In Reply to: Re: '79 Ford pickup cranking away !! posted by JJ. in B.C. on February 21, 2006 at 10:28:51:

Yes,a new carb kit will have a new power valve and accelerator pump diaphram which are made of materials compatible with fuel that contains 10% ethanol,so fuel blend should not be a problem after the carb rebuild. You should lay the accelerator pump cover,gasket/diaphram side down on a flat machined piece of metal. Hold it up to the light and see if any light shows between the pump cover and flat piece if metal,which would indicate a warped cover. A warped cover should be replaced or filed/ground flat to prevent any fuel leakage. I have milled flat many Motorcraft or Holley pump covers by laying a sheet of emery cloth on a sheet of glass,and rubbing the pump over over the emery cloth untill the entire gasket surface is ground shiny and flat.
Be carefull to keep your manual choke on untill the engine warms up a bit. A lean backfire in a cold engine without enough choke applied is the cause of 90% of power valve failures. That backfire in the intake manifold will raise a pressure spike that can rupture the power valve diaphram.

Replies:

• Re: '79 Ford pickup cranking away !! JJ. in B.C. 14:32:42 02/21/06 (0)

Add a Reply Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]