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EGR Valve replacement and cleaning.

13K views 14 replies 6 participants last post by  miesk5 
#1 ·
Hey im looking to replace my EGR valve so i can pass emissions in AZ, but I'm not sure if my truck has it installed -_-. I took some pictures but i'm not sure if I have it, the first pic i think its the egr control valve but Im not sure. Does anyone know exactly where the egr mounts in the 351m?


What I think the EGR is?


My carb
 
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#2 ·
The item circled in your first gigantic picture is the vacuum advance diaphragm.
 
#3 ·
yo M,
What year?
351M/400M Workshop; EXCELLENT M Block Information Source
Source: by Bubba (Dave R) at http://grantorinosport.org/BubbaF250/index.html
Ford Part Numbers for 351M/400M; "...The following table lists EGR valve and EGR ... read more @ http://grantorinosport.org/BubbaF250/parts/parts05.html
D8DZ-9D475-CA

avail from parts stores and http://www.amazon.com/ACDelco-214-1...circulation/dp/compatibility-chart/B000EQQXLU
Description & Depictions in Chilton Manual for 66-81 Bronco, Scanned Copy
Source: by Chilton via broncocity @ http://www.broncocity.com/diagrams/CHILTON MANUAL/Chapter 4 Emmisions Fuel.pdf page 145

Location & Depiction in Parts Diagram in a 78 400M

Source: by 78brncoxlt
 
#4 ·
One thing you can do to help pass your smog test is to put in a new set of plugs, back your timing down a couple of degrees then drive it around for an hour then right before you go in to test stop somewhere discrete and add 1/2 gallon = 2 x 32 oz. bottles costs $5-6.00 anywhere) of 91 % Isopropyl Rubbing Alcohol to 1/4 tank of gas and you'll pass with flying colorsmassuming everything is in working order.

This information is from FSB member Sixlitre's post "I done falied my somg test (tears)" I've been using it for years and passed twice in the last four years.


Good Luck ~ :thumbup
 
#15 ·
yo; See my reply with Diagrams showing it Behind carb, meaning it is between carb and firewall; also see Ford Part Numbers and Bubba's M BLOCK SITE

And as Mikey shows in diagrams he posted
 
#13 ·
#14 ·
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