Egr
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Egr
I just rebuilt my 351W and I need to know where the EGR vacuum line goes. When I got the truck none of the vacuum line was hooked up so I have no idea where it goes. All of the smog equipment was also gone. It has no air pump or anything. Its just a strait 351 with a stock 4 barrel holley.
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It was a 351W HO out of an 85 F150. I rebuilt it due to it sitting in my friends yard for 8 years. However the vacuum lines were all gone when I got the truck therefore I have no idea where they go. I have the vacuum advance hooked up as well as the brake booster and the line for the transmission and the cruise control. The truck runs well except that the gas mileage is pretty bad and it seems to be running rich which is probably because I had to rebuild the carb ( a stock holley 4 barrel) and I dont think that the air fuel mixture is quite correct. Any help would be appreciated.
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From: north battleford
hi! new guy here.my egr was hooked up through a vacuum port on my egr spacer.there is a sensor on front of intake that is supposedly for egr control(black with ports).is it best to hook up through sensor .when i got the truck this sensor was plugged off.by the way what is the diff between reg and 351 h.o.
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I have all 85 vacuum diagrams at my disposal.
Is there a sticker with Engine ID on the valve cover somewhere ?
If you have the numbers I can post the exact one.
There were about 25 different routings for vacuum for the 351W.
There are 3 regular ones on this page near the bottom.
http://www.autozone.com/servlet/UiBr...3d800ce605.jsp
Meanwhile here is the 78's EGR diagram JUST to give you an idea where things go.
Is there a sticker with Engine ID on the valve cover somewhere ?
If you have the numbers I can post the exact one.
There were about 25 different routings for vacuum for the 351W.
There are 3 regular ones on this page near the bottom.
http://www.autozone.com/servlet/UiBr...3d800ce605.jsp
Meanwhile here is the 78's EGR diagram JUST to give you an idea where things go.
Last edited by Mil1ion; Oct 30, 2006 at 03:42 PM.
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2v or 4v carb ?
I have 8 different diagrams for an 85 F series truck with 5.8L
If you find it I need to know the 3 letters at the very bottom left hand corner of the sticker ?
I have 8 different diagrams for an 85 F series truck with 5.8L
If you find it I need to know the 3 letters at the very bottom left hand corner of the sticker ?
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From: Niceville, FL.
If you don't have the solenoids and other EGR control components that originally came on the truck/engine, you'd likely be better off just leaving the EGR valve vacuum port disconnected and plugging the unused vacuum ports on the carburetor and manifold unless your truck is required to have emissions checks. Without the EGR valve operating you may need to slightly reduce the size of the carburetor main jets to reduce mixture richness at highway speeds.
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From: Virginia
If you have an aftermarket carb, you can block the ports off if you don't have underhood inspections like Piffery1 said.
If you have the stock carb, you may need to run the egr to keep the engine from pinging.
If you have the stock carb, you may need to run the egr to keep the engine from pinging.
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