1978 f150 vacuum confirmation
#1
1978 f150 vacuum confirmation
1978 f150 custom, 400 motor, 4x4, automatic.
I been having no luck finding the vacuum diagram I need. I have found so many diagrams and set my vacuum lines to one specific diagram that I found that comes closes to my configuration. I am in California and hoping that someone in California that has passed smog on one of these trucks can help me out here. Or if anyone can confirm my vacuum routing. Here is the ford figure i used and here is the photo of my trucks vacuum routing. Some of you have helped me out on this already and looking for more comments or suggestions.
Thanks
I been having no luck finding the vacuum diagram I need. I have found so many diagrams and set my vacuum lines to one specific diagram that I found that comes closes to my configuration. I am in California and hoping that someone in California that has passed smog on one of these trucks can help me out here. Or if anyone can confirm my vacuum routing. Here is the ford figure i used and here is the photo of my trucks vacuum routing. Some of you have helped me out on this already and looking for more comments or suggestions.
Thanks
#2
I am in the same boat i just got a 1978 bronco ranger with the 400m and rebuilt the stock carb and mine has a slightly different setup then your carburetor. its a tough one my chiltons manual has every year but the 1978 engine years so im trying to go off the ones online to get a start.
Im in orange ca so maybe we can collaborate because i only have 30 days to get it to pass smog.
Im in orange ca so maybe we can collaborate because i only have 30 days to get it to pass smog.
#4
#5
mines getting close im definatly going to put a catalytic converter before i try to smog it.
getting close i rebuilt my autolite with success and took off the 750 edelbrock the previous owner had on there so i got it tuned right just need to get some more of the egr equipment back on.
can you please take a few more pictures and draw where the lines are all going through the whole engine bay front to behind the carburetor.
here is a helpful link to the vacuum diagram to decipher what all the valves and senors look like.
78/79 Emission & Vacuum Diagram Picture Reference - FSB Forums
getting close i rebuilt my autolite with success and took off the 750 edelbrock the previous owner had on there so i got it tuned right just need to get some more of the egr equipment back on.
can you please take a few more pictures and draw where the lines are all going through the whole engine bay front to behind the carburetor.
here is a helpful link to the vacuum diagram to decipher what all the valves and senors look like.
78/79 Emission & Vacuum Diagram Picture Reference - FSB Forums
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So I wanted to update you guys just in case it may help others... I passed the smog emissions test here in california but failed the visual for no catalytic converter. My engine says "non catalyst" but the smog shop book says it should have one. They gave me a number to call where I can possibly get a sticker stating it does not require catalytic. But over all emission wise it passes so it looks like my vacuum routing is correct for those that are looking for vacuum routing as I was.
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