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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

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  #16  
Old 12-16-2012, 04:32 PM
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Don't kid yourself. Do you think if Ford could have designed the system with a wider plug gap, and gotten 2 or 3 more mpg they wouldn't have just done it? They were strapped by emissions rules, but that's about it. There was no conspiracy to make all their trucks use more fuel.
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  #17  
Old 12-16-2012, 04:46 PM
1983F1503004x4 1983F1503004x4 is offline
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Originally Posted by Old81F100Brown View Post
So far I haven't seen an answer that I can work with. I need more than guesses. I will keep searching for a better answer. Like I found cowl Induction hoods might give me 7 more MPG. There has to be an answer. Or a combination of answers. Money is a problem. Some of the answers are too expensive. But I am learning more and more. I have found that the more I search the more I get closer to an answer. I just have to keep on trucking tell I find what I can work with. Thanks for your help.
A cowl induction hood is not a magical device for more gas mileage, despite what whoever it is might be claiming. These trucks are bricks, and the best MPG you'll get out of your 302 will be around 18 mpg in peak condition and tune with the proper components.

You'll have to provide us with better information in order for us to help you. If not, we can't do anything.

What kind of transmission do you have?
Is it 4 wheel drive? Are your hubs locked and the transfer case engaged?
What gearing does your truck have?
How fast do you drive?
Has the carburetor been rebuilt?
Have you tuned the carburetor's mixture with a vacuum gauge?
Check for vacuum leaks?

These are just the basic things, and in order to help more, we'll need information.
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  #18  
Old 12-16-2012, 05:37 PM
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Spark plug gap of .041?

Follow the gap recomendation on the emissions decal. Usually between .042-.046 with an average of .044 .
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  #19  
Old 12-16-2012, 11:06 PM
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This is a good read:

Looking For A Miracle: We Test Automotive 'Fuel Savers' - Popular Mechanics
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  #20  
Old 12-17-2012, 12:34 AM
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Originally Posted by Old81F100Brown View Post
I find that If I keep looking something will show up.
Yup, I'm absolutely convinced that if you look long and hard enough, you'll certainly find someone to provide you with an answer that fits your preconceived notion of what that answer needs to be to satisfy you.

Now, whether that answer lives in reality is indeed another story.

just sayin...
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  #21  
Old 12-17-2012, 12:10 PM
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Other peoples or "professional" tune ups

I have actually stood and watched professionals do nothing but change the oil (Midus Muffler) bet they would not let me into the shop area. It took me almost 6 months of checking vacuum hoses and tracing to find what had happened. It started to run ok again but at the price of horrible gas mileage, no HP and all my time pulling my hear out. This is a 1981 5L engine with a 4 on the floor (3+Overdrive) and let me tell you, NO ONE knows what they are doing on your truck. Don't loan it out (it isn't appreciated) and document what you do to fix things. I loaned mine out and the guy said "I guess I didn't get the back latch done right and the tailgate fell off at an intersection". I bought this truck almost new and had the engine rebuilt by journeymen mechanics. It's as if they develop a personality and will not work for anyone but you. If you want it done wrong, pay $125 an hour to a professional shop. Or just start drawing diagrams, taking notes, read your manual, AND NEVER LOAN IT OUT!!


Quote:
Originally Posted by RyanLeeSparks View Post
I just wanted to say thanks for posting on the firing order of a 302 ci. I lent my truck to some family so they had a four wheel drive for the winter and for hauling wood, when I returned it ran like garbage. They told me they had done a "tune up" on it and it still ran horrible. I have spent the last few days trying to figure out what was wrong and even did another "tune up" of my own i.e, Cap, rotor, plugs, wires, air filter, Oil, Oil Filter. Still to my dismay it ran horrible. Apparently 16 year olds should not replace a cap and rotor without a guide because the young man had the firing oreder all messed up and when I replaced the cap and rotor myself I "assumed" (dumb of me) that it was correct. After reviewing your post and checking it was completely wrong I'm not sure how it even started or ran but it did...now IT IS AWESOME!!!! THANK YOU!
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  #22  
Old 12-17-2012, 12:25 PM
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A proper "tune up" for your motor would be to first get the regular maintenance items out of the way, then check technical stuff.

Drain and flush coolant, new 50/50 antifreeze.
Run the motor up to operating temperature (take it for a drive and come back, this way you know the oil is hot), shut it off, then drain the oil. Replace with factory viscosity or slightly higher and a Motorcraft oil filter (avoid the orange can of death).
New spark plugs, spark plug wires, cap, and rotor button.
Rebuild the carburetor (probably needed after 31 years), new jets, floats, accelerator pump diaphragm, etc.
Tune the fuel mixture with a vacuum gauge, check for any vacuum leaks, and make sure everything is tight.
Re-check the timing on your motor and set it to either factory specs or slightly advance by about 2*.

That should have your motor running beautifully. If not, then there's problems elsewhere or you missed something.
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  #23  
Old 12-20-2012, 12:37 AM
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Quote:
Originally Posted by Anafiel View Post
Yup, I'm absolutely convinced that if you look long and hard enough, you'll certainly find someone to provide you with an answer that fits your preconceived notion of what that answer needs to be to satisfy you.

Now, whether that answer lives in reality is indeed another story.

just sayin...

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  #24  
Old 03-30-2013, 12:01 AM
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Sounds like you, OldF100Brown are not really looking for an answer. Not one perosn can tell you what is wrong with your truck without you giving them all the info and specs regarding your truck. They can help by answering any questions or giving advice but you have to be willing to help them out to help you out. Ask informative questions dont just assume every body knows everything before you tell them anything because they wont know what you have or what you've done or havent done. so give them more info and you may just be able to finally get your answer
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  #25  
Old 01-05-2014, 05:04 PM
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  #26  
Old 01-06-2014, 09:35 PM
Old81F100Brown Old81F100Brown is offline
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Quote:
Originally Posted by Kyle Charters View Post
Sounds like you, OldF100Brown are not really looking for an answer. Not one perosn can tell you what is wrong with your truck without you giving them all the info and specs regarding your truck. They can help by answering any questions or giving advice but you have to be willing to help them out to help you out. Ask informative questions dont just assume every body knows everything before you tell them anything because they wont know what you have or what you've done or havent done. so give them more info and you may just be able to finally get your answer
I have read my post over and over, and I don't get that I am asking a question. I am just stating don't loan your truck out to people and posting what has happened when I did. I don't have a problem that I need help with....what did I say that made you think I was asking for help on a question?
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  #27  
Old 01-06-2014, 09:39 PM
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Quote:
Originally Posted by Old81F100Brown View Post
I have read my post over and over, and I don't get that I am asking a question. I am just stating don't loan your truck out to people and posting what has happened when I did. I don't have a problem that I need help with....what did I say that made you think I was asking for help on a question?
Oh I see, going back to the original post. Pardon me, but I was and still am and will always be, looking for a way to make my rig more fuel efficient. I have found a couple of things that may work. But I will not post them until I have made sure that they do work or don't work, and then I can post more responsibly.
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  #28  
Old 01-07-2014, 07:24 AM
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Didn't mean to dig up old bones. I realized how old the thread was after I posted.

I was in a hurry and needed this exact info the op posted. Amazes me how fast things can be found.
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  #29  
Old 01-08-2014, 07:55 AM
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Ya might have to give the husband of the original post (firing order wrong) a break! The truck I just picked up was not running and needed and exhaust manifold, (thanks for the help here on that one) well put new manifold on and have to put wires back on. looked at the ORIGINAL emissions sticker on core support, (engine and core support are original)
The emissions sticker claims it's a 351!
Its a 302 (heads are close to the block) Ignoring the sticker and did the 302 wiring, fired right up!
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  #30  
Old 01-08-2014, 09:07 AM
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Quote:
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Its a 302 (heads are close to the block)
As I think about it, all the engines I've worked on have had the heads close to the block. Actually, .049" away from the block in many cases. Wow! A 302 with W-shaped valve covers? And a 302 with the valve cover held on by stove bolts? And a V6 as well as a 4 cylinder 302? And even an air-cooled 302!
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Old 01-08-2014, 09:07 AM
 
 
 
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