I had my Motocraft carb on my 80 F 350 rebuilt a couple years ago. This was necessary to pass smog, another story. Ever since I got it back it has been very hard to start in the morning. I would need to pump the gas pedel a lot for it to fire. By pouring gas in the carb, it would start right up. The rest of the the day it would always start good. I know I should have taken it back, but I didn't. Anyone have a idea how I can figure out the problem. I would like to sell the truck, and might sell better if it would start in the AM. Stan
- Thread starter 37 chief
- Start date
sounds like the electric choke isnt adjusted rite...theres a round cup looking thing on passenger side of carb thats held on by 3 screws or rivets...if it still has rivets you will need to drill them out and replace with self tapping screws...loosen cup so it will turn...choke plate will start moving when you twist cup...hold throttle wide open and twist cup till choke plate just closes...tighten screws...crank engine up and make sure the choke cap is working...its powered off the alternator and should start getting warm to the touch...if it doesnt,check voltage at connector...if it shows voltage,then the element inside cap is bad and you replace whole cap.
oh yeah...engine needs to be overnite cold to adjust choke rite.
oh yeah...engine needs to be overnite cold to adjust choke rite.
in 25 years at fomoco dealerships i never ran across a vv on a 3/4 ton or larger...i think a few f150's got unleashed on to the unsuspecting public with them damn things...even with the proper tools they were impossible to get adjusted rite...the electronic 2 barrel that followed it was almost as bad...couldnt keep soft parts in em.
Sounds like the carb in my 1984 F150. When it sits long enough the fuel runs out of it, in my case it takes about a week, in yours it sounds like it running out overnight.
If thats the case first you have to grind the starter a while to pump fuel back into the carb, then you pump the gas peddle to use the accelerator pump diaphragm to to pump fuel into the intake. Just pumping the gas peddle without turning the starter does you no good because the accelerator diaphragm has no fuel in it.
Easiest way to see if that is the issue, when you first jump in the cab don't touch the gas peddle, just turn the key and let it grind for 10 seconds. Then pump the accelerator 10-12 times then bump the starter again. If it fires right up you know the issue.
If thats the case first you have to grind the starter a while to pump fuel back into the carb, then you pump the gas peddle to use the accelerator pump diaphragm to to pump fuel into the intake. Just pumping the gas peddle without turning the starter does you no good because the accelerator diaphragm has no fuel in it.
Easiest way to see if that is the issue, when you first jump in the cab don't touch the gas peddle, just turn the key and let it grind for 10 seconds. Then pump the accelerator 10-12 times then bump the starter again. If it fires right up you know the issue.
hoof print
Member
do you know what a carb is? Ford did not put VV carbs on a 1 ton.
Anonymous-0
Well-known Member
First thing to do is see if carb is dry . Air cleaner off, engine been sitting over night . Pump throttle while looking in front barrels . Do you see two streams of fuel shooting out ? If not carb is draining down . Only possible places are #1 bad power valve , very common #2 bad metering block gasket or bowlgasket , or accel pump diaphram leaking ,very common . Another may be fuel is boiling out, but this not very common unless summer time . If carb is full of gas, make sure choke plate is closed all the way , should have slight pressure closed .
I can say ,I miss the old VV's ,they made ,me ALOT of money back then as nobody wanted to mess with them .
I can say ,I miss the old VV's ,they made ,me ALOT of money back then as nobody wanted to mess with them .
If its a regular carb,which it should be,it is not real hard to rebuild and a rebuild kit shouldnt be very expensive.If its some odd carb with sliding things on top of it and electric solenoids on it the best thing to do is find one that will work off of an older truck with the same size engine and throw that electronic piece of hard to work on junk away.On a F350 it ought to be a regular carburetor and the main thing is to soak it in carb cleaner,blow out the passages with compressed air and rebuild it.It sounds like the previous rebuilder did something wrong.
MarkB_MI
Well-known Member
- Location
- Motown USA
Is the choke plate closing? If not, that's where I would start.
Similar threads
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.
Copyright © 1997-2024 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
Yesterday's Tractors - Antique Tractor Headquarters
Website Accessibility Policy