Carburetor issue
Thread Starter
|
Freshman User
Joined: Dec 2007
Posts: 45
Likes: 0
Carburetor issue
As I mentioned I'm quite the n00b here, so please excuse my ignorance. I will be happy to answer any and all computer related questions as payment. 
I've posted 2 threads about some engine trouble:
https://www.ford-trucks.com/forums/6...ont-start.html
https://www.ford-trucks.com/forums/6...ng-a-stop.html
Perhaps my carburetor is the issue? Here's a pic:
One thing that troubles me is the red tube going nowhere. Is that typical? Second, the throttle plate is always wide open like that. Is that correct? I had my wife start up the truck and press the gas and it always stays open. Shouldn't that be opening/closing? I can close it manually (and then the truck stalls), but it always wants to stay open like that. Is that right?
Thanks.
1985 F150 6-cylinder 4WD
I've posted 2 threads about some engine trouble:
https://www.ford-trucks.com/forums/6...ont-start.html
https://www.ford-trucks.com/forums/6...ng-a-stop.html
Perhaps my carburetor is the issue? Here's a pic:
One thing that troubles me is the red tube going nowhere. Is that typical? Second, the throttle plate is always wide open like that. Is that correct? I had my wife start up the truck and press the gas and it always stays open. Shouldn't that be opening/closing? I can close it manually (and then the truck stalls), but it always wants to stay open like that. Is that right?
Thanks.
1985 F150 6-cylinder 4WD
FTE Chapter Leader
Joined: May 2002
Posts: 42,585
Likes: 3,122
From: Fraziers Bottom, WV
Look at this thread, it describes where the hose goes.
Rod
https://www.ford-trucks.com/forums/5...uum-lines.html
Rod
https://www.ford-trucks.com/forums/5...uum-lines.html
Thread Starter
|
Freshman User
Joined: Dec 2007
Posts: 45
Likes: 0
Trending Topics
Senior User
Joined: Oct 2005
Posts: 146
Likes: 2
From: Wichita Falls TX
Well now wait a minute. doesen't that red hose go to the air cleaner thermostat that has another hose running to the manifold like on the cars? Or not? (Guess I better get me a truck, huh?).
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
FTE Chapter Leader
Joined: May 2002
Posts: 42,585
Likes: 3,122
From: Fraziers Bottom, WV
Originally Posted by 78ltd
Well now wait a minute. doesen't that red hose go to the air cleaner thermostat that has another hose running to the manifold like on the cars? Or not? (Guess I better get me a truck, huh?).
Moderator
Joined: Jan 2001
Posts: 56,966
Likes: 2,728
From: Virginia
Yes, if you look at the location of the red hose, it just goes to the air horn under the air cleaner. There is no vacuum in that area. It's just a clean air source for the choke system vacuum.
Thread Starter
|
Freshman User
Joined: Dec 2007
Posts: 45
Likes: 0
Ok, another dumb question. What type of carb is this? I just got the Chilton's for 65-86 Ford Pickups and I thought, reading previous threads, that this was a Carter YF 1-bbl carb. But looking at the pic (page 209 if you're following along at home) doesn't look like this at all. Checking the four carbs they diagram, it looks most like the YFA non-feedback, but even that doesn't look right. And that tube isn't shown on any of them. Is the Chilton lacking in this area? Am I maroon?
Thanks.
Thanks.
FTE Chapter Leader
Joined: May 2002
Posts: 42,585
Likes: 3,122
From: Fraziers Bottom, WV
It's a carter YF. There are few minor changes/variation over the years but they are all the same. I personaly note 1 change in your picture. On my truck the OEM carb and both rebuilds have the choke vacuum tube inlet on the other side.
1 bebuild had a larger fuel bowl and the other was the same as the OEM.
1 bebuild had a larger fuel bowl and the other was the same as the OEM.
Senior User
Joined: Sep 2006
Posts: 279
Likes: 0
From: LaFollette Tn
Something to remember.The Carter(R)"Y" series had MANY versions.When buying or swapping for another,be sure to check carefully that you are getting the version that you want.Also,you will find that the mounting holes have different spacing.Earlier are CLOSER together than the feedback junk.However,IIRC you CAN mix and match the carb lower end to get the correct spacing for the mount holes,and still get away from the feedback junk.
Leo