4.2 v8.... Carb issues
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4.2 v8.... Carb issues
So my grandfather's uncle bought the truck new in 1981, it's passed through a few hands in the family. Main issue have been having is it flooding and then not starting for an hour or so. Anybody in here have the 4.2 v8 and is there a go to carb to get if you want to replace one.
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Welcome to FTE!
The stinking no good 255.
This thing probably has a Variable Venturi carb on it, another difficult child of the wasteland between the performance era and the era of refined electronic controls.
A Ford or Holley 2bbl will bolt right on there. You will have to fiddle with it for choke, jetting, powervalve, float level, but you'll quickly be able to get it running, and with a little effort, running right.
Some of the misery explained:
https://www.ford-trucks.com/forums/1...ock-units.html
https://www.ford-trucks.com/forums/3...turi-carb.html
https://www.ford-trucks.com/forums/4...placement.html
https://www.ford-trucks.com/forums/3...-replaced.html
Having said all that, if that 255 has other issues, use it as the boat anchor it is, and get a late Explorer or Mustang roller 302, put a small CFM carb on it and plop it in there. Double the power and probably better mileage.
Swerving suggestion.
The stinking no good 255.
This thing probably has a Variable Venturi carb on it, another difficult child of the wasteland between the performance era and the era of refined electronic controls.
A Ford or Holley 2bbl will bolt right on there. You will have to fiddle with it for choke, jetting, powervalve, float level, but you'll quickly be able to get it running, and with a little effort, running right.
Some of the misery explained:
https://www.ford-trucks.com/forums/1...ock-units.html
https://www.ford-trucks.com/forums/3...turi-carb.html
https://www.ford-trucks.com/forums/4...placement.html
https://www.ford-trucks.com/forums/3...-replaced.html
Having said all that, if that 255 has other issues, use it as the boat anchor it is, and get a late Explorer or Mustang roller 302, put a small CFM carb on it and plop it in there. Double the power and probably better mileage.
Swerving suggestion.
Laughing Gas
Joined: Nov 2013
Posts: 1,022
Likes: 79
From: A dirty little town in OR
When l was at the boneyard the other day l spotted at least 3 Bronco lls w V8 (assuming 302s). I was looking for l6 items so l didn't investigate and Explorers weren't even on my radar that day, but a small, roller-cammed V8 (provided l could mate it to my 4sp) would make my 85 F150 a lot more, uh... engaging... to drive.
Apologies for the thread drift/jack.
FTE Legend
Joined: Nov 2015
Posts: 30,890
Likes: 4,119
From: Angier, NC
What era had the roller 302? Late 80s? 90s?
When l was at the boneyard the other day l spotted at least 3 Bronco lls w V8 (assuming 302s). I was looking for l6 items so l didn't investigate and Explorers weren't even on my radar that day, but a small, roller-cammed V8 (provided l could mate it to my 4sp) would make my 85 F150 a lot more, uh... engaging... to drive.
Apologies for the thread drift/jack.
When l was at the boneyard the other day l spotted at least 3 Bronco lls w V8 (assuming 302s). I was looking for l6 items so l didn't investigate and Explorers weren't even on my radar that day, but a small, roller-cammed V8 (provided l could mate it to my 4sp) would make my 85 F150 a lot more, uh... engaging... to drive.
Apologies for the thread drift/jack.
V6 yes but not 8's
Dave ----
Laughing Gas
Joined: Nov 2013
Posts: 1,022
Likes: 79
From: A dirty little town in OR
I didn't look close... l know nothing of, and won't be bothering to learn more, about Bronco lls. I was just surprised to see a 60° V-anything and jumped to the wrong conclusion. I was in a little bit of a hurry... l was supposed to be making a quick run to the grocery store...
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