68 F600 idle problems
Thread Starter
|
5th Wheeling
Joined: Apr 2011
Posts: 41
Likes: 0
68 F600 idle problems
New to forum so please have patience.I have 68 F6oo 330 with motorcraft D2HF AA (2300G holley)that was recently rebuilt with modest kit.Before rebuild,truck had very rough idle and adj. screws had no effect on idle.After build,on road truck runs out well and while throttle is applied,but as soon as pedal is released,truck dies.Float level is correct and has new plugs,points,ect. Adj.screws will shut engine down when screwed all the way in,but do not seem to have much effect otherwise.Carb has 100.000 miles and throttle shaft has lot of play where it goes into carb body. Thanks for any help.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
First, WELCOME to FTE! 
If the carb shaft is loose in the body, there's almost nothing else you can do first before replacing the carb. Bushing it is possible, but I don't think it will be cost effective, it's cheaper to replace it with something from NAPA for instance.
When the shaft is that loose, any idle adjustments are pointless.
You MIGHT be able to find just the throtte plate/assembly somewhere, or find a used carb with a tight shaft and replace the bottom of the carb.
If the carb shaft is loose in the body, there's almost nothing else you can do first before replacing the carb. Bushing it is possible, but I don't think it will be cost effective, it's cheaper to replace it with something from NAPA for instance.
When the shaft is that loose, any idle adjustments are pointless.
You MIGHT be able to find just the throtte plate/assembly somewhere, or find a used carb with a tight shaft and replace the bottom of the carb.
Laughing Gas
Joined: Nov 2003
Posts: 898
Likes: 1
From: southeren Oh
First, WELCOME to FTE!
If the carb shaft is loose in the body, there's almost nothing else you can do first before replacing the carb. Bushing it is possible, but I don't think it will be cost effective, it's cheaper to replace it with something from NAPA for instance.
When the shaft is that loose, any idle adjustments are pointless.
........
If the carb shaft is loose in the body, there's almost nothing else you can do first before replacing the carb. Bushing it is possible, but I don't think it will be cost effective, it's cheaper to replace it with something from NAPA for instance.
When the shaft is that loose, any idle adjustments are pointless.
........
And If that is fine allmost all holes on a holley are easiley cleaned.
Of course there are a few in the metering block that you cannot get a line of sight on. (becasue of the oposing 90 degree turns)I have run into a few where the best fix was a new metering block.
Thread Starter
|
5th Wheeling
Joined: Apr 2011
Posts: 41
Likes: 0
F 600 idle problems
Thanks for the advice about carb.I'm going to get in touch with NAPA now to see what they may have.I have not had a lot of luck finding one of these carbs.I have wondered why I couldn't put an ungoverned Holley on in place of this one and adjust linkage not to overrev.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
You should have no problem throwing a 2bbl Holley on that engine.
Putting an FE in there presents some problems, none of which are impossible to deal with, but things like reusing the timing cover to keep the existing motor mounts, what motor you have (330MD vs 330XD) changes the crank snout size so the timing cover may or may not fit, etc.
Putting an FE in there presents some problems, none of which are impossible to deal with, but things like reusing the timing cover to keep the existing motor mounts, what motor you have (330MD vs 330XD) changes the crank snout size so the timing cover may or may not fit, etc.
Thread Starter
|
5th Wheeling
Joined: Apr 2011
Posts: 41
Likes: 0
F 600 idle
Thanks for help with carb problems on truck.Think I found one on ebay.Any info on places to find parts for this truck would be great.It looks like they may be getting hard to find.
Trending Topics
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
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
Thread
Thread Starter
Forum
Replies
Last Post
curtisbutlerjr
1987 - 1996 F150 & Larger F-Series Trucks
6
Aug 27, 2014 04:12 PM
mvenn250
1961 - 1966 F-100 & Larger F-Series Trucks
12
Jun 3, 2013 10:33 PM
grandpas68
1967 - 1972 F-100 & Larger F-Series Trucks
11
Oct 30, 2009 11:55 PM
