holley 6919 tuning
Thread Starter
|
New User
Joined: Nov 2006
Posts: 11
Likes: 0
holley 6919 tuning
I have a holley list 6919 on my 85 460, this carb has the reverse idle system. I have the idle mixture screws all the way in, which is were I have the highest vacuum reading and the engine still idles slightly rough. It seems to me that I am running lean. What jet size do I have now? and how many sizes should I go up?
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
Well, It came with 622 jets. Which are emmisions exact sized 62 jets.
I would try 65 jets. But I don't know if this will help the idle. How does it run other than a rough idle? I am guessing you have checked everywhere for a vacuum leak. What intake manifold do you have?
Here is the Holley link for carb info http://www.holley.com/data/TechServi...%20Listing.pdf
I would try 65 jets. But I don't know if this will help the idle. How does it run other than a rough idle? I am guessing you have checked everywhere for a vacuum leak. What intake manifold do you have?
Here is the Holley link for carb info http://www.holley.com/data/TechServi...%20Listing.pdf
Thread Starter
|
New User
Joined: Nov 2006
Posts: 11
Likes: 0
I just switched to a Edlebrock performer manifold after having problems with vacuum leaks with the factory manifold,the roughness it smoooths out as the rpm's increase and if I stomp on it, well it will pin you back.
on my vacuum gauge I have a high and fairly steady reading
on my vacuum gauge I have a high and fairly steady reading
Last edited by exploderjoe; Mar 14, 2007 at 11:00 PM.
Post Fiend
Joined: Oct 2003
Posts: 9,176
Likes: 4
From: Western Central NV
You are aware that the reverse idle carbs adjust the opposite of a regular Holley. The adjustment screws adjust bleed air rather than fuel. When you turn the screws in you richen mixture.
I assume you already knew this. I just thought I would mention it in case you didn't.
I assume you already knew this. I just thought I would mention it in case you didn't.
Trending Topics
Thread Starter
|
New User
Joined: Nov 2006
Posts: 11
Likes: 0
I stepped up to 66 jets by swapping a diffrent carb on to the engine I am going to be checking the plugs today to see if there was color change, but I still have a slightly rough idle
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
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
Thread
Thread Starter
Forum
Replies
Last Post
Dot Heton
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
9
Apr 15, 2016 11:27 PM
HarlanThomas
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
15
Apr 9, 2010 02:10 PM
GQROD
Fuel Injection, Carburetion & Fuel System
7
Jan 1, 2010 03:36 PM
fdude64
Fuel Injection, Carburetion & Fuel System
33
Apr 24, 2008 07:33 AM
6919, adjustment, carb, carbs, carburetor, holley, holley6919, holly, idle, list, reverse, rough, screw, size, tuning
