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Author
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Topic: New Carb idle help......
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Dave Gibson
Moderator Posts: 8803
From: Norfolk, Virginia, USA M&M#166 MCA#47921
Registered: Aug 99
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posted 03-05-2005 10:12 AM
   
Just put a remanufactured 2V carb on our '66 coupe. Fired right up no problems.  But, the idle is through the roof. Revs way to high like it's almost at full throtle.  The fast idle screw isn't even touching the stop. I quit playing with it due to rain. Any thoughts or suggestions would be greatly appreciated. Dave & Terri ------------------
'65 Mustang Fastback
'66 Mustang Coupe
'02 Explorer XLT
Common sense isn't common anymore.
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whiteknight289
Gearhead Posts: 1159
From: Wheaton, IL, USA
Registered: Mar 2004
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posted 03-05-2005 12:38 PM
Sounds like you've got massive air infiltration. check to make sure the base gaskets match to your spacer plate and the underside of the carb. Also look at the large pcv hose connection.
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Moneymaker
Administrator Posts: 25360
From: Lyons, IL, USA
Registered: May 99
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posted 03-05-2005 12:58 PM
Check the choke linkage and adjustment Dave.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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Dave Gibson
Moderator Posts: 8803
From: Norfolk, Virginia, USA M&M#166 MCA#47921
Registered: Aug 99
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posted 03-05-2005 02:41 PM
I think I may know what the problem is now that I have had some time to think about it.  Great input fellows. If what I think is wrong doesn't correct the problem, I know where to continue looking. Thanks guys. Dave & Terri ------------------
'65 Mustang Fastback
'66 Mustang Coupe
'02 Explorer XLT
Common sense isn't common anymore.
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Fastymz
Moderator Posts: 18400
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-05-2005 02:43 PM
Dave,I know whats wrong your missing the other 2 barrels.   Did you put the return the spring back on. Don't ask why I know this.
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oddly obsessed with big scoops on little Mustangs 65 coupe 351w C4 Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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kcode
Gearhead Posts: 3009
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99
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posted 03-05-2005 11:27 PM
My turn to guess, the pivot ball for your linkage was in the wrong hole. One of the kids in our club put a Holley on his 71 Mach 351 with cable linkage, it wouldn't idle down. The cable was fully extended. I fixed it in about 10 minutes. Now he thinks I'm a God Mike
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Dave Gibson
Moderator Posts: 8803
From: Norfolk, Virginia, USA M&M#166 MCA#47921
Registered: Aug 99
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posted 03-06-2005 12:08 PM
Well, I found the vaccum line from the base of the carb to the distributor has pulled out of it's threaded end. Called NPD and placed an order.New Distributor to carb base vaccum line.
New carb mounting studs and nuts.
New gaskets. Had some difficulty placing the carb on the old studs. So I will start over by replacing the studs, gaskets, and the vaccum line for the distributor. We shall see what happens after that. Dave & Terri ------------------
'65 Mustang Fastback
'66 Mustang Coupe
'02 Explorer XLT
Common sense isn't common anymore.
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whiteknight289
Gearhead Posts: 1159
From: Wheaton, IL, USA
Registered: Mar 2004
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posted 03-06-2005 12:24 PM
Hey Dave,
You might have more than one problem then, the vac line to the distributor should not have full vac at idle, it should oome on as you accelerate.In addition to fixing that line, double check your fast-idle choke settings like alex said. Scott
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