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Author Topic:   idle change with 4 hole spacer
rockafellz
Gearhead

Posts: 1348
From: San Lorenzo, CA, USA
Registered: Aug 2001

posted 04-26-2003 10:48 PM     Click Here to See the Profile for rockafellz   Click Here to Email rockafellz     Edit/Delete Message   Reply w/Quote
Hey All,

We added the 4 hole space today and the motor idled a lot higher (1500rpm) afterwards.

I adjusted the idle speed back down to 1000 but when in gear, it doesn't want to idle correctly and just dies. I had to bring the idle speed back up a little to prevent it from dying. We used 2 gaskets. 1 under the spacer and 1 over the spacer. The nuts were tightened well.

Is this normal or vacuum leak maybe? I'm not sure where the vacuum leak would be coming from though. I am sure the nuts are secure.

Erik

------------------
1966 Ford Mustang 2+2
Mine - Restomod in Progress

1966 Ford Mustang Coupe
Dad's - Original Unrestored

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rockafellz
Gearhead

Posts: 1348
From: San Lorenzo, CA, USA
Registered: Aug 2001

posted 04-26-2003 10:55 PM     Click Here to See the Profile for rockafellz   Click Here to Email rockafellz     Edit/Delete Message   Reply w/Quote
Oh and we're using a 1850-2 600cfm Holley, an original FoMoCo 4 hole spacer, and a Edelbrock torker II manifold.

Erik

------------------
1966 Ford Mustang 2+2
Mine - Restomod in Progress

1966 Ford Mustang Coupe
Dad's - Original Unrestored

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johnmustang
Gearhead

Posts: 5144
From: British Columbia , Canada
Registered: Nov 2001

posted 04-26-2003 11:02 PM     Click Here to See the Profile for johnmustang   Click Here to Email johnmustang     Edit/Delete Message   Reply w/Quote
It sounds like a vacuum leak, the gaskets can be a bit small for the 4 hole spacers causing the leak, at least it was on mine. Is the spacer new or used ? all vacuum lines hooked up ? Do you have the nipple on the spacer that the vacuum line goes to, and if so is it hooked up ? Also the vacuum line itself could have a split in it, another problem I had with mine ( new line ). Just a few thoughts, hope it helps you good luck.

JOHN

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65 2+2 FASTBACK
87 TAURUS WAGON
98 F150 XLT TRITON V8 4.6, 4 WHEEL DRIVE
Member:Vancouver Island Mustang Association
M&M #1710
MyPhotoPage
MY TRUCK

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johnmustang
Gearhead

Posts: 5144
From: British Columbia , Canada
Registered: Nov 2001

posted 04-26-2003 11:13 PM     Click Here to See the Profile for johnmustang   Click Here to Email johnmustang     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by rockafellz:
Oh and we're using a 1850-2 600cfm Holley, an original FoMoCo 4 hole spacer, and a Edelbrock torker II manifold.

Erik


I see now that you have an original spacer ( started to answer and the phone rang, been on it for awhile ), check the gasket, I had to make my own. Now I have no problems.


JOHN

------------------
65 2+2 FASTBACK
87 TAURUS WAGON
98 F150 XLT TRITON V8 4.6, 4 WHEEL DRIVE
Member:Vancouver Island Mustang Association
M&M #1710
MyPhotoPage
MY TRUCK

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Fastymz
Moderator

Posts: 14201
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 04-27-2003 08:08 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
Erik a vacuum leak would what I'd look for too.I did not notice any change in idle when I added mine.

Let us know what you find out.

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SCOOP
oddly obsessed with big scoops on little Mustangs

2.26 60'S
14.9 @ 90.86MPH

65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede.

https://mustangsandmore.com/ubb/Fastymz.html

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