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  • 1965 - 1973 Classic Mustangs -General/Talk-
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holley smooth no ping idle but try to maintain anything over 30

  • Thread starter Thread starter steven miller
  • Start date Start date Apr 13, 2013

steven miller

New Member
Aug 17, 2012
11
0
1
northern cali
Apr 13, 2013
#1
  • Apr 13, 2013
  • #1
302sbf d80eheads stock 4vsquarebore itake c4 at rv cam
holley 1460 66 main jets and 27 idle vacume secondary's stock
have idle set to 900 750 in gear no pinging 10btc idles smooth and acellerates good
wile trying to maintain a constat speed from any were from 30 -60+ it stumbles bucks and occasionally farts down the pipes it acellerates but wont maintain a constant speed
have set timing to 6btc like the book says and up to 16btc
15-18hg manifold vacume weather permit en
ive done the 1/2 hg pv from 4.5 to 7.5 my manifold never drops to any thing close to half
ive adjusted the transfer slot from.0 to .030 no change other than high idle
changed acelerater pump locations
i just wana cruise
 

woodsnake

15 Year Member
Jan 16, 2007
1,352
15
69
Hicksville, NY
Apr 13, 2013
#2
  • Apr 13, 2013
  • #2
What is your ignition set up? LOTS of ignition issues are miss-diagnosed as carb problems. Also, "farts down the tail pipes", while going down the road, does not sound good. How old is your timing gear set? Recent cam change? Is the rpm consistent with the exhaust noise? I had a similar problem after I put on my Edelbrock heads. Somehow I lost a lobe on the cam...
 

rbohm

Founding Member
Apr 12, 2002
6,698
550
204
tucson,az
Apr 13, 2013
#3
  • Apr 13, 2013
  • #3
i am thinking you need a bit more main jet, something like 72s. i would also look for vacuum leaks.
 

gikort

Member
Nov 26, 2010
82
1
9
Apr 13, 2013
#4
  • Apr 13, 2013
  • #4
What do your plugs look like?
 

Mr67Stang

Active Member
Feb 10, 2007
117
7
28
Fayetteville, NC
Apr 17, 2013
#5
  • Apr 17, 2013
  • #5
Check your distributor... for loose inards and shaft play.
 

steven miller

New Member
Aug 17, 2012
11
0
1
northern cali
Apr 18, 2013
#6
  • Apr 18, 2013
  • #6
TURNS OUT MY POINTS WERE AT .OO5 my distrbutor knoledge was blinker fluid but now its advanced
 

woodsnake

15 Year Member
Jan 16, 2007
1,352
15
69
Hicksville, NY
Apr 18, 2013
#7
  • Apr 18, 2013
  • #7
Glad to hear you fixed it!
 
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