Slight "sputter"
Thread Starter
Heel & Toe
Joined: Jun 2010
Posts: 15
Likes: 0
Slight "sputter"
I just put a new holley 670 on my 73 w/350 190hp 4spd.I put new points,cap,rotor,wires.I adjusted points with a dwell and set initial timing with a timing light.I drove the car and it "sputtered" alot in 1st and 2nd around 1500rpm.I called holley and they told me adjust the floats which I did and the car ran 100% better but now when I slow down and take a turn and start to accelerate I have a slight "sputter"I have plenty of gas in the tank but just can't figure out why this is happening.I did notice when I was setting the timing and hooked up the distributer vacuum line there was no change in idle.could this be the problem or another one I should add to the list.thanks for any and all help.
Burning Brakes
Joined: May 2006
Posts: 774
Likes: 1
From: Round Rock Texas
I just put a new holley 670 on my 73 w/350 190hp 4spd.I put new points,cap,rotor,wires.I adjusted points with a dwell and set initial timing with a timing light.I drove the car and it "sputtered" alot in 1st and 2nd around 1500rpm.I called holley and they told me adjust the floats which I did and the car ran 100% better but now when I slow down and take a turn and start to accelerate I have a slight "sputter"I have plenty of gas in the tank but just can't figure out why this is happening.I did notice when I was setting the timing and hooked up the distributer vacuum line there was no change in idle.could this be the problem or another one I should add to the list.thanks for any and all help.
Safety Car
Joined: May 2003
Posts: 3,814
Likes: 105
From: Dearborn Heights Michigan
There are several possible probs with the 670. Make sure the accelerator lever is on the cam not off of it.
Also, my 670 came with 65 & 68 jets which are a bit lean and will cause a stumble.
Put the 68 secondary in the primary and a 72 in the secondary.
I ended up with 72 & 80's in mine and it runs great.
Also, my 670 came with 65 & 68 jets which are a bit lean and will cause a stumble.
Put the 68 secondary in the primary and a 72 in the secondary.
I ended up with 72 & 80's in mine and it runs great.
Last edited by FKING1; Jul 9, 2010 at 04:09 PM.
Burning Brakes
Joined: May 2006
Posts: 774
Likes: 1
From: Round Rock Texas
