Will a Duraspark cause this?

Reply Subscribe

Search this Thread

Old

Apr 18, 2004 | 05:12 PM

#1

85CREWCAB

Thread Starter

|

New User

Joined: Oct 2003

Posts: 11

Likes: 0

Will a Duraspark cause this?

Hey guys,

I have a 1985 F250 with a 460 and duraspark II ignition.The truck has started to run rough at idle and surge in moderate acceleration.I have replaced the cap,rotors,plugs and pickup module.Can the Duraspark box or the coil cause this?

Thanks

Reply

Old

Apr 18, 2004 | 05:17 PM

#2

68torino

Posting Guru

Joined: May 2003

Posts: 1,011

Likes: 0

From: South Dakota

Possible but what type of surge? I would check tranny fluid and fuel system. After that if it leads to the Duraspark or coil just have to swap them out.

Reply

Old

Apr 18, 2004 | 05:19 PM

#3

85CREWCAB

Thread Starter

|

New User

Joined: Oct 2003

Posts: 11

Likes: 0

Funny thing is that it runs great at WOT.

Go figure.

Reply

Old

Apr 18, 2004 | 09:42 PM

#4

Franklin2

Moderator

Joined: Jan 2001

Posts: 57,025

Likes: 2,757

From: Virginia

Club FTE Gold Member

The first thing I would check is the EGR valve. It could have a piece of carbon caught in it, causing it to leak. You can make a temporary block off gasket to see if the problem goes away.

Check all your vacuum lines for leaks.

How long has it been since the carb has been overhauled? Has this truck set around for any period of time? It probably has a holley 4bbl which could stand rebuild.

Reply

Reply Subscribe

Reply Share

First
Prev
1 / 1
Next
Last

All times are GMT -5. The time now is 04:04 PM.