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Author Topic:   MSD 6AL
CJR
Journeyman

Posts: 39
From: Mt. Olive NC
Registered: May 2002

posted 07-10-2003 06:35 PM     Click Here to See the Profile for CJR   Click Here to Email CJR     Edit/Delete Message   Reply w/Quote
Anyone had any problems with these breaking down at 6000+? Mine has had the problem since I changed out the duraspark for the MSD. It starts breaking down anywhere from 6000 to 6300. Any Ideas?

Chuck

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Fastymz
Moderator

Posts: 11429
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 07-10-2003 07:00 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
Chuck could it be the rev control kicking in?

------------------
SCOOP

2.26 60'S
14.9 @ 90.86MPH

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

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

[This message has been edited by Fastymz (edited 07-10-2003).]

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Dubz
Gearhead

Posts: 443
From: Manitoba Canada
Registered: Oct 2002

posted 07-11-2003 12:06 AM     Click Here to See the Profile for Dubz   Click Here to Email Dubz     Edit/Delete Message   Reply w/Quote
my guess would be the rev limiter as well

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67Coupster
Gearhead

Posts: 179
From: Fortson, GA, USA
Registered: Oct 2001

posted 07-11-2003 12:44 PM     Click Here to See the Profile for 67Coupster   Click Here to Email 67Coupster     Edit/Delete Message   Reply w/Quote
Chuck,

I was having some problems when I first installed my 6AL also. If the rev limiter is in fact kicking in early you can troubleshoot this by removing the chip and see if you still have the miss. Mine started working good with the chip removed. I called MSD and they told me to check my spark plug wires and ensure that the power and ground wires were routed seperately from the dist. wires. I put a new set of wires on and isolated the distributor wires from the power wires and the trouble went away. Hope this helps.

If you still have the miss with the chip removed you might want to look at something else. I know you just got the heads but what about the valve springs and idea of what the seat pressure is. Also what are your plugs gapped at?

Let us know what you find.

------------------
James
67 Coupe
393W, 4 Speed,

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