Msd 6al Question

smkshw

5 Year Member

Feb 12, 2010

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Jun 6, 2015

#1

• Jun 6, 2015

• #1

hey guys

my car seems to run ok,just when i start it,its as if its firing up late?...not as crisp fire up as i want....so i disconected the original coil wires that hook up to the msd box,and pluged it back in the factory way to see if that helped,but it dosnt start?....shouldnt it fire if i hook it back to foctory plug?.....as far as i remember it used too?

its a 331 stroker thanks

 

Jared Hess

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Dec 18, 2012

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Six Mile Run, PA

Jun 6, 2015

#2

• Jun 6, 2015

• #2

I've done this to mine and it works with the msd and without maybe you have your wires crossed?

 

smkshw

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Jun 6, 2015

#3

• Jun 6, 2015

• #3

no only goes one way?....should work weird?....did my timing its at 14?....any thoughts guys?

 

Jared Hess

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Dec 18, 2012

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Six Mile Run, PA

Jun 6, 2015

#4

• Jun 6, 2015

• #4

I forgot it's a plug lol I cut mine off and spliced I was remembering last time I switched mine I had to make sure not to cross them.

 

smkshw

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Jun 7, 2015

#5

• Jun 7, 2015

• #5

i just dont get it?...msd is disconected?....and its dosnt fire?....hooked back up,and it fires?

the factory plug is giving the signal to the msd box?,should work?!

 

jrichker

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Jun 7, 2015

#6

• Jun 7, 2015

• #6

MSD wiring:

Instead of using the battery negative terminal, attach the heavy gauge black wire to the body ground point by the windshield washer filler.

The battery common ground is a 10 gauge pigtail with the computer ground attached to it.
Picture courtesy timewarped1972

 

smkshw

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Jun 7, 2015

#7

• Jun 7, 2015

• #7

jrichker said:

MSD wiring:

Instead of using the battery negative terminal, attach the heavy gauge black wire to the body ground point by the windshield washer filler.

The battery common ground is a 10 gauge pigtail with the computer ground attached to it.
Picture courtesy timewarped1972

Click to expand...

the msd works,but when i unplug the factory plug to the msd,and plug it back to the coil,it dosnt start?.....so when its back to the stock way(msd deleted) car dosnt start?
i have the harness i should have said...so if u look at the diagram,i unplug it from there,wich makes the msd disconected from car,then i plug it back to coil instead of msd?

 

Last edited: Jun 7, 2015

smkshw

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Feb 12, 2010

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Jun 7, 2015

#8

• Jun 7, 2015

• #8

ok well here is a update if anyone cares....i have a msd coil....i put my stock coil back on and it fired perfectly!...with msd disconected....so i guess the coil was bad and the msd compensated....so thats that!

ps...thats the second msd coil in 2 years

 

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