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  ignition problems?

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Author Topic:   ignition problems?
2bdrivn
Journeyman

Posts: 6
From: Slidell, LA, USA
Registered: Jan 2002

posted 07-13-2002 07:46 AM     Click Here to See the Profile for 2bdrivn   Click Here to Email 2bdrivn     Edit/Delete Message   Reply w/Quote
I have a pertronox in my stock distributor and a Mallory Promaster coil, Accel wires and vacuum advance. I have abig resister mounted on the shock tower next to the coil.

Problem I am having is that I am backfiring through the carb when I punch it, and it has no guts until I am around 3 grand on the tach. I heard that this could be carb related but it is new and Summit told me it sounded like poor ignition. The car does seem to load up and I can smell it getting richer if i idle around a lot in gear (under 800 rpm) and than it will cough and all until i run it at high rpm's. Could this be poor ignition at low voltage cond.


thanks

darren

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SteveLaRiviere
Administrator

Posts: 33988
From: Saco, Maine
Registered: May 99

posted 07-13-2002 05:19 PM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
I'm no fan of the Petronix systems, my brother is chasing a similar problem with his Torino.

Are you getting a full 12 volts to the ignitor?

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'70 Mustang Mach 1, '72 Mustang Sprint, '94 F-150
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73trials
Gearhead

Posts: 875
From: New Orleans, La. M&M member # 1752
Registered: Dec 2001

posted 07-13-2002 10:33 PM     Click Here to See the Profile for 73trials   Click Here to Email 73trials     Edit/Delete Message   Reply w/Quote
Welcome to M&M, Darren! Don't know much about the pertronix, but i'm sure one of our experts can help. Been thinking about installing one in my '73, but it runs so well with points that i just hadn't bothered. Slidell, huh? Gee, i know where that is!

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Erwin
'73 convertible slowly taking shape

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V8 Thumper
Gearhead

Posts: 3529
From: Orange, Ca. United States of America
Registered: Dec 2001

posted 07-14-2002 12:07 AM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
Hmmmm, I put a Petronix module in my Papa's '63 1/2 Galaxie... 429/C6. Prior to the module install, all 8 plugs were sooty black (yuk). Tuned it up, still not running as well as I wanted it to. I was close to neutering down the carb, thought we'd try the Petronix first. True, the points were pretty tired, but holy cow, what a difference the new module made! The car starts real crisp, great throttle response, with a feel-it-in-the-seat-of-your-pants horsepower increase. Maybe a healthy set of points dwelled correctly would have netted a similar result, but for a fairly tame motor with basic bolt-on goodies, I'm a believer in the Petronix get-up. Then again, I've never had to chase a ghost with one, and I've heard more than once that they are prone to hickups. Have you tried calling Petronix tech help? I might add, I also put the Flamethrower coil in along with the module...

[This message has been edited by V8 Thumper (edited 07-14-2002).]

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V8 Thumper
Gearhead

Posts: 3529
From: Orange, Ca. United States of America
Registered: Dec 2001

posted 07-14-2002 12:12 AM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
Oh hey, where's my manners? Welcome to M&M

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Fastymz
Moderator

Posts: 12015
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 07-14-2002 02:31 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
Welcome to M&M,I have run my pertronix for almost 3years now.And not one bad thing to say about it.Mine helped as much has Todd's did on his dads car.I know they need to be set at a gap,but I cant remember it for sure.I think it's a .030 gap.But call then and check 1st.Also what shape is your coil in.

"The car does seem to load up and I can smell it getting richer if i idle around a lot in gear (under 800 rpm) and than it will cough and all until i run it at high rpm's."

And THIS to me it sounds more like a carb issue then ignition.

SCOOP

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

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

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dhearn
Gearhead

Posts: 227
From: Owenton Ky,USA
Registered: Nov 2000

posted 07-15-2002 01:06 AM     Click Here to See the Profile for dhearn   Click Here to Email dhearn     Edit/Delete Message   Reply w/Quote
I am not familiar with the accel coil that you are running but pertronix will not work with a high performance coil as it will eventually burn it up. they do make a new pertronix ignitor II that will work with hi po coils. I burnt one module up with a msd blaster 3 coil hop ehtis helps.
Dennis

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