• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

Spark being blown out?

  • Thread starter Thread starter Brads Coupe
  • Start date Start date May 27, 2004

Brads Coupe

Sweeeeet!!!
Founding Member
Apr 18, 2000
2,838
0
0
Calgary , Alberta, Canada
May 27, 2004
#1
  • May 27, 2004
  • #1
It seems my stock ignition isn't doing the job. I was drivng my car yesterday and got into it in 4th. It was pulling hard when all of a sudden the car went dead, it was like hitting a brick wall. I instantly let off the gas and glanced at my fuel pressure guage. The car came back to life and the fuel looked fine. It scared the **** out of me. Thought I blew my motor up. I called my tuner up and asked what just happened. He thinks that my spark is being blown out? Have any of you experienced this with a stock ignition? I guess its time to buy an MSD box. This also might be the reason why we were seeing a power drop right at the top of the RPM band on the dyno, around 5500rpm's the car would lose power. We thought it might be valve float but maybe its spark?
 

blkstangman88

New Member
Apr 6, 2004
646
0
0
May 27, 2004
#2
  • May 27, 2004
  • #2
could be, get a msd or crane ignition set up and run a tighter gap...this should work if it is getting blow out.
 

TwinTurbo93

Founding Member
Jan 19, 2002
153
0
0
Orlando
May 27, 2004
#3
  • May 27, 2004
  • #3
how much boost and what plug gap are you running? I run 15psi with just an MSD coil on my car and its fine.
 

Brads Coupe

Sweeeeet!!!
Founding Member
Apr 18, 2000
2,838
0
0
Calgary , Alberta, Canada
May 27, 2004
#4
  • May 27, 2004
  • #4
11psi, the plugs are gapped to 35. Stock ignition right now. I think I'm gonna buy a Digital 6 plus.

TwinTurbo93 said:
how much boost and what plug gap are you running? I run 15psi with just an MSD coil on my car and its fine.
Click to expand...
 

TwinTurbo93

Founding Member
Jan 19, 2002
153
0
0
Orlando
May 27, 2004
#5
  • May 27, 2004
  • #5
It will be a good investment anyways. Its quite possible that you are blowing out the spark, mine are gapped at 32, but every combo is gonna be different. Good luck getting it tracked down!
 

Brads Coupe

Sweeeeet!!!
Founding Member
Apr 18, 2000
2,838
0
0
Calgary , Alberta, Canada
May 27, 2004
#6
  • May 27, 2004
  • #6
What's your setup like? Any pics? Numbers?

TwinTurbo93 said:
It will be a good investment anyways. Its quite possible that you are blowing out the spark, mine are gapped at 32, but every combo is gonna be different. Good luck getting it tracked down!
Click to expand...
 

TwinTurbo93

Founding Member
Jan 19, 2002
153
0
0
Orlando
May 27, 2004
#7
  • May 27, 2004
  • #7
8.2:1 compression built 306, stage 2 GT40X heads, trickflow track heat intake, custom grind turbo cam, lots of suspension, ect. I haven't had the car together that long really, its been sitting more than anything since I have grenaded 2 transmissions, I have an Art Carr AOD/w transbrake on the way though so its almost time for the track. Heres a pic of the engine
 

Brads Coupe

Sweeeeet!!!
Founding Member
Apr 18, 2000
2,838
0
0
Calgary , Alberta, Canada
May 27, 2004
#8
  • May 27, 2004
  • #8
Nice! Any dyno numbers?

TwinTurbo93 said:
8.2:1 compression built 306, stage 2 GT40X heads, trickflow track heat intake, custom grind turbo cam, lots of suspension, ect. I haven't had the car together that long really, its been sitting more than anything since I have grenaded 2 transmissions, I have an Art Carr AOD/w transbrake on the way though so its almost time for the track. Heres a pic of the engine
Click to expand...
 
You must log in or register to reply here.

Similar threads

B
Electrical Why does my fox body keep frying eecs
  • brandyn200
  • Jun 20, 2026
  • Fox 5.0 Mustang Tech
Replies
8
Views
475
Fox 5.0 Mustang Tech Jun 25, 2026
AeroCoupe
F
Fox 1990 Mustang GT 5.0 A9L – Engine suddenly shuts off but immediately restarts when key turned
  • FishermansFriend
  • Aug 9, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
16
Views
655
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Aug 30, 2026
General karthief
B
No spark. 1990 foxbody 5.0 gt
  • Boogi
  • Nov 16, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
0
Views
242
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Nov 16, 2025
Boogi
B
8
Electrical Crank-no start ... no spark ... no injector pulse, was it something I did? (redux)
  • 85gtCOBRA
  • Oct 28, 2025
  • Fox 5.0 Mustang Tech
Replies
2
Views
666
Fox 5.0 Mustang Tech Oct 29, 2025
85gtCOBRA
8
Resolved 93 Mustang 5.0 - Cranks but does not start
  • dan50
  • Jul 18, 2026
  • Fox 5.0 Mustang Tech
Replies
6
Views
437
Fox 5.0 Mustang Tech Jul 18, 2026
dan50
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?