[DeTomaso] Fouled Spark Plugs

[Asa Jay Laughton]

You might also try running a different carb for a while.

Asa Jay

Asa Jay Laughton, MSgt, USAFR, Retired

& Shelley Marie
Spokane, WA

1971 Mach I Mustang  [ASA JAY]
1973 Pantera L 5533  [ASASCAT]
    
******************************     
http://www.asajay.com
http://www.teampanteraracing.com
  



Will Kooiman wrote:
> I fouled another set of spark plugs, and got stranded - again.  I love AAA
> and flat beds.  Not really, but it sure beats walking.  From now on, I'm
> carrying a spare set of plugs with me.
>
>  
>
> So, the question of the night is, "Why are my plugs fouling?"
>
>  
>
> I have:
>
> Autolite 3926's, gapped at 0.045
>
> MSD 6AL (6-7 years old)
>
> MSD ready-to-run dist no-vac advance (new)
>
> MSD blaster-2 coil (2-3 years old)
>
> MSD plug wires (new)
>
> 11:1 comp
>
> Aluminum heads
>
> CompCams 294S
>
> Holley
>
>  
>
> Could the MSD be bad?  I always thought MSD ignitions were overkill.  If I'm
> fouling plugs with an MSD, surely it would be worse w/out MSD - right?
>
>  
>
> I have a brand new 6AL that I can swap out to see if it is more reliable
> than the current MSD.
>
>  
>
> Are 3926's too cold?  The previous set of plugs were 3923's.
>
>  
>
> Is 0.045 too wide?
>
>  
>
> The carb is slightly rich, but not too bad.
>
>  
>
> It runs really strong, but I need it to be more reliable than this.  I was
> driving from Dallas back to Houston when it just stopped running.  I
> verified that it has gas, power to the MSD, spark (from timing light),
> timing is where I left it.  I replaced 3 plugs with some old plugs I had in
> the garage.  It hit a little bit, but wouldn't start.  I'm sure if I
> replaced all 8 with new plugs that it'll start right up.
>
>  
>
> On a possibly related note, my tail lights and brake lights went out.  It
> might be related to my emergency flashers, though.
>
>  
>
> One more thing - this engine runs hotter than the last.  I don't have my
> fans hooked up.  If I go less than about 40mph, it overheats.  As I was
> leaving Dallas, the temp got to about 230deg.  Surely the hot temps didn't
> hurt the plugs.  And yes, I plan on hooking up the fans this weekend.  That
> is, of course, after I fix the issue with the plugs.
>
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