[DeTomaso] Sparkplugs

Will Kooiman wkooiman at earthlink.net
Mon Jul 5 12:46:20 EDT 2010


I had been running race plugs (by mistake).  When I switched to street
plugs, the problem completely went away.

I had/have MSD 6AL with the appropriate MSD coil, wires, and distributor.

By the way, when I pulled the bad plugs, they were black, but they didn't
look terrible.

I'm not saying you have the same problem, but if it goes away with new
plugs, I'd definitely check the heat range of the plugs.  You should be able
to find the stock heat range online somewhere - or even at the parts stores.

-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of Henrik Svensson
Sent: Monday, July 05, 2010 10:25 AM
To: Will Kooiman; michael at michaelshortt.com
Cc: detomaso mailing
Subject: Re: [DeTomaso] Sparkplugs

Hi
 
Will, that discribes my situation exaclty. How did you solve your problem? 
 
Micheal, I'm not sure how to describe it more and what info might be useful.
But it's new built 393 stroker with 4V AFD heads. It got roller rockers and
solid mechanical lifters. it's got an Edelbrock performance intake and carb
(750) with electronic choke. For a while thougt it was the choke that made
the plugs sooty but that don't seem to be the case. The plugs looks ok but
won't fire the engine.
 
/Henrik 

________________________________

Från: Will Kooiman [mailto:wkooiman at earthlink.net]
Skickat: må 2010-07-05 16:36
Till: michael at michaelshortt.com; Henrik Svensson
Kopia: 'detomaso mailing'
Ämne: RE: [DeTomaso] Sparkplugs



I don't know the heat range of NGK BCP 6ES, but that sounds exactly like
what my car did when my plugs were too cold.

It would start great when the plugs were new, but after only a few minutes,
it would get harder and harder to start.  Eventually, I couldn't start it no
way, no how.

-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of michael at michaelshortt.com
Sent: Monday, July 05, 2010 9:14 AM
To: Henrik Svensson
Cc: detomaso mailing
Subject: Re: [DeTomaso] Sparkplugs

Can you describe the whole situation? MICHAEL SHORTT

On Jul 5, 2010 6:09 AM, "Henrik Svensson" <hsv at traen.se> wrote:

Hi

I'm looking into my starting problem and I have reached the sparkplugs.

I actually have no clue what plugs to use so I'll send a general
question here.

I have a 393 stroker with AFD 4v heads and MDS ignition.

The plugs I use today is NGK BCP 6ES.

When the plugs are new the engine fires without problem. But after a
while the engine gets harder to fire up.

The plugs does look ok to me when removing them, just a very little
sooty but not as much that is should give me problem when firing the
engine?!?

Any recommendations regarding Heat Range or electrode gap?

Henrik
#1477
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