[DML] Re: Still -more- ignition nonsense....

[tobyp@xxxxxxxxxxxx]

Rich - I know that you've been bouncing this problem around for a 
while.  I wanted to relate something that happened to me on an SOB 
(some other brand) several years ago.  This was a Honda Accord.  I 
had done a complete tune up, with all new parts.  A week later, my 
wife was pulling out of a parking lot, and the car died.  It wouldn't 
even sputter when attempting to start it.  I pulled a spark plug, and 
it showed a fat blue spark when grounded to the engine while 
cranking.  The carb has a fuel level sight for the bowl, and was at 
the proper level.  The accelerator pump shot a good stream into the 
throat as it was supposed to do.  Cam belt, distributor rotation, all 
things checked out okay.  All the elements for "life", but it 
wouldn't run.  In the final analysis, the new distributor cap had a 
casting flaw in it that was not visible to the naked eye when clean 
and new.  After some period of time, traces of carbon collected in 
the flaw, and it eventually became an alternate electrical pathway 
for the HT spark.  It turns out that the electrical resistance for 
the spark plug in the cylinder during the compression stroke goes way 
up.  The spark looked for an easier path, and found the flaw to 
ground itself to.  The spark plug worked fine when removed, because 
of the lower pressure and the lower resistance.  All this to say ... 
could you have a flawed cap or rotor that is bleeding off spark when 
the pressures build in the cylinder suddenly during acceleration?  
It's a wild idea, but you've heard many so far in this little journey 
of yours.

Toby Peterson  VIN 2248 "Winged1" - with MSD Blaster2 coil
DeLorean Parts Northwest, LLC
www.delorean-parts.com     


--- In dmcnews@xxxxxxxxxxxxxxx, "cruznmd" <racuti1@xxxx> wrote:
> Uh...I'm not sure you completely read the earlier posts. I have 
> indeed replaced the ignition ECU, I was loaned a functional spare 
for testing. There was no improvement.
>> Some new theories are:





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