Re: [DMCForum] Re: Shakedown Breakdown (More ignition troubleshooting)

[Jim Strickland <ihaveanaccount@xxxxxxxx>]

I've read that's exactly the symptom of the pulse coil.  
I assume that heat expansion breaks a contact in the coil or connector.  

It's not like the distributor has a lot of parts.  The coil is an easy
fix once you get the distributor out of the car.

Jim

On Mon, 02 Aug 2004 13:38:54 -0000 "cruznmd" <racuti1@xxxxxxxxxxxx>
writes:
> Good question. I have not measured it within the last few days, but 
> the last time I measured it, it was around 7 or 8 volts, which I 
> know 
> is a bit low.
> 
> The one thing I don't want to hear, is that this is a pulse coil 
> problem. The dizzy is a pain in the ass to get at, and I have never 
> taken a Bosch dizzy apart. I don't think that's the problem though 
> becuase it's usually a "die, cool down, work, die again" symptom.
> 
> Rich A.
> 
> --- In DMCForum@xxxxxxxxxxxxxxx, "Dave Stragand" 
> <dave.stragand@xxxx> 
> wrote:
> > What is the -voltage- at the coil?
> > 
> > -----Original Message-----
> > From: cruznmd [mailto:racuti1@xxxx] 
> > Sent: Sunday, August 01, 2004 9:35 PM
> > To: DMCForum@xxxxxxxxxxxxxxx
> > Subject: [DMCForum] Shakedown Breakdown (More ignition 
> troubleshooting)
> > 
> > 
> > After advancing the timing back to 13 degrees, there was 
> definitely 
> > an improvement in performance, but still some small bit of the 
> > problem remains. I was even able to run the new coil with better 
> > results, but still the old, blue coil works better.
> > 
> > Two things of note: 
> > 1. When the ballast resistor has been powered for a while and it's 
> 
> > good and hot, the resistance increases. The lower one read .9 ohms 
> 
> > and the upper one read .7-.8 ohms. This is nearly double the rated 
> 
> > value. I think it's breaking down and should be replaced.
> > 
> > 2. With my shiny, new timing light, I was able to observe the 
> > different types of timing advance;
> > 
> > In accordance w/the manual, under vacuum advance, it has 3 steps 
> and 
> > the timing incremented accordingly. I then removed the vacuum line 
> 
> > from the distributor and checked the centrifugal advance. It 
> > increments to the proper points at the proper RPM's as far as I 
> can 
> > tell. It's hard to see the tach and read the timing at the same 
> time.
> > 
> > Under load, it's a different story. The car hesitates a bit when 
> you 
> > pull away, as though the advance is sticking and when it "breaks 
> > free", acceleration is smooth and steady.
> > 
> > Does this sound cracked or is it feasible?
> > 
> > Rich A.
> > #5335
> > 
> > 
> > 
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