[DML] Re: The Mask (Final ignition analysis for now)

["David Teitelbaum" <jtrealty@xxxxxxxxxxx>]

>From your description it sounds like you are not getting the full
mechanical advance. Take the distributer apart and clean the
mechanical advance and check the springs inside. Maybe they are not
correct. Next check the vacuum hoses for the vacuum advance that they
are not hard, cracked, leaking, or hooked up wrong.
David Teitelbaum
vin 10757


--- In dmcnews@xxxxxxxxxxxxxxx, "cruznmd" <racuti1@xxxx> wrote:
> Ok, figure this one out:
> 
> With the wife and kids out of town, I've had nothing but 2 glorious
> days of peace to ponder this issue. I've been feeling the behavior of
> the car while driving to and from work. Something keeps drawing me
> back to timing advance; Too much, too little, too fast (missing
> weights or springs), too slow (gummed up inside)...not sure which.
> 
> I came home today and whipped out my shiny, new timing light and 
> began to
> examine the vacuum advance in detail. If I'm doing it right, it only
> seems to do 2 steps of advance, and too much of it but again, I want
> someone to read the tach while I do this. Maybe I'm not gentle enough.
> 
> 1100-ish RPM's: 10 OR 20 degrees. (I was trying to get off of the
> micro switch.)
> 1500-ish RPM's: off the scale, say around 40 degrees. The manual
> calls for: 20 degrees at 15" Hg, incrementing in 3 steps, not two.
> 
> I then proceeded to take some of Martin's G's advice and try to clean
> out the dizzy again in case something was gummed up. I sprayed a
> little contact cleaner in the distributor because I've seen it eat
> varnish and gunk off of electrical items so well. This was an -
> instant- improvement, but still at about 1/2 to 3/4 of pedal travel
> there was bogging now combined with "herk 'n jerk". When I feather
> the throttle, it now has much better acceleration than it did before
> I sprayed the cleaner in the dizzy, as long as I don't exceed
> that "bog point" with the throttle pedal. (BTW: the "bog point" moves
> closer to the floor, the higher the RPM'S so you can slowly press the
> pedal down as you accelerate, just don't "overtake" the timing)
> 
> Still not satisfied, but having a suspicion, I put my old, blue coil
> in yet again, with the old ballast resistor, and what happens?
> Flawless. Not a stutter, jerk or stumble. Full power pulling away,
> and full power with the pedal to the floor. At least it's running
> correctly now.
> 
> What gives? Why doesn't my car accept any other coil? This is my
> 5th new one. The others were Accel and some no-name brand but this
> one is a Bosch 18k volt coil. A minor upgrade compared to the MSD's
> and Pertronix some of you guys are running.
> 
> One thing's sure: I haven't fixed this problem, only masked it.
> 
> Rich A.
> #5335




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