[Spridgets] Kristi's Midget

Macy Larry lmacy at mac.com
Fri Mar 25 13:31:33 MST 2011


The no spark thing happened when we changed the dizzy, put the other one back, still no spark. It's cold and getting dark. Push car off street, go inside for pizza, figure out spark later.

Larry

On Mar 25, 2011, at 13:54 PM, Jack Laird wrote:

> Gesh, no spark at all, now thinik where spark comes from. Positive side of coil, do you have elec there. Does it go into the dizzy. Does it come out of Dizzy. Do the plugs have fire?
> 
> Not a lot of options. so. is either, Coil, Condencer, Points sliped togheter mostly, or a bad dizzy cap. All bad plugs, noooo. All bad wires, Nooooo.
> 
> Might I suggest checking the coil for out put and then changeing the condencer as you see if the points are opening and closing ok.
> 
> Test coil by haveing someone crank engine while you see if fire comes off the wire as you get close to grounding it.
> 
> If this does not work change the Dizzy cap.
> 
> 
> 
>> Reposted on Spridget List with the permission of Larry Macy.
>> 
>> 
>>>> On the way home Saturday nite, I got a call. Kristi is in trouble. Her car
>> is back at the "bucking" as she called it.
>>>> 
>>>> I had to back track 30 min to find her on Rt 9. Her car is surging, not
>> bucking.
>>>> -- I rode in it for a few and then lead the 40 mph caravan back to my
>> place.
>>>> 
>>>> As best as I can describe it acts like it is getting fuel for a minute
>> (surge) the just quits for a second (bucks). If over 40 - 45 mph, it starts
>> backfiring, with flame and everything from the tail pipe.
>>>> 
>>>> The idle and carbs have been played with til the cows came home, We had the
>> 2 best OSHITers available working on it today. ANd then on the way home it
>> screwed up.
>>>> 
>>>> If I had to guess I have two hypotheses.
>>>> 
>>>> 1) partially blocked exhaust (works fie at idle, runs crappy at partial ->
>> full throttle)
>>>> 
>>>> 2) Fuel pump not delivering enough. it gets some to idle on, then cant
>> deliver enough to run on at higher RPM. so it starves the carbs for a second
>> (bucks) and the refills them ( surge).
>>>> 
>>>> As best as I understand the valves are adjusted and the carbs are tuned (If
>> you doubt Frank and Kevin, tell them, not me)
>>>> 
>>>> Ideas, Wild Assed Guesses, Anything?? all welcome!!
>>>> 
>>> 
>> 
>> Since all of this the dizzy has been changed out with another dizzy and we
>> lost spark.  "New" dizzy was 180 degrees out so wires were changed.  Put the
>> "old" dizzy back in and wires switched back and still no spark.
>> 
>> 
>> Kristi & Lambert
>> '74 RWA Midget
>> '77 RB Midget
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-- 

Larry B. Macy, Ph.D.
macy at upenn.edu
Senior IT Program Director
Neuropsychiatry Section
Department of Psychiatry
University of Pennsylvania
3400 Spruce St. - 1015 Gates
Philadelphia, PA 19104

 I have great faith in fools - my friends call it self-confidence.
 - Edgar Allen Poe


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