Folks:
About 10 days ago I solicited some suggestions in hunting my low
speed miss. As you may recall, it would miss 2 maybe 3 times pulling
away from a light. The most reproducible way to get it to miss was to
put it in 4th, let the RPMs drop below 2,000 and then roll on the
throttle. 2-3 pops and it would accelerate smoothly.
To date:
Regapped plugs
New points, condenser, dizzy cap, plug wires
Sync carbs, new dashpot oil
Check compression, set mixture.
Set timing to 10 BTDC w/o vacuum retard.
Checked for vacuum leaks
Replaced frayed ground lead in dizzy.
Checked dizzy phasing
Suggestions from listers:
Compression
Bad Coil
Dizzy phasing
Dizzy cap
Point gap
Loose carb needle
As you can see, I had started to work my way through the list of
suggestions offered by the list (Thanks for the suggestions everyone!)
but no joy.
As I was rummaging around, I found a set of spare plugs I had
purchased a year ago. I thought "what the hey, I will toss them in."
Gapped and installed. Voila, miss is gone!!!!
The only thing I can think of is that I must have damaged the
older plugs somehow over the winter. They had less than 500 miles on
them, and they were platinum plugs. I had used platinum because when I
had bought plugs the first time, they were out of the plain vanilla
type, and the platinum were only a couple dollars more. They worked fine
last summer, so I can only guess that I dropped one, cracked an
insulator, or something. The gaps were waaay off when I regapped them,
so I know they got kicked around a bit before I reinstalled them this
spring (I had removed them and shot a bit of oil in each cylinder prior
to winter storage of the motor).
Anyway, fresh plugs (non-platinum this time) and life again is
sweet. It will be interesting to see if they die after 500 miles, but I
think not.
Your support is much appreciated.
Cheers,
Vance
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