Dan -
I struggled with this issue (missing under load at approximately 3000 RPM)
for almost a year on my BJ8. I, too, had replaced most of the electronics
after determining that fuel flow was NOT the problem. I watched the car
in a dark environment and saw the fireworks and arcing described by
other listers. I corrected that with new wires and cap but the
problem persisted.
One day while driving, the engine quit completely. One of my co-workers joked
that I now had a steady state problem rather than an intermittent
one. He was right.
I traced the failure to the "new" rotor I had installed while
troubleshooting my original
problem. Replacing the rotor with ANOTHER new one not only got my
Healey running
again but also solved my missing under load at 3K RPM problem under
load. I now carry
a couple of rotors as spares which I have installed in my car and
verified that they work
at the full RPM range. Rotors are notorious for their failures (as
evidenced by many,
many comments on this list.) Do not assume that, just because you
have replaced yours,
that it works perfectly. Just one individual's personal experience.
-pd-
'66 BJ8
At 10:56 AM 7/28/2008, Dan Stromquist wrote:
>My local shop here in Minneapolis cannot seem to figure out why the car
>misses under load. After a good warm up, it seems to run great for a few
>minutes and it idles like a champ. As soon as we hit the in town highways
>it starts to miss as soon as I accelerate, especially in the 2200 to 3000
>RMP range when I put it into overdrive and give it some gas. I know it
>seems like a fuel problem but they have assured me the flow is there and it
>is electrical after pulling the carbs and cleaning them. We replaced or
>checked the distributor (rebuilt), plugs, wires, coil, condenser, points,
>timing, new rotor, carbs cleaned and rich needles installed (they were
>rebuilt by Jim Taylor). Shoot me some ideas. The bill is out of sight. I
>suppose it is possible that some of the replacement parts are bad to so I am
>going to make up a new set of high quality plug wires, new Lucas cap,
>another new British Car Specialists rotor, condenser, and plug end caps.
>
>
>
>Daniel A Stromquist
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