That is one of the D-est DPO stories I've ever heard... didn't occur to
this mechanic to count the spark plug leads, eh? Maybe he couldn't count
above 4...
I would suggest acquiring the correct 4-cylinder chopper and trying it as
the simplest solution before changing anything else. Who knows, maybe
everything else is OK?
Good luck, hopefully this particular DPO didn't leave any more boobytraps
for you.
Michael Graziano had this to say:
>The ignition my car has in it is a Lumenition ignition. It works by
>installing a chopper (looks like a helicopter blade) under the rotor in the
>distributor. A small light sensor shoots a light beam between two sensors,
>and when the beam is broken by the chopper blade, it sends a spark.
>
>I of course learned this from reading the website. But the picture of the 4
>blade chopper didn't remind me of my chopper. Sure enough, the car has a 6
>cylinder chopper (6 blades). That's why I suddenly started having problems
>the moment I touched my timing. THe PO's mechanic must have timed it in
>such a way that the double firing on the 2 and 4 cylinders _just_ made it
>before backfiring.
>
>Essentially, I've been running on the 1 and 3 cylinders since I bought the
>car. Now I either need a new ignition, or I have to fix the one I have.
>I'm just worried that the existing ignition is toast from running
>incorrectly for so long.
>
--
Max Heim
'66 MGB GHN3L76149
Runs great,
looks particularly bad since some SUV clown backed into it.
If you're near Mountain View, CA,
it's the red one with the silver bootlid.
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