Generally if the coil or elsewhere in the ignition LT is going intermittent
it shows on the tach by dropping to zero even though the momentum of the car
is still spinning the engine. Electric tachs only of course. When my coil
started going it did so at any revs. If you can reproduce the problem at a
standstill then clip a timing light onto the coil lead and each plug lead.
If the flashing gets erratic with the missfire then you know it is ignition,
LT or HT, otherwise fuel. And fuel starvation will affect at higher revs.
PaulH.
----- Original Message -----
From: "Malcolm Jeffcock" <mjeffcock@tru.eastlink.ca>
To: <mgs@autox.team.net>
Sent: Wednesday, August 04, 2004 2:13 AM
Subject: symptoms
> What are symptoms of a bad coil ? My car has been acting odd,
once warm it sputters and coughs at about 3,000rpm, if I slip it out of gear
allowing revs to drop to about 1,000 it is fine until it climbs back to
3,000. I changed condensor with no resulting change....
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