<VV> 66 Corsa 140 - No Spark
FrankCB at aol.com
FrankCB at aol.com
Wed Aug 30 21:30:46 EDT 2006
Or, if you don't have a voltmeter handy (but you should) simply run a jumper
wire from the positive post of the battery to the positive post of the spark
coil. Then try to start the car. If it starts easily and runs, you know
that the equipment DOWNSTREAM of the place you tied the jumper to is OK (i.e.
the coil and distributor and points and condenser). So the problem lies with
the stuff UPSTREAM of that point (i.e., the ignition switch, the wiring, the
resistor wire, etc.) I call this the "divide and conquer" approach to
solving electrical problems.
Just use a moderately heavy wire (gauge 16 or heavier) and do NOT keep
the engine running very long under these conditions since this setup puts the
full 12 volts (more like 14+ with the alternator running) constantly on the
points and will quickly wear them out.
Good luck and let us know what you find.
Frank "likes sneaky shortcuts" Burkhard
In a message dated 8/29/2006 11:17:54 AM Eastern Standard Time,
tonyu at roava.net writes:
Dirty connections on the firewall plug? Popular spot for corrosion
and plain dirt, makes for intermittent spark among other things when
unplugged and then reconnected again... you might pop it apart and
spray it bigtime with WD-40 or PB Blaster, maybe even give the
contacts a bit of a scrub with a stiff brush, and then see if your
no-start problem goes away.
If no help, dig out the volt meter and start chasing down the missing
voltage to the coil. Expect 12 volts with points open on both of
the terminals of the coil, switch ON. Points closed, the coil's +
terminal should have ~8 volts, give or take a volt or so, and of
course the - terminal should be zero.
tony..
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