No Spark from Coil
#1
No Spark from Coil
95 Disco Standard
Any thoughts on no spark from the coil?
Seemed to happen intermittently and now won't start at all and have traced it to no spark. Been following the Rave troubleshooting and I've done the 4 voltages at the coil and they seem good. For test 3, amplifier switching, I'm getting 12 volts with the ignition off where it says it should be zero. I seem to remember that this test was an error in Rave manual so not sure on that? Can anyone confirm proper procedure?
I have already fitted new coil and amplifier. New wires, cap and rotor. Pickup in the distributor seems to have the correct resistance (3.5k ohms). Air gap is good. Anything else I can check?
Thanks
Any thoughts on no spark from the coil?
Seemed to happen intermittently and now won't start at all and have traced it to no spark. Been following the Rave troubleshooting and I've done the 4 voltages at the coil and they seem good. For test 3, amplifier switching, I'm getting 12 volts with the ignition off where it says it should be zero. I seem to remember that this test was an error in Rave manual so not sure on that? Can anyone confirm proper procedure?
I have already fitted new coil and amplifier. New wires, cap and rotor. Pickup in the distributor seems to have the correct resistance (3.5k ohms). Air gap is good. Anything else I can check?
Thanks
#2
my service manual says under amp switching test >>connect volt meter between battery + and coil -.....should be zero volts with ign switch off,... then zero volts with switch on, ...then crank engine and voltage should increase.........if voltage increases then move to coil test > remove HT lead from dist cap and hold about a quarter inch from the head or block,,crank engine and you should get good strong spark>>>if spark is weak or not there at all..try a new coil or lead
also possible is a bad rotor ( even though it's new)
pick up coil should have between 2k and 5k ohms resistance
go back over ALL the connections, make sure the ht lead is seated well in the coil and cap
also possible is a bad rotor ( even though it's new)
pick up coil should have between 2k and 5k ohms resistance
go back over ALL the connections, make sure the ht lead is seated well in the coil and cap
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