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Inside the optispark

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Old Nov 9, 2018 | 08:18 PM
  #21  
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Originally Posted by Tom400CFI
So you've got spark coming from the coil....but none coming from any of the plug wires?

You got spark coming from the distributor END of the coil wire?
spark only coming from coil itself none from Opti brand new Opti
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Old Nov 9, 2018 | 08:19 PM
  #22  
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Originally Posted by 1993C4LT1
Friend of mine had that "err" in his 95. Turned out to be a bad pcm.
I’ve replaced the ecm and had it
reflashed
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Old Nov 9, 2018 | 09:18 PM
  #23  
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Originally Posted by 95’er

spark only coming from coil itself none from Opti brand new Opti
So is spark making it from the coil TO the opti? B/c there is a wire that connects the coil to the opti. I'd test that wire. If the wire is good, and your coil makes sparks when you crank the engine...you need a new cap and rotor.
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Old Nov 10, 2018 | 11:11 AM
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Easiest way to tell that there is spark from the coil is to crank the engine with the distributor end of the coil wire held near the block and observe the spark. If that has been done, then there is a problem with the distributor.

If your getting spark at coil the distributor is turning, otherwise there would be no optical pulses to fire the coil.
But the rotor could be defective. I'm assuming that you installed the distributor without opening it.
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Old Nov 11, 2018 | 03:49 PM
  #25  
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Originally Posted by belairbrian
Easiest way to tell that there is spark from the coil is to crank the engine with the distributor end of the coil wire held near the block and observe the spark. If that has been done, then there is a problem with the distributor.

If your getting spark at coil the distributor is turning, otherwise there would be no optical pulses to fire the coil.
But the rotor could be defective. I'm assuming that you installed the distributor without opening it.
I did install it without opening it brand new unit was I supposed to open it ? But I didn’t check spark coming from wire just coil itself I’ll check that tomorrow
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Old Nov 11, 2018 | 03:50 PM
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Originally Posted by 2LZ
Mine ran great but had a wiggly bearing so i replaced it with an AIP unit. I cleaned and swapped in my Mitsu sensor. All is well and I have the new AIP sensor as back stock.
Main thing is don't bolt it down if it's not perfectly flush with the timing cover. Ask me how I know. Also, fire it before you put on the water pump. Will save you hours of headache.
what’s a Mitsu sensor
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Old Nov 11, 2018 | 03:50 PM
  #27  
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Originally Posted by Tom400CFI
So is spark making it from the coil TO the opti? B/c there is a wire that connects the coil to the opti. I'd test that wire. If the wire is good, and your coil makes sparks when you crank the engine...you need a new cap and rotor.
wI’ll check that wire tomorrow
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Old Nov 11, 2018 | 06:22 PM
  #28  
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Originally Posted by 95’er

what’s a Mitsu sensor
original optispark distributors had the optical pick up made by Mitsubishi Electronics, thus "Mitsu". They can be identified by the Mitsubishi tri-star Logo molded into the optical pickup.

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