C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Can a optispark be inspected if bad?

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Old Oct 9, 2003 | 10:24 PM
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Default Can a optispark be inspected if bad or good?

Just wondering i've never changed it before, because i've bought it used,
Is there a visual indication that the opti has not been changed before?


[Modified by blk95, 3:25 AM 10/10/2003]
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Old Oct 10, 2003 | 09:02 AM
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Default Re: Can a optispark be inspected if bad or good? (blk95)

There is no way to tell. Usually a replaced Opti will be pretty clean, an old one will be dirty. You could pull it off and inspect it, but for the amount of work involved you may as well put a new one on. Are you having problems with your car?
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Old Oct 10, 2003 | 09:42 AM
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Default Re: Can a optispark be inspected if bad or good? (Aaron71771)

:iagree:
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Old Oct 10, 2003 | 07:26 PM
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Default Re: Can a optispark be inspected if bad or good? (blk95)

Just wondering i've never changed it before, because i've bought it used, Is there a visual indication that the opti has not been changed before?
[Modified by blk95, 3:25 AM 10/10/2003]
No not that I am aware of. Most reman units can have a cast metal or some other nasty looking back plate, whereas the originals had machined aluminum from my experiences.

Maybe if it is surrounded in RTV. Factory didn't do that, but anybody else who knows the Opti probably would.
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Old Oct 11, 2003 | 12:18 AM
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Default Re: Can a optispark be inspected if bad or good? (Aaron71771)

There is no way to tell. Usually a replaced Opti will be pretty clean, an old one will be dirty. You could pull it off and inspect it, but for the amount of work involved you may as well put a new one on. Are you having problems with your car?
I don't know if its going or not because i'm experiencing small puffs of backfiring when hammering the gas and letting off the throttle which i've never noticed before. Is that normal? My dash light dimming out sometimes and the voltage is jumping up and down.
I did plugs and wires last year...Maybe i should do the opti soon.
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Old Oct 11, 2003 | 09:20 AM
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Default Re: Can a optispark be inspected if bad or good? (blk95)

Has the PCM thrown any codes?
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Old Oct 12, 2003 | 01:45 PM
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Default Re: Can a optispark be inspected if bad or good? (ittlfly)

Has the PCM thrown any codes?

No, not that i know of
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Old Oct 12, 2003 | 07:21 PM
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Default Re: Can a optispark be inspected if bad or good? (blk95)

Codes don't help.
I got no codes at all, and my cap & rotor where completely gone.

You can disconnect the coil wire, and you won't trip any codes.
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Old Oct 13, 2003 | 01:07 PM
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Default Re: Can a optispark be inspected if bad or good? (BrianCunningham)

You can hook an oscilloscope to it and check both lo-res and hi-res signal waves coming from it. But idle is one thing compared to WOT spurts.

I've never done this, but read it in another thread.
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Old Oct 13, 2003 | 09:46 PM
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Default Re: Can a optispark be inspected if bad or good? (Goody)


I should eventually change it....i was looking at the Dynaspark man there expensive...double the dam price..600
Does anyone have any experience with the dyna spark optis
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Old Oct 14, 2003 | 08:27 AM
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Default Re: Can a optispark be inspected if bad or good? (blk95)

I should eventually change it....i was looking at the Dynaspark man there expensive...double the dam price..600
Does anyone have any experience with the dyna spark optis
I don't, but I can say they're offering significant improvements over the O.E.M. Opti and their claims are substantial.

It could very well be the LAST Opti you'll ever have to buy! I'm thinking about contacting them when mine finally goes kaput! :thumbs:
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Old Oct 14, 2003 | 12:26 PM
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Default Re: Can a optispark be inspected if bad or good? (blk95)

How many miles on the opti? ("Normal" is anything from ~60K-110K miles, usual is ~80K-90K miles)

Is the water pump begining to weep? If it is, and the mileage is right, plan on replacing both.
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Old Oct 14, 2003 | 12:32 PM
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Default Re: Can a optispark be inspected if bad or good? (blk95)

I did the DynaSpark Opti last month. Very straightforward. So far it has performed flawlessly. Fit and finish were perfect. I replaced the water pump at the same time, along with a bunch of other stuff at the same time. By far, the easiest component I replaced was the Opti.

:cheers:
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