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

Tune up question.

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Old 07-15-2018, 06:59 PM
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Joe Pierce
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Default Tune up question.

I am going to tune up my 1992, it has less than 39000 but appears to be all original. Should I replace the opti spark? (it runs good)
Old 07-16-2018, 01:15 AM
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cv67
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St. Jude Donor '05

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Leave it be and enjoy
Old 07-16-2018, 07:57 AM
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radar502
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I have a 93 with the Org.Opiti on it and runs great 120,000 miles but I did have a 95 with 40,000 the opiti went bad .it will let you know when it wants' new one .. The deal is the new ones are not as good as the Org . ones if not bracken, you the rest .. A bigger deal is the water pump if that goes there go the opiti so make sure the pump is good and if replacing get it a new one not old rebuilt one .. After owning 5-C4s been there done that ..
Old 07-18-2018, 07:34 AM
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fake
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I have a car with 130,000 miles on it never change any thing .I would not go on any long trips with out a towing service phone number in my phone or glove department .(Flat bed only)
Old 07-18-2018, 07:49 AM
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radar502
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Originally Posted by fake
I have a car with 130,000 miles on it never change any thing .I would not go on any long trips with out a towing service phone number in my phone or glove department .(Flat bed only)
Your right the opiti can and will go at anytime no warning AAA all the way .. and your not going to change it on side of the road for sure .. Putting new cap rotor on my 93 and pump ETC. I dread it .. somebody got to do it ..
Old 07-18-2018, 01:14 PM
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pcolt94
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I agree with the others, leave the opti alone.

Mileage is not the sole deciding factor for doing routing maintenance. Time of operation comes into the equation also. City mileage can be a big factor when doing engine oil, transmission oil, plugs, antifreeze and the other items that fall under routine maintenance. If you feel you have to do something plugs are a good thing to do.

Replacing the wires are a good thing to do when you are during opti replacement. Installing wires on the left side of the car is difficult and much easier when all things are apart doing the opti. Unless you think the wires are really bad at this time, I would just keep a close eye on them. If you do wires, be prepared to break the wire looms as you will probably have to buy some.Back 10 years ago I did a couple opti replacements. They were GM type replacements. Now today I would consider doing the cap and rotor so I can keep the optical sensor in my current opti body.

Aside from the plugs, a throttle body clean out, and speed density unit cleaning of the wires are things to keep up with also. Always use the proper cleaners for each unit as they are different and why not do it right the first time or possible cause damage.

Back 10 years ago I did a couple opti replacements. They were GM type replacements. Now today I would consider doing the cap and rotor so I can keep the optical sensor in my current opti body.

Last edited by pcolt94; 07-18-2018 at 01:19 PM.

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