93 C4 100k Service?
Thread Starter
Intermediate
Joined: Dec 2013
Posts: 28
Likes: 5
93 C4 100k Service?
Hi All!
I have been learning a lot from this forum over the years (thank you all!). I have finally joined and need to seek some specific advice.
I have a 93 C4 that is just approaching 100k miles. I have owned it 10 years and put 30k miles on it. I am about to replace the plugs and wires, but wonder what else I should do as PM for the ignition system. Should I mess with the opti and replace the cap and rotor too? I don't know if it has ever been touched.
What else needs to be done?
Thanks for any advice!
I have been learning a lot from this forum over the years (thank you all!). I have finally joined and need to seek some specific advice.
I have a 93 C4 that is just approaching 100k miles. I have owned it 10 years and put 30k miles on it. I am about to replace the plugs and wires, but wonder what else I should do as PM for the ignition system. Should I mess with the opti and replace the cap and rotor too? I don't know if it has ever been touched.
What else needs to be done?
Thanks for any advice!
Melting Slicks
Joined: Mar 2008
Posts: 2,351
Likes: 222
From: Delta B.C. Canada
2023 C7 of the Year Finalist - Unmodified
2019 C4 of Year Finalist (appearance mods)
2015 C4 of Year Finalist
Change all fluids: trans, diff, ps, brake, coolant. (Unless they have been done recently.)
Consider replacing the Multec injectors with Bosch III.
Check suspension bushings for rot. Replace as needed.
If your tires are more than 6 years old, consider replacing.
Consider replacing the Multec injectors with Bosch III.
Check suspension bushings for rot. Replace as needed.
If your tires are more than 6 years old, consider replacing.
Le Mans Master
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
I would leave opti alone since removing water pump is involved. L98 is another matter since distributor is in the open. At 10 years replacing most fluids would be a good idea.
Safety Car
Joined: Aug 2002
Posts: 3,842
Likes: 230
From: SANTA CRUZ CA
If you own an Owner's Manual, there is a helpful list of items to be serviced based on mileage...... the items are listed under MAINTENACE.
If you don't own an Owner's Manual, you might check ebay regularly.
If you don't own an Owner's Manual, you might check ebay regularly.
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 206
From: Orlando FL
If you are going to do the wires, you will probably need a set of wire holders. Most likely many will break when you remove the wires from them. Or you can just do the job and find out what breaks and then replace only them.
You might need to remove the belt and some other items to get to the left side wires. It is pretty tight in there and wire length is at a minimum and not much wiggle room to get them back on.
I did my wires the first time I did the opti which made thing a whole lot easier. You will definitely work at getting those wires back on.
Good advice to leave the opti alone if it's still running good. I would stay alert and check the bottom of the pump from time to time to make sure it is not leaking.
You might need to remove the belt and some other items to get to the left side wires. It is pretty tight in there and wire length is at a minimum and not much wiggle room to get them back on.
I did my wires the first time I did the opti which made thing a whole lot easier. You will definitely work at getting those wires back on.
Good advice to leave the opti alone if it's still running good. I would stay alert and check the bottom of the pump from time to time to make sure it is not leaking.
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