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Tune-up tips?

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Old Aug 7, 2007 | 04:55 PM
  #1  
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Default Tune-up tips?

Okay, I've worked on the Vette all winter, got everything running exceptionally well, been to a few shows this summer, etc..
The next thing I need is a tune-up(plugs, wires, etc.). As best I can tell from my documentation, the last full tune-up (with all AC Delco stuff I might add)was only about 1700 miles ago! Wait, that was 10 years ago!
Should I wait a little longer? The plugs look like they'll need a good soaking of PB Blaster or the like before I could even attempt to break them loose. Also, it doesn't look real easy getting to them either. Any suggestions?
As I said, it's running good, but I swear I'm hearing a miss when it's cold.
A friend of mine told me "don't fix it if it isn't broke", but...it has been 10 years!
Tune-up based on mileage or time passed?????
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Old Aug 7, 2007 | 05:30 PM
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Yes, tunup for sure. Just as there is a mileage requirement there is a time requirement too.

First, don't limit this to just plugs and wires. Check, clean, and or replace the points in your distributor.

Replacing the plugs is done from both top and bottom, using everything from a ratchet with a wobble, wrenches, and stubby wrenches. Use whatever works and remember to go slow.

I would suggest replacing the wires too with a more modern spiral core wire.

Change all your fluids. Flush your coolant system and refill. Change the oil, trans fluid, power steering fluid, and it's a good idea to check and or fill the rear end.

Replace the oil and air filters and go over all of your vacuum lines and check to make sure your choke is working properly.

Lots to do for a basic tune up and sometimes you'd be amazed how much better it'll run.
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Old Aug 7, 2007 | 06:09 PM
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I did all the fluids already, including the rear diif.(believe it or not, a previous owner installed a drain plug in the right place, sure made that easy!).
I also figured a complete tune-up included the points, distributor and rotor.
Thanks for the info. I wasn't really sure if the time factor was that big of deal. Quite frankly, for a 350, it doesn't seem to get really good gas mileage. I hear here on the forum of guys getting 15-18 MPG! Not me. I'd guess 8-10 tops! I had attributed that to probably needing a tune-up.
Guess I'll get to it!
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Old Aug 7, 2007 | 06:12 PM
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up until now, ive been running with 65k mile, 38 year old wires and coil.

i decided it was time to finally replace them. not sure if it runs any better yet since ive only got half the wires replaced so far.
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Old Aug 7, 2007 | 06:22 PM
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My car is original, so I'm curious if I should stick with the AC Delco stuff or get more modern replacements.
Any thoughts on that???
I don't plan on going to an NCRS judging anytime soon...
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Old Aug 7, 2007 | 06:37 PM
  #6  
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Durango_Boy
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From: Columbia Missouri
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Originally Posted by schmegeggie
I hear here on the forum of guys getting 15-18 MPG! Not me. I'd guess 8-10 tops! I had attributed that to probably needing a tune-up.
Guess I'll get to it!

I get right about 10 MPG no matter how I drive. My Grandma could hop in and drive and still only get 10 MPG. Just how it goes unless you take steps to increase the MPG specifically.


Originally Posted by schmegeggie
My car is original, so I'm curious if I should stick with the AC Delco stuff or get more modern replacements.
Any thoughts on that???
I don't plan on going to an NCRS judging anytime soon...

I'm not an original kind of guy so just take this as one man's opinion. If you don't plan of being judged then I would gear anything out of sight towards performance. Plugs, IGN, stuff like that. If you want to still appear stock even though you aren't being judged then anything visible should be as it was from the factory.

On the last hand...if you don't care about keeping it stock at all, then just update everything as you go with performance in mind instead of costly stock replacement parts.
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Old Aug 7, 2007 | 07:29 PM
  #7  
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ddale1977
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Joined: Dec 2006
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From: Keller TX
Default

Originally Posted by Durango_boy
Yes, tunup for sure. Just as there is a mileage requirement there is a time requirement too.

First, don't limit this to just plugs and wires. Check, clean, and or replace the points in your distributor.

Replacing the plugs is done from both top and bottom, using everything from a ratchet with a wobble, wrenches, and stubby wrenches. Use whatever works and remember to go slow.

I would suggest replacing the wires too with a more modern spiral core wire.

Change all your fluids. Flush your coolant system and refill. Change the oil, trans fluid, power steering fluid, and it's a good idea to check and or fill the rear end.

Replace the oil and air filters and go over all of your vacuum lines and check to make sure your choke is working properly.

Lots to do for a basic tune up and sometimes you'd be amazed how much better it'll run.
Might want to also check your timing, weights, springs etc on your distributor.
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