When to change plugs?
Thread Starter
Pro
Joined: Jan 2007
Posts: 646
Likes: 17
From: Hendersonville NC
When to change plugs?
Have a 99 with 23k miles and nothing on the car has been changed with the exception of tires-oil-and air filter. Car runs fine but if plugs and wires were replaced would I be able to tell a difference.
Le Mans Master
Joined: Sep 2013
Posts: 8,900
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From: Wisconsin
Race Director
Joined: Mar 2008
Posts: 12,413
Likes: 502
From: Rio Rancho NM
Your wallet will be lighter so that's less weight in the car and you may feel a difference in acceleration,,jk..don't waste your money...It being a 99 with 23k I would be more worried about why you don't drive it more often..
Thread Starter
Pro
Joined: Jan 2007
Posts: 646
Likes: 17
From: Hendersonville NC
It was 12 years old and only 14k on it when I bought it. I have a 71 also and am 68 years old and at that age these cars are not as easy to get in and out of as they were when I was 30. It is still a lot of fun to drive
Drifting
Joined: Jun 2000
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From: Placitas NM
St. Jude Contributor '03 & '04
If they are the original iridium plugs (which it sounds like the are) they are good for 100 miles. My only issue with time and miles on the aluminum block is that the plugs tend to "weld" themselves to the block after that amount of time making it difficult to remove them, not impossible by any means, but just a bitch.
rr
rr
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If they are the original iridium plugs (which it sounds like the are) they are good for 100 miles. My only issue with time and miles on the aluminum block is that the plugs tend to "weld" themselves to the block after that amount of time making it difficult to remove them, not impossible by any means, but just a bitch.
If you want to just see what the plugs look like, pull a couple and check the condition. If nice and clean, I wouldn't worry about them at this point.
Le Mans Master
Joined: Mar 2011
Posts: 6,835
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From: Columbia SC
If they are the original iridium plugs (which it sounds like the are) they are good for 100 miles. My only issue with time and miles on the aluminum block is that the plugs tend to "weld" themselves to the block after that amount of time making it difficult to remove them, not impossible by any means, but just a bitch.
rr
rr
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Joined: May 2001
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From: Western NY
I don't know all of the years of C-5s that were affected, but some of the cars had plugs whose "pucks" on the side electrode would pop off, and wind up who knows where. Because of this situation, I changed out the plugs on my '01 when it had about 4-5,000 miles.