Spark Plug Replacement Question
Thread Starter
Safety Car
Joined: Feb 2000
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From: MANDEVILLE, LA La
Spark Plug Replacement Question
I was thinking....Not Good,,,,
Anyone experience problems with removing their spark plugs after many years of service.For instance..My 96' only has 40K Mi. on it but it's 14 years old.Do you think the spark plugs could sieze in the heads after all these years causing removal problems especially if I waite till 100K Mi. before I change them.?
What's your opinion / experience on this.
Thanx
Anyone experience problems with removing their spark plugs after many years of service.For instance..My 96' only has 40K Mi. on it but it's 14 years old.Do you think the spark plugs could sieze in the heads after all these years causing removal problems especially if I waite till 100K Mi. before I change them.?
What's your opinion / experience on this.
Thanx
Drifting
Joined: Dec 2003
Posts: 1,491
Likes: 94
From: Westfield MA
my view, which is not based on anything scientific, is to change the plugs soon after I get a car. I don't know how long that they have been in there or if the person before me used never seeze on them. They CAN strip out the threads in the heads, it isn't that common, but the sooner you get them out and new ones with anti-seeze on them, the better your odds of not having a problem.
Again, just my view.................
Again, just my view.................
Max G’s
Joined: Nov 2008
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From: Monroe OH
NCM Sinkhole Donor
If you suspect they're siezed up. Start up the car and let run for a couple of minutes so that the heads start to warm a little, but not too hot to where you cannot get close and remove the plugs. The aluminum head material will expand quicker than the steel material the plugs threads are made of so you should be able to remove them. If the car runs good now, I would just pull a couple of the plugs and check condition and replace if necessary. 
Instructor
Joined: Nov 2008
Posts: 199
Likes: 1
From: Asheboro NC
I was thinking....Not Good,,,,
Anyone experience problems with removing their spark plugs after many years of service.For instance..My 96' only has 40K Mi. on it but it's 14 years old.Do you think the spark plugs could sieze in the heads after all these years causing removal problems especially if I waite till 100K Mi. before I change them.?
What's your opinion / experience on this.
Thanx
Anyone experience problems with removing their spark plugs after many years of service.For instance..My 96' only has 40K Mi. on it but it's 14 years old.Do you think the spark plugs could sieze in the heads after all these years causing removal problems especially if I waite till 100K Mi. before I change them.?
What's your opinion / experience on this.
Thanx
Team Owner
Joined: Oct 2000
Posts: 96,443
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From: Fort Knox, KY
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If you suspect they're siezed up. Start up the car and let run for a couple of minutes so that the heads start to warm a little, but not too hot to where you cannot get close and remove the plugs. The aluminum head material will expand quicker than the steel material the plugs threads are made of so you should be able to remove them. If the car runs good now, I would just pull a couple of the plugs and check condition and replace if necessary.
On that note, definitely inspect the No. 2. plug on the passenger side of the car next to the firewall. If the previous owner/mech. balked at changing ANY plug, it'd be that one. (Yup, it's that big a ****!)
If that one's in good shape (and they're non-AC/Delco platinum) you might be good to go on achieving the maximum service life of 100,000 miles.
Drifting
Joined: Aug 2009
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I ran into a similar situation on a different car. The plugs had been in for over 100k miles (aluminum head). They did not want to come out. I feared I was going to snap a plug or strip the threads in the head. It might scare some people, but I ended up using an impact wrench on a low setting and they came right out with ease. This was a 4cyl motor though and the plugs were easy to access. Don't forget a little anti seize goes a long way.
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Safety Car
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I ran into a similar situation on a different car. The plugs had been in for over 100k miles (aluminum head). They did not want to come out. I feared I was going to snap a plug or strip the threads in the head. It might scare some people, but I ended up using an impact wrench on a low setting and they came right out with ease. This was a 4cyl motor though and the plugs were easy to access. Don't forget a little anti seize goes a long way.
Thread Starter
Safety Car
Joined: Feb 2000
Posts: 3,771
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From: MANDEVILLE, LA La
Just ordered a set of NGK G-Power Plugs from Amazon/Auto Parts 123
for a total of $25.85 Shipped. Will install with a little Never Sieze.
http://www.streetmachineclub.com/Pro...rms=fire+power
http://www.ngk-sparkplugs.jp/english...wer/index.html
for a total of $25.85 Shipped. Will install with a little Never Sieze.
http://www.streetmachineclub.com/Pro...rms=fire+power
http://www.ngk-sparkplugs.jp/english...wer/index.html
Last edited by CAJUN C4; Apr 9, 2010 at 05:56 PM.
Safety Car
Joined: Sep 2000
Posts: 3,524
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From: Hinckley Ohio
I was thinking....Not Good,,,,
Anyone experience problems with removing their spark plugs after many years of service.For instance..My 96' only has 40K Mi. on it but it's 14 years old.Do you think the spark plugs could sieze in the heads after all these years causing removal problems especially if I waite till 100K Mi. before I change them.?
What's your opinion / experience on this.
Thanx
Anyone experience problems with removing their spark plugs after many years of service.For instance..My 96' only has 40K Mi. on it but it's 14 years old.Do you think the spark plugs could sieze in the heads after all these years causing removal problems especially if I waite till 100K Mi. before I change them.?
What's your opinion / experience on this.
Thanx
The reason is that the OEM LT4 plugs are notorious for the little hockey pucks falling off resulting in too large a gap....stressing everything including the opti
I changed mine at about 25k miles and about half of the plugs had the pucks missing..
I doubt you will find the plugs siezed...just change them with the engine cold ( I think that is better?)
Let us know about your pucks.....hasn't been a topic on the forum for many years now....good to occasionally resurrect old topics
Last edited by LT4BUD; Apr 9, 2010 at 07:42 AM.
Safety Car
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I would change these plugs even tho they were rated for 100,000 miles.
The reason is that the OEM LT4 plugs are notorious for the little hockey pucks falling off resulting in too large a gap....stressing everything including the opti
I changed mine at about 25k miles and about half of the plugs had the pucks missing..
I doubt you will find the plugs siezed...just change them with the engine cold ( I think that is better?)
Let us know about your pucks.....hasn't been a topic on the forum for many years now....good to occasionally reurrect old topics
The reason is that the OEM LT4 plugs are notorious for the little hockey pucks falling off resulting in too large a gap....stressing everything including the opti
I changed mine at about 25k miles and about half of the plugs had the pucks missing..
I doubt you will find the plugs siezed...just change them with the engine cold ( I think that is better?)
Let us know about your pucks.....hasn't been a topic on the forum for many years now....good to occasionally reurrect old topics
Team Owner
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From: Fort Knox, KY
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Thread Starter
Safety Car
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From: MANDEVILLE, LA La
http://www.streetmachineclub.com/Pro...rms=fire+power
And they are only $2.60 ea.
Team Owner
Joined: Oct 2000
Posts: 96,443
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From: Fort Knox, KY
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Check this out...NGK G-Power....4.7 HP Gain
http://www.streetmachineclub.com/Pro...rms=fire+power
And they are only $2.60 ea.
http://www.streetmachineclub.com/Pro...rms=fire+power
And they are only $2.60 ea.
Damn respectable, I'd day. Especially when you consider the NGK iridiums are like $15 bones a pop.
Thread Starter
Safety Car
Joined: Feb 2000
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From: MANDEVILLE, LA La
Le Mans Master
Joined: Feb 2006
Posts: 8,753
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From: Louisiana
Dennis, I purchased a set of NGK TR-55 plugs for about $17 and Taylor spiro pro 8mm wires for $61 to go on my 95. From the looks of it...it's going to be an all day job. But, I'm going to clean the suspension and anything I can reach while I'm in there. The car has the factory plugs and and wires with 54K miles on them. Starting to get a hot idle miss and stumbling on hard acceleration. Figure it's time to swap the parts out and see what else I find while I'm there. Good luck.
Instructor
Joined: Mar 2008
Posts: 119
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From: Albuquerque NM
Ngk
hey, where did you guys find those plugs for $2.60? I'm finding them on Amazon for about $5 at the moment. I'm getting ready to do plugs and wires on my LT4 so I can't use the TR55s but if I could find out where you got those so cheap maybe I could find the ones I need a little cheaper too. Also, what wires would you recommend. I'm on a stock setup and I don't plan on going crazy with mods anytime soon.
sorry if I'm thread-jacking ya a little.
sorry if I'm thread-jacking ya a little.
Thread Starter
Safety Car
Joined: Feb 2000
Posts: 3,771
Likes: 0
From: MANDEVILLE, LA La
Just ordered a set of NGK G-Power Plugs from Amazon/Auto Parts 123
for a total of $25.85 Shipped. Will install with a little Never Sieze.
http://www.streetmachineclub.com/Pro...rms=fire+power
http://www.ngk-sparkplugs.jp/english...wer/index.html
for a total of $25.85 Shipped. Will install with a little Never Sieze.
http://www.streetmachineclub.com/Pro...rms=fire+power
http://www.ngk-sparkplugs.jp/english...wer/index.html
Hope this helps
Last edited by CAJUN C4; May 15, 2010 at 11:51 AM.