when to change plugs ??

[pastor scott.com]

I know my 5.3 o4 burb can go for 100,000 miles before the plugs need to be changed. My concern is , will those plugs ever come out by then without taken out the threads ? Whats your guys take ? 20,30,40 thousand. I have 27000 right now, should I wait or even pull them and never sease them and put them back in ?

 

 

Scott

[01z71]

I changed mine at 50k. I just figured I'd cut the recommendation in half. THey came out fine and still looked good for another 50k at least.

[pastor scott.com]

2 questions:

 

1 what plugs did you use ?

2 How hard were they to get to and get out ?

 

thanks

 

Scott

[RyanZ71]

I think 75,000 miles is a good time to change out the original plats. I too would not go till 100k on 1 set of plugs. When I changed mine at 80k they were well worn.

[Nappers]

I changed my Iridiums in my '00 Yukon, 5.3 at 98,000 miles and they came out fine, change the passenger right plug first then the rest are easy and you won't end on a frustrating exit

 

I used AC Delco Iridiums and OEM wires and purrs like a kitten.

 

Aaron

[01z71]

I used the same AC Delco Platinum plugs it came with. I figured they worked well enough so I went with them. Passenger side back plug was the hardest. But it's an easy job to do. Just make sure to put a little anti-seize on the threads.

[koffey]

I used the same AC Delco Platinum plugs it came with.  I figured they worked well enough so I went with them.  Passenger side back plug was the hardest.  But it's an easy job to do.  Just make sure to put a little anti-seize on the threads.

 

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Just replaced mine a week ago with new ac plats, 125,000kms. I was always told that you, with a new GM auto, never have to replace the plugs, ect... I have also heard the horror stories of people changing the plugs out well after +100,000miles and breaking the plug off in the alumimum head. That = $$$$.

[J45p3r]

Just did my fathers in his 2004 4.8L w/80000 miles. Came out easy as pie and the plugs looked great. They could have easily gone to 100k. Apparently 2004 motors use iridium plugs.

[lrymal]

...Just replaced mine a week ago with new ac plats, 125,000kms.  I was always told that you, with a new GM auto, never have to replace the plugs, ect...  I have also heard the horror stories of people changing the plugs out well after +100,000miles and breaking the plug off in the alumimum head.  That = $$$$.

 

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At 100,000 miles (160,934km), the plugs should come out easily. Horror stories are due to poor practices on removing the plug---crooked socket. If the motor has really been dogged, such as with salt splash-up chronically on the engine block, with no cleaning ever done on the motor, then one should exercise a little common-sense on the plug removal. More than likely, enough salt water from the road has migrated down one thread into the plug socket. This could cause an issue, not only at 100,000 miles, but 50,000 miles.

 

So, just get some WD-40, or Liquid Wrench, and the night before, spray the plug area and let the WD-40 or Wrench migrate into the threads overnight.

 

Been putting the factory plugs to the limit for decades and have never had problems.

[03blackburb]

The original plugs whould have been installed using a anit-sieze compound on the threads and grease on the boots, so going 100K should not be any problem. When you change them out, remeber to use a good aiti seize compund onthe treads and also boot grease in th eplug boots. Don't bother using anything but AC Delco plugs.

[pm26]

The original plugs whould have been installed using a anit-sieze compound on the threads and grease on the boots, so going 100K should not be any problem.  When you change them out, remeber to use a good aiti seize compund onthe treads and also boot grease in th eplug boots.  Don't bother using anything but AC Delco plugs.

 

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The key phrase here is "should have been installed". i would recommend changing the OEM plugs every 60k miles.

[Impalacat]

On my 2000, I changed them at 67,000, and they came out fine, even had never sieze from the factory, they where in good shape and could have gone 100,000 easy, I put in AC Iridiums and new plug wires, have 90,000 now.

[Elwood 2000]

I changed my factory plugs out at around 95k. They looked great, came out very easy and actually, I think they would have operated just fine for quite a while longer.

 

I do agree, use never-seize on the new threads and grease on the boots. I changed my plug wires when I change my plugs as well.

[Loomis462]

161K on the original plugs in my 99 burb, runs great.

[cokesda1]

111K on the original plugs in my 2000 Silverado, runs perfect.