how do you know when to change spark plugs?

[ovechkin83]

i have a 00 sport and so far ive replaced the tires and shocks was wondering when you need to change spark plugs and what does changing them do for the truck thnks

 

[Doomie17]

pretty much change them when u wanna do a tune up along with the wires and air filter.

 

[gijoecam]

The factory called for a 100,000 mile service interval on the plugs and wires. I personally see no reason to do them any more often. At 100k, mine were worn, but still in decent shape.

I'll be doing them again next winter in all likelihood.

-Joe

 

[eXcali]

gijoecam is correct the factory specs say every 100k miles, but I've seen a set last 150k, although I would not advise running that long. Usually most people change them in 80k-100k intervals.

 

[96eb96]

gijoecam is correct the factory specs say every 100k miles, but I've seen a set last 150k, although I would not advise running that long. Usually most people change them in 80k-100k intervals.

The only issue with 100K plat plugs is possible seizure in the head due to rust. Probably 60-80K is perfect.

 

[gijoecam]

The only issue with 100K plat plugs is possible seizure in the head due to rust. Probably 60-80K is perfect.

I can't speak for all engines, but I can speak for mine. After six years and 100,000 miles living in the salt belt, I had nary an issue. The coatings they use on the heads of the plugs do a great job of preventing the galvanic corrosion that used to weld steel plugs into aluminum heads. That type of issue is rare anymore.

-Joe

 

[briwayjones]

The factory called for a 100,000 mile service interval on the plugs and wires. I personally see no reason to do them any more often. At 100k, mine were worn, but still in decent shape.

I'll be doing them again next winter in all likelihood.

-Joe

That's if they are OEM or Iridium plugs. If they are Double Platinum plugs you'll want to change them at about 60,000.

 

[gijoecam]

That's if they are OEM or Iridium plugs. If they are Double Platinum plugs you'll want to change them at about 60,000.

Why?? The OEM plugs are(were) double-platinum...

 

[briwayjones]

Why?? The OEM plugs are(were) double-platinum...

I always heard they were Iridium.

 

[gijoecam]

But why does the electrode material have any bearing on the thread material and sealing surface?

 

[briwayjones]

But why does the electrode material have any bearing on the thread material and sealing surface?

It doesn't, I was commenting specifically on the life span/mileage you can get on spark plugs.

 

[gijoecam]

It doesn't, I was commenting specifically on the life span/mileage you can get on spark plugs.

LOL! I missed the channel change.... Thought I was still talking to 96EB96....

So, why are double-platinum plugs only good for 60K? (I'm almost 100% sure that the stockers were double-platinum)

-Joe

 

[cyress]

How about the NGK Iridium IX plugs...anyone here anything on them. I bought them today and was wondering what you guys all thought?

 

[BrooklynBay]

I once had a no start condition on my 88 after it worked perfectly the night before. Everything checked out OK, so it was a mystery. I replaced the spark plugs, and that's all it was.

 

[cyress]

You changed the Iridium plugs?

 

[BrooklynBay]

I don't know what kind of plugs it had previously. I suspect that they might have been the original plugs. If so, they had under 100K miles on them at the time. This was about 15 years ago. Did they even have iridium plugs back then?

 

[cyress]

LOL....ummmmm nope

 

[gijoecam]

Platinums were just coming onto the scene back then, and IIRC, double-platinums were just coming out as standard on some of the new vehicles.