Time for plugs?

[PetroleumJunkie412]

Run em or change em? Currently gapped at 0.058-ish

Also.... I'm not 100% sure they're the right ones... Autolite XP5144.

2011 4.0L

 

[rusty ol ranger]

Regap them and run em'

Its not a high performance engine like a 2.9.

 

[alwaysFlOoReD]

My sunfire has 420,000km on it. I put 50,000 on since i bought it.I changed out the spark plugs. I had never changed them since I bought it. They were iridium plugs. 2 were missing the iridium... It ran pretty good actually. But I am getting slightly better fuel mileage so they lack of the center electrodes must have been doing something

 

[PetroleumJunkie412]

My sunfire has 420,000km on it. I put 50,000 on since i bought it.I changed out the spark plugs. I had never changed them since I bought it. They were iridium plugs. 2 were missing the iridium... It ran pretty good actually. But I am getting slightly better fuel mileage so they lack of the center electrodes must have been doing something

Wtf is a kilometer?

 

[RonD]

I would run them but as said put the gap back at 0.054"
And reverse them, so 1, 2, 3, go to the 4, 5, 6 side and they come over to the 1, 2, 3 side

Waste Spark will wear down those thin centers faster than it will the ends
Or reverse spark plugs wires on coil pack
3 4
2 6
1 5
to
4 3
6 2
5 1

Thats why you should only use regular copper(no coating) or Double Coating
Single coating is a waste of money because one side will wear out faster than the other

Looks like alwaysFlOoReD suffered from that

 

[alwaysFlOoReD]

I would run them but as said put the gap back at 0.054"
And reverse them, so 1, 2, 3, go to the 4, 5, 6 side and they come over to the 1, 2, 3 side

Waste Spark will wear down those thin centers faster than it will the ends
Or reverse spark plugs wires on coil pack
3 4
2 6
1 5
to
4 3
6 2
5 1

Thats why you should only use regular copper(no coating) or Double Coating
Single coating is a waste of money because one side will wear out faster than the other

Looks like alwaysFlOoReD suffered from that

Looks like I didn't catch that... thanks for pointing it out. I do believe I went to copper.

 

[Curious Hound]

Wtf is a kilometer?

That's what happens when your multimeter is set to the "ohms" scale but you use it to check 480VAC.