Spark Plug lifespan

[ARC]

Hello guys.
56k on my 2022 and wondering when I need to change the plugs.
Been running a tune on it since 15k.
Seems to run fine just looking to do preventive maintenance.
Thanks,

 

[Cdubya]

Do it. Spark plugs may be fine but gap widens. It's kind of a pain so just put in new plugs.

 

[ARC]

Do it. Spark plugs may be fine but gap widens. It's kind of a pain so just put in new plugs.

Ok, but after looking at the space I'm paying someone to do it!
At 48 I'm done with the young guy work.

 

[UNBROKEN]

It takes about an hour…not hard at all. A little tedious but not hard. As for lifespan…30-30k if tuned. They eat plugs like candy. Go a gear range colder gapped at .028. The NGK Ruthenium’s are the smoothest I’ve ran so far.

 

[ARC]

It takes about an hour…not hard at all. A little tedious but not hard. As for lifespan…30-30k if tuned. They eat plugs like candy. Go a gear range colder gapped at .028. The NGK Ruthenium’s are the smoothest I’ve ran so far.

I was going to just go with the OEM motorcraft again. I run E50 daily. I havent had any problems with the motorcraft plugs, and im at 55k now. Original set and tuned for the past 40k. Maybe ask the tuner if the gap should be smaller than the stock.

 

[BrooseDaMoose]

I was going to just go with the OEM motorcraft again. I run E50 daily. I havent had any problems with the motorcraft plugs, and im at 55k now. Original set and tuned for the past 40k. Maybe ask the tuner if the gap should be smaller than the stock.

My tuner (ZFG) recommends a range colder and 0.28 as stated above. You should check with your tuner.


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[ARC]

My tuner (ZFG) recommends a range colder and 0.28 as stated above. You should check with your tuner.


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I hear you, but running the stock plugs on a E50 tune for the last 30k and runs good. Which makes me question the one step colder. Spacing I understand and will look into.

 

[BrooseDaMoose]

I hear you, but running the stock plugs on a E50 tune for the last 30k and runs good. Which makes me question the one step colder. Spacing I understand and will look into.

Running E50, increased timing and increased boost pressure all increase the temperature in the combustion chamber. A hot plug can cause predetonation and faster deterioration of the plug itself. Going a step colder isn't a noticeable change unless you're looking at datalogs. You engine will run good with the stock plugs but, it will run better with a colder plug. The best way to decide is to monitor your plugs. The old saying is, "One step colder for every 75-100Hp added". Also, it depends on how you drive. If your engine lives in the upper RPM range (spirited driving) a colder plug will be better. If your engine rarely sees the upper RPM range then stock plugs will be fine.

 

[Cdubya]

I hear you, but running the stock plugs on a E50 tune for the last 30k and runs good. Which makes me question the one step colder. Spacing I understand and will look into.

Gap will enlarge with age. I think you are due for a plug change with the stock Iridiums.