Ricklee4570

I keep reading in other forums about the 2.7's needing the spark plugs changed around 20,000 miles. The reasoning is that the little v-6 with turbos is producing a lot of compression and that is hard on spark plugs. Just curious if anyone has changed theirs yet and how did they look?

idrive

iTrader: (3)

Pull one or two although you're most likely wasting your time.

I'd be more than surprised if they needed changed as they are rated to go 100K miles.

Generally speaking you'd know if they need replace by a drop in mileage and a rougher running engine.

jordan15screw

jjandascog

"bonjour"

02fx4dude

I checked my plugs at 21k miles. every one looked good and gap was at 0.029".

Napalm

If you are tuned - and you are running closer to lean as opposed to a tick over rich - and you dialed up boost pressure then sure it's going to erode the plugs faster. I hear this is more of an epidemic on the 3.5L ecoboost but I see alot more people tuning those harder also.

stock for stock you should easily go 50K if not more miles before worrying about spark plugs. aside from all that if you are someone that runs the engine hard you would also wear them down a bit quicker. However older ecoboost engines used base platinum plugs which are a bit soft - today's factory plug uses a iridium/platinum alloy mix electrode which stands up to wear a bit better.

So that's another factory. However - like all things there are instances of bad parts installed and that causes people to early replace plugs too. somewhere on here there's a thread of a guy that pulled cracked plugs out of his 2018 ecoboost.

JDwornik

I'm doing mine every 40k. So will be doing mine as soon as I get my truck back from the dealer.

Brettlil17

BareBonesXL

It's not common but it is perfectly reasonable to regap your plugs, if they still have life left in them. The gap grows, that's why they start to miss when they get a lot of miles on them. Assuming that they stay clean.