Spark plugs
Thread Starter
. . .
Joined: Nov 2022
Posts: 7
Likes: 4
From: CO
Spark plugs
What’s the word about changing spark plugs after 30k on the 3.5EB? I’ve heard from a few people I need to change the sparkys. I’ve got 52k on the ‘19 f150 and 37k on the 18’ex sport.
let me know your thoughts, opinions, facts…
let me know your thoughts, opinions, facts…
has left the building
Joined: Jan 2020
Posts: 9,647
Likes: 3,421
It's a bit early but if it makes you happy.
I bought a used vehicle, I changed plugs 6 months after I got it, which was about 64,000. They looked nearly new.
It's not a bad time to start thinking about changing them on your '19 with 52. Since you are in Colorado, I don't see a need to do it in the winter months.
I bought a used vehicle, I changed plugs 6 months after I got it, which was about 64,000. They looked nearly new.
It's not a bad time to start thinking about changing them on your '19 with 52. Since you are in Colorado, I don't see a need to do it in the winter months.
Every tuner ive ever talked to recommended changing them around the 30-40k mark even when stock. Plenty of posts on here of issues before 60k that were resolved by plugs.
Its the same as the oil change debate, differential fluid debate and so forth....its your truck, if you want to wait 100k to change them then you can. The 13th gen 3.5 is the easiest vehicle ive ever changed plugs on...took me about 35 minutes and $45...ill keep doing it around 35k, change my oil at 5k, and i ran a heavier weight oil in my rear diff based on a lot of other peoples recommendation.
in the house
Joined: Jul 2010
Posts: 5,140
Likes: 1,978
From: Kansas
30K is what most people do, or even more frequently if 'carbon tracking' is noted, along with the associated decline in performance. Owner's Manual says 100,000 miles...
Last edited by bajaman; Dec 29, 2022 at 06:58 AM.
Trending Topics
Senior Member
Joined: Feb 2017
Posts: 1,041
Likes: 750
From: Northern Michigan
2019 2.7. Regular use. I changed at 50,000.
The old plugs looked like new and the gap was a shade tighter than the new ones, honest. I could not tell a difference between any one of the old ones.
I did check the gap of the new ones.
The old plugs looked like new and the gap was a shade tighter than the new ones, honest. I could not tell a difference between any one of the old ones.
I did check the gap of the new ones.
your gap was tighter? I’ve never seen spark plug gaps decrease with time and wear, only the gap increase…
5 Year Member
Joined: Feb 2020
Posts: 4,119
Likes: 2,261
Me neither. My guess, the originals were put in way too tight of gap, and naturally not checked. I am starting to really question QC in many areas of life and products.