Jake's Dad

I am going to bite the bullet and try to resolve my shuddering at idle,
and shuddering at 50-55 MPH by installing new iridium plugs. Yeah, I know, I have a "warranty" but after 3 dealerships telling me it was normal running behavior I am conceding. But I need
some help from y'all. I drive a 2013 XLT 5.0.


1). What is the model of the NGK Iridiums I need? I can't find anything
out there.


2). Being iridium plugs, can I gap them?


3). Is a wire gap tool best?


4). What is the proper gap for a 5.0?


5). Do I have easy access to all the plugs? My 2001 5.4 was not easy for
me as I had to remove fuel lines, etc - so I had my mechanic do it.
Appreciate your help.


JD

bigred90gt

I'd like some info on this as well.

Jake's Dad

Glad I'm not the only one!

camino70

Definitely not the only one. I tried searching, but didn't come up with anything.

If you're near Atlanta, I'd be interested in helping.

Stage3Motorsports

I did some searching for my truck and to list some 5.0L Spark plugs on our site and didn't come up with anything. Ford says the factory plugs are good to 100K. So maybe we should look at stock plugs with a consistent gap. I would image that would be around 030-032 gap, but maybe someone else knows without guessing.

MGD

https://www.f150forum.com/f70/5-0-sp...ug-gap-212440/

Stay stock - Iridiums will not solve this.

good luck

Jake's Dad

The stockers look like Iridiums....at least in that post.

Jake's Dad

Yup.

http://www.oreillyauto.com/site/c/de...3435&ppt=C0334

CollinM

Very easy to get to them. Wire gap tool is the best. Not sure on gap or part numbers

benchwarmer4203

After reading through the thread that MGD linked, it looks like your next step should be to check the gap on your existing plugs.