2014 engine missing

[Sooner89]

I have a 2014 raptor with 169,000 mile never had a problem. Replaced spark plugs at 160,000 miles. Today sitting at a stoplight first thing in the morning the engine started missing. I thought I just got a bad slug of gas, so I drove it to a Shell station and filled the tank. After 30 minutes engine still missing. Drove to Oreilys to check codes. Codes came back as cylinder 7 and 8 bad ignition. I have order 2 new coils and a full set of plug wires. What else should I look into?

Thanks in advance

 

[raisins]

I think that's a good start. Coil packs, new plugs (make sure they are correctly gapped) and new plug wires.

 

[Sernas]

Broken valve spring?

 

[500mag]

Where did it go?

 

[Sooner89]

Update..
Broken valve springs on cylinder 8. At the shop should be fixed by Thursday. Compression still good. Let's see on Thursday.

 

[Shinocu]

you have 170K on a 14?

 

[Swacer]

you have 170K on a 14?

I was thinking the same thing. Got a '14 with 52k and its my daily driver. lol

 

[MEIRONMAN207]

Wow...I have that kinda mileage on my ‘04...and that is driving up and back the East Coast several times a year.

 

[Sooner89]

Well I got my Raptor back on Friday. Cost $950. Mechanic says the rest of the engine looks good. Yes, I have 170,000, I live in a Houston suburb and drive close to 150 miles every day. My truck has always had royal purple oil and k&n oil filters. I keep it very well mantained and plan on driving it for another 100,000 miles.

Why is it always the #8 spring that breaks? At least the is the one that others have posted that broke.

Thanks

 

[Shinocu]

its awesome to hear the motors last. as long as you take care of it.