Code P301. 1 cylinder misfire?

[painterpatt]

This code came up twice this weekend after fairly hard acceleration. One passing, once getting on freeway. I have been able to feel like a "stutter" lately around 3k rpm. (My dyno graph showed it). Way worse now and finally a light flashing. (Went off). Any where to start? 36,500k 11 Flex 

 

[BiGMaC]

I'd check plugs first.  If you can identify a cylinder with your equipment and switch plugs between cylinders.… or can change all the plugs.. to see if it resolve.

Coils could be a problem too i suppose.

A similar issue was discussed on another thread and ultimately proved to be an injector that was failing.

 

[painterpatt]

Ngk's on order yesterday lol.

 

[curry67]

I had same problem switched out to new plugs. Its non existant now. I dont think ford knew how these direct injections acted on the original plugs.

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[painterpatt]

Well swapped plugs out and look what i found at #1 And all the gaps were around .040 

 

[SHOdded]

Whoa, what the heck happened here?  Never seen this before.  Glad you got 'em swapped out.

 

[painterpatt]

the ceramic broke loose, it moves up and down if you shake the plug lol. Found this to, http://www.autoserviceprofessional.com/article/92953/ford-gtdi-runs-rough

 

[SHOdded]

Must be part of the reason they changed the plugs used for OEM builds.  Good find!

 

[glock-coma]

the ceramic broke loose, it moves up and down if you shake the plug lol. Found this to, http://www.autoserviceprofessional.com/article/92953/ford-gtdi-runs-rough

Its a good thing you caught that early.
If a piece of the ceramic broke off and went into the cylinder that could have been very bad.

 

[BiGMaC]

Glad you found this... A real disaster waiting to happen!

 

[DJE624]

Ouch Pat!  Glad you found it sooner than later! 

 

[crash712us]

It is when known problem with earlier plugs.


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[IHeartGroceries]

Dang. That's lucky.

I've seen this quite a few times before. Denso plugs in particular were letting loose the ceramic insulators, but they chipped or shattered and dropped into the cylinder. I think we all know what happened from there. Lol!
At least your remained intact!

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[painterpatt]

Yep, very lucky. It seems to run a little better too. Freaked out ALOT of the younger Tampa import scene at track last nite. Local 1/8th mi track. First up was against a BMW 335, no clue what he did but I ran 8.7 he ran a 13.3. haha. I guess a kid i work with was by staging and when I rolled up they were laughin about some idiot in the grocery getter gonna get his ass kicked by a Bmer. raced him 3 times, he went dark board on last 2 but still not even close. Took out a 10 Mustang GT twice and a few healthy Hondas.

 

[BiGMaC]

Yep, very lucky. It seems to run a little better too. Freaked out ALOT of the younger Tampa import scene at track last nite. Local 1/8th mi track. First up was against a BMW 335, no clue what he did but I ran 8.7 he ran a 13.3. haha. I guess a kid i work with was by staging and when I rolled up they were laughin about some idiot in the grocery getter gonna get his ass kicked by a Bmer. raced him 3 times, he went dark board on last 2 but still not even close. Took out a 10 Mustang GT twice and a few healthy Hondas.

Way to go Pat!... Great kill!  ;D   
The joys of owning a sleeper... it sandbags for you... make the wins sweeter!  :dance2:
... and that expert kid...  :black_eye: LOL

 

[DJE624]

Good going Pat!

 

[painterpatt]

They took a pic soon as I see it I'll post it

 

[BiGMaC]

They took a pic soon as I see it I'll post it

.......  opcorn: