Problem with new to us 2015

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MO311FAN

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So one of my neighbors owns a Midas in town, he ran a scan and it showed a misfire on cylinder 1. I called the dealership we bought the Expy from and told them what was going on, they told me to bring it in. After about 45-1hr, they came and told me it was fixed, “it was a spark plug.” Couldn’t really ask exactly what the problem was because I was dealing with our sales lady.

Drove to a Cajun restaurant 30mi away for my birthday dinner tonight. Have run her at many different speeds, acceleration levels, no problems.

Keeping my fingers crossed that was our stroke of bad luck.

Kudos to Bob McCosh dealership for taking a “as is” vehicle in and offering to fix whatever it may have been.
 

99WhiteC5Coupe

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So one of my neighbors owns a Midas in town, he ran a scan and it showed a misfire on cylinder 1. I called the dealership we bought the Expy from and told them what was going on, they told me to bring it in. After about 45-1hr, they came and told me it was fixed, “it was a spark plug.” Couldn’t really ask exactly what the problem was because I was dealing with our sales lady.

Drove to a Cajun restaurant 30mi away for my birthday dinner tonight. Have run her at many different speeds, acceleration levels, no problems.

Keeping my fingers crossed that was our stroke of bad luck.

Kudos to Bob McCosh dealership for taking a “as is” vehicle in and offering to fix whatever it may have been.


I changed the original spark plugs on my 2015 Expedition Limited at about 45,*** miles. I use top tier fuel, do not tow (although I have the HD tow package), and most of my driving is on rural state routes. I used the OEM Motorcraft plugs.

The original spark plugs were very black, with the gap opened up. They looked like they had 150,000 miles on them.

I will probably change the spark plugs again at 75,*** miles - it was somewhat easy, and I fear the Ecoboost engine eats spark plugs. I can’t believe Ford recommends a change interval of 100,000 miles - which could also include towing.
 
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MO311FAN

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so I just got back from KC (it was a trip for all the guys). No problems at all, she drives like a dream. Really happy to have this rig!

And when I got home we found that she fits in the garage!
 

John D

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I had a cylinder 6 misfire with exact same symptoms as you and about 30k on motorcraft plugs. I did all 6 plugs, but #6 had a crack in the porcelain.
 
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