Spark plugs done 196,000 miles (2007 Expedition)

postwick · Aug 24, 2022

Started getting a bad misfire on cylinder 8. Did all the plugs and coils. Luckily the previous owner (I bought it with 190k miles) had done the plugs, probably on schedule. None of the plugs broke. Here's cylinder 8. Probably had a few more miles in it LOL

Bear in mind I drove 150 miles on 7 cylinders. I know, I know... I didn't really have a choice.

Purrs like a kitten now...

99WhiteC5Coupe · Aug 24, 2022

Anyone old enough to remember the spark plug cleaning machines?

I never cleaned any spark plugs - always replaced them. But I had several friends that would remove and clean them, and reinstall. It’s been a while...........

twodollars · Aug 25, 2022

The little bench top sand blasters? I remember. And used a time or two just to see how well it worked. On old oil burning piles it was a great way to salvage a set.

Trainmaster · Aug 27, 2022

Things burned so rich in the old days, you cleaned them with every points change, well before they were worn out. And if you were burning oil, you cleaned them more often, so you could get the old oil burner to run.

JC Whitney sold the old Aldor spark plugs that would fire in oil if you really had a burner...

Retiredusps · Aug 27, 2022

years ago had one made by champion spark plugs, even had a tester to check how the plug fired after cleaning, probably had a coil inside.had different size rubber adaptors for larger plugs where the grit shot up to do the cleaning. had lots of fun getting some one to put finger in the hole then hit it with the air, also touch where the spark tester was and hit the button and see the persons eyes get very big. I know us guys were son of a guns.

Logan97 · Aug 29, 2022

postwick said:
Started getting a bad misfire on cylinder 8. Did all the plugs and coils. Luckily the previous owner (I bought it with 190k miles) had done the plugs, probably on schedule. None of the plugs broke. Here's cylinder 8. Probably had a few more miles in it LOL

Bear in mind I drove 150 miles on 7 cylinders. I know, I know... I didn't really have a choice.

View attachment 74786

Purrs like a kitten now...

View attachment 74787

Just did mine recently at 206,000 miles, 2 of mine looked just like that. Also glad that previous owner had the spark plug issue fixed while they had it because my local ford was gonna charge me $800 if they had to re thread everything.

Spark plugs done 196,000 miles (2007 Expedition)

postwick

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