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Old 09-08-2013, 01:17 PM   #161
bile0026
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They made a scary crunching noise when I took them out ... I thought I stripped the threads!

Wasn't that bad actually, by far the easiest spark plug change I have ever done! The car idles much smoother now and I have a lot of power back under 3500RPM. There's a hill that I used to be able to go up in 5th gear that I had to downshift the last year or so. Now it seems to have all of it's power back.

Only concerning thing was the spark plug wells for cylinders 2 and 3 were filled with oil. Blew out a puff of smoke on startup!



Time for a new valve cover gasket! Same thing happened when I changed mine.
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Old 09-08-2013, 06:37 PM   #162
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Wasn't expecting to see the oil on a 36K mile car!

You had the crunching noise too?

All of the oil in the plug wells drained into the cylinders when I removed the plugs. Made quite a puff of blue smoke when starting it up!
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Old 09-08-2013, 06:44 PM   #163
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Wasn't expecting to see the oil on a 36K mile car!

You had the crunching noise too?

All of the oil in the plug wells drained into the cylinders when I removed the plugs. Made quite a puff of blue smoke when starting it up!
No I didn't get crunching but if you have oil in the spark plug wells the gasket is bad and needs to be replaced.
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Old 09-08-2013, 07:12 PM   #164
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I just replaced my autolite xp plugs back to motorcraft iridium's, WAY better. Cleaner/smoother idle. And the idle is even a bit quieter.
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Old 10-20-2013, 07:12 PM   #165
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xp's are junk, stick with a104, a103 or ar103
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Old 12-22-2013, 04:08 PM   #166
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xp's are junk, stick with a104, a103 or ar103
Put in A103's a few months ago, first gear pulls much harder. Just got a tank of premium, all gears rev smoother & faster. Tried premium on stock plugs a while back - nothing!
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Old 12-22-2013, 04:13 PM   #167
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Are you sure it's not just your butt dyno, I mean I know were you're going I have almost the same thing done to my car too LOL!
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Old 12-24-2013, 02:19 AM   #168
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So should i switch out my APP 103s for the A103? I've had the APPs for over a year now.
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Old 12-24-2013, 07:08 AM   #169
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It's up to you but I know that "precious metal"retains heat whereas copper does not. At least that's my understanding.
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Old 01-04-2014, 03:16 AM   #170
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I just switched from the APP 103s to the A103s. As said, much more smoother idle and even in gear.
My focus used to run weird in the cold but after i put these on, it's gotten much better. Have no idea if changing the spark plugs fixed it but hey, it's fixed anyhow lol.
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