Spark Plugs

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May 28, 2019 | 04:30 AM

msasteeler

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Spark Plugs

How many spark plugs do i need for my 2012 F350 6.2ltr engine?

May 28, 2019 | 05:12 AM

don123

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From: Massachusetts

16 spark plugs

May 28, 2019 | 06:49 AM

Chuck's First Ford

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From: very South Texas

Quote:

Originally Posted by don123

16 spark plugs

yep.

8 on top, coil over spark plug
8 under the exhaust manifolds. follow the spark plug wires.

and DO NOT go the cheap spark plug route..
my opinion.

May 29, 2019 | 02:50 AM

msasteeler

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Spark Plugs

Many thanks for the info on How many plugs to replace in my Ford 6.2ltr.

May 30, 2019 | 11:31 AM

geekwithoutacause

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Quote:

Originally Posted by Chuck's First Ford

yep.

8 on top, coil over spark plug
8 under the exhaust manifolds. follow the spark plug wires.

and DO NOT go the cheap spark plug route..
my opinion.

How hard is it to replace the plugs under the manifold? Can't even see them from the top.

May 30, 2019 | 11:57 AM

don123

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From: Massachusetts

I just changed mine. They all came out easily and threaded back in easy. The ones on top are easy to access. If you have wheel well liners remove them. It makes getting to the bottom plugs a lot easier. Took me about 2 hours to complete the job. It’s simple!

May 30, 2019 | 12:02 PM

don123

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From: Massachusetts

Looks like Ford used copper plugs on top. Bottom plugs had the fine wire tips.

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May 30, 2019 | 01:21 PM

don123

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Joined: May 2006

Posts: 1,047

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From: Massachusetts

I changed mine at 47k miles. Plugs really weren’t in horrible shape. Top plugs were the worse gap wise but not too bad. No difference in gas mileage or acceleration with the new plugs.

May 30, 2019 | 07:35 PM

#10

irocdupi

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Joined: Feb 2010

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Same with my plugs, 35k miles on mine. 2k hours on them. Top plugs were in worse shape then the bottoms. I changed the top and bottoms to Motocraft Double Platinum. Wheel well liners removed to get the lower plugs