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Old 08-30-2011, 14:51   #1 (permalink)
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98 5.4L - E350 sparkplugs

I have a chance to buy a pretty nice Club Wagon from the apt. complex where I live. It only has 47K on it and hasn't been used much for the past year. I planned on pulling the plugs to check their condition and to check compression as I'd like to pull a small TT next year. I've read about the problems with the 5.4L sparkplugs and wonder what would be recommended on this low-mileage but 13-year old van. Leave the plugs alone or remove them and apply anti-sieze to avoid trouble in the future?

Bert?
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Old 08-30-2011, 21:12   #2 (permalink)
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Re: 98 5.4L - E350 sparkplugs

The tough ones were 2003 and up. The 98 weren't a problem as long as they were torqued properly when installed. To tight and when the aluminum cylinder head expands, they pull the threads.

Most of the time they can be run over 100,000 miles but I'd change them around 70,000.
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Old 08-30-2011, 21:14   #3 (permalink)
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Re: 98 5.4L - E350 sparkplugs

Check this. Home
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Old 08-30-2011, 21:46   #4 (permalink)
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Re: 98 5.4L - E350 sparkplugs

Now that's a well-used van! It'd probably take me a while to gather that many miles.

So as long as I torque the plugs properly, I'd probably be alright? If one ever pops, how tough is the access to do an insert on these vans?

Also...what do you think of mounting a small cycle on the front of an E350? They have front-mount hitches available and I'll use an aluminum cargo carrier to haul a Honda 90cc trail bike that weighs 190lbs. Total extra weight will probably be 220lbs.or so.
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Old 08-30-2011, 22:30   #5 (permalink)
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Re: 98 5.4L - E350 sparkplugs

I wouldn't worry about the inserts as long as they get torqued properly.

That weight would be nothing for it. They mount class C motorhome bodies to them and that's a lot more weight.
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Old 09-01-2011, 19:06   #6 (permalink)
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Re: 98 5.4L - E350 sparkplugs

13 years old, Id replace the plugs for better piece of mind regardless of the mileage. I'd also give the transmission a service as well. I'd also change out the rear axle fluid, or at the very least check the level and colour before you tow with it.
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