Just say "When"...
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Joined: Apr 2004
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Just say "When"...
I was talking to a friend the other day and he was up in the air about when to change his spark plugs.
He has a 5.4L and has coil pack problems and feels his plugs may play a role in the packs giving him trouble.
Does anyone think that he may have a point? He put Bosch plat. in his Expedition around 30,000 mi. ago.
I don't want to start a debait on plugs, I personally feel he should have used motorcraft. But at what mileage should one change the plugs out?
I asked the parts store and they say around 35,000, others say 60,000, some say, " wait until ya get slugish response".
Not so sure now...
cobrah
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Joined: May 2004
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Originally Posted by cobrah
I was talking to a friend the other day and he was up in the air about when to change his spark plugs.
He has a 5.4L and has coil pack problems and feels his plugs may play a role in the packs giving him trouble.
Does anyone think that he may have a point? He put Bosch plat. in his Expedition around 30,000 mi. ago.
I don't want to start a debait on plugs, I personally feel he should have used motorcraft. But at what mileage should one change the plugs out?
I asked the parts store and they say around 35,000, others say 60,000, some say, " wait until ya get slugish response".
Not so sure now...
cobrah
If you replace them with Platnium, then 80-100k is ok. If you use standard plugs, then 30k is a about time. Also at any time you feel sluggishness or poor fuel economy, would hurt to swap them out. Plugs are cheap.
Glock
Good info.
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I have been haunting various Ford Expedition boards for almost six years. I have never heard anyone complain about spark plug performance when the replacement plugs were factory Motorcrafts. OTO, I've read more than a few complaints from those who used other plugs, particularly Bosch. Not rock-hard evidence, but just a thought.
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Originally Posted by Glock 19
The manual for a 2003 says the plugs are good for 100k.
If you replace them with Platnium, then 80-100k is ok. If you use standard plugs, then 30k is a about time. Also at any time you feel sluggishness or poor fuel economy, would hurt to swap them out. Plugs are cheap.
Glock
If you replace them with Platnium, then 80-100k is ok. If you use standard plugs, then 30k is a about time. Also at any time you feel sluggishness or poor fuel economy, would hurt to swap them out. Plugs are cheap.
Glock
LATER,
LEE
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Joined: May 2004
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Originally Posted by Lee E Quicksall
PLUGS ARE CHEAP.. YES.. BUT DO YOU KNOW WHAT IT COST TO HAVE THEM CHANGED BY A PRO OR THE DEALER ? I WAS TOLD BY A SERVICE ADVISOR THAT ON MY 04 EXPY 5.4 THAT IT WOULD BE AROUND 400 BUCKS . WHERE ARE THE PLUGS ON THIS ENGINE ANYWAY ?
LATER,
LEE
LATER,
LEE
The really tough ones are in the back of the engine. I believe someone posted the instructions on this board. A search may be useful.
Glock
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