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Old March 26th, 2009, 08:33 PM   #1
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Default 99 f250 super duty spark plugs

Where are they? lol I looked but don't see anything. I don't wanna start taking something apart and mess something up.

Thanks for any and all help!
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Old March 26th, 2009, 08:33 PM   #2
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Which motor? I do believe the 5.4 and v-10 are coil on plug.
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Old March 26th, 2009, 08:34 PM   #3
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Which motor? I do believe the 5.4 and v-10 are coil on plug.
5.4 I forgot to add that in there.
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Old March 26th, 2009, 08:35 PM   #4
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the 5.4 and v10 are coil on plug, you have to remove the coil, unplug it and remove the 8mm bolt, and then pull it out of the head and theres your plug
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Old March 26th, 2009, 08:36 PM   #5
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the 5.4 and v10 are coil on plug, you have to remove the coil, unplug it and remove the 8mm bolt, and then pull it out of the head and theres your plug

Thanks!
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Old March 26th, 2009, 08:39 PM   #6
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Just watch out for the passanger side plug all the way in the back, think its cyl #7, sometimes the coolant hose above it leaks and the top of the plug can get corroded. Make sure to blow out the holes with air before taking them out
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Old March 26th, 2009, 08:45 PM   #7
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Just watch out for the passanger side plug all the way in the back, think its cyl #7, sometimes the coolant hose above it leaks and the top of the plug can get corroded. Make sure to blow out the holes with air before taking them out

Thanks for the info and help. I'll be doing this tomorrow after work.
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Old March 26th, 2009, 08:46 PM   #8
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Thanks for the info and help. I'll be doing this tomorrow after work.


Not a problem
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Old March 26th, 2009, 09:29 PM   #9
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I know some ford you have to take the fuel rail off to get to the plugs, not sure on the 250 though
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Old March 26th, 2009, 09:30 PM   #10
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You can get them out without having to take the fuel rail out on the 250
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Old March 26th, 2009, 09:40 PM   #11
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You're going to have some fuuuun with this job!
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Old March 26th, 2009, 09:44 PM   #12
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You're going to have some fuuuun with this job!
There not to bad, usually take me about an hour to do them if all goes well. Lucky ford now offers a thread insert kit for the heads if the plug pulls out the threads with it or if the plug blows out of the head
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Old March 26th, 2009, 09:45 PM   #13
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its really fun to do on the v10s
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Old March 26th, 2009, 09:46 PM   #14
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k
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Old March 26th, 2009, 09:46 PM   #15
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ya i had to do 2 motor swaps with the v10 in a van and loved every minute of it.
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Old March 26th, 2009, 09:46 PM   #16
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Yeah getting to the cylinders in the back are fun stuff!
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Old March 31st, 2009, 02:53 PM   #17
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i've seen on a F150 wth the 5.4 that the damn plug blew clean out of the cylinder head. yea i was not gonna take on fixing that pile.
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Old April 4th, 2009, 01:03 AM   #18
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its really fun to do on the v10s
My 99 V10 is on orig plugs 97,xxx still perfect so far
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Old May 1st, 2009, 11:40 AM   #19
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TY for this thread. I am basically a backyard mechanic, but I like to know ahead of time what I am in store for when I go to tackle a job ........04 5.4 SD here I come

btw....cheapest quote I found was $300 for a plug change on my SD. F that.
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Old May 1st, 2009, 12:12 PM   #20
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a real SD wouldn't have this issue
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