FordExcursions.com Forums
trauski
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• indianapolis, IN, USA |
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• Registered on 3/10/2003 |
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• 44 posts |
• 1 Vehicle
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 Posted:4/1/2003 08:57 |
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i have looked at my engine 2 x now and cant find the plugs or plug wires. where are they? its not like im wanting to change them just curios. are they hidden by some bolted on piece of plastic or metal?is it a pain to change them? it takes me 8 minutes to change the plugs on my 351 ski nautique and i change them every year since i fog the engine for winter. |
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Weatherlite
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• Mountain Home AFB, ID, USA |
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• Registered on 10/21/2002 |
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• 133 posts |
• 1 Vehicle
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Posted:4/1/2003 11:19 |
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They're on the "inside" of the heads, near the fuel injectors. There are no plug wires either...at least not in the conventional sense.
There are 10 individual coil packs, 1 per plug, that sit directly on top of the plug. I don't have a pic but it shouldn't be too hard to find em now that you know what to look for.
As far as changing them...I haven't done it yet. Heard it's a pain. But, I wouldn't worry unless you're having troubles...the factory plugs are supposed to be good for 100k.
Mikie |
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trauski
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• indianapolis, IN, USA |
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• Registered on 3/10/2003 |
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• 44 posts |
• 1 Vehicle
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Posted:4/1/2003 15:09 |
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i think i know what you are talking about. seems like they could have put a hotter coil pack system on that motor and gained some more horses in the process. |
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monsta
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• The Big Island, HI, USA |
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• Registered on 1/5/2002 |
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• 1,056 posts |
• 2 Vehicles
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Posted:4/1/2003 15:44 |
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Just to further explain their location... The coil packs are yellow on top. The plugs are underneath. 
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Weatherlite
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• Mountain Home AFB, ID, USA |
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• Registered on 10/21/2002 |
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• 133 posts |
• 1 Vehicle
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Posted:4/2/2003 12:17 |
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I'm not an electrical engineer by any stretch of the imagination so correct me if I'm all screwed up.
It seems to me that the small coil pack would be fine because it only has to supply juice to one plug. Conventional systems have to be able to deliver juice to all cylinders so there's not much "rest" time in between firings. On the mod motors each coil is able to rest 7 or 9 times as long as before (depending on type of motor) so that it can build up more power in the time allotted. I know it's not a capacitive discharge (CD) system so it's really not "building up" power but the dwell time is there so it can have a hotter charge.
This at least makes sense to me. Any other ideas/opinions on this?
Mikie |
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Dave Sullivan
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• Kitchener, XX, Canada |
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• Registered on 2/27/2003 |
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• 199 posts |
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Posted:4/3/2003 18:33 |
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It also means the coil (s) will last longer since they are only required to do 1/8 the work. It may also be true that you get 100% spark since it gets 7 times more time to power up. But I expect that this is only remotely true since the rise time is likely many times faster than the discharge rate of a conventional coil assy even at high rpm. I could be wrong but I dont think theres a capaciter involved. At least not for the spark anyways. I wonder how they keep the plugs clean and the Gap constant?
Dave.
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Nikos
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• Boston, MA, USA |
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• Registered on 5/6/2003 |
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• 15 posts |
• 1 Vehicle
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 Posted:5/6/2003 12:51 |
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Hey guys, I've just registered to these forums, but have been reading/enjoying them for some time. This coil topic is one that I had to say something about, and maybe give you guys a heads-up. My 2000 X started to misfire a couple weeks ago, so I popped the hood and looked for what I thought would be something obvious. I saw one of the coils (2nd from back on pass side) jumping up/down when the engine was running. I immediately shut it down, and started to investigate. Everthing was there (ie: the plug was still screwed in, but the mounting bracket on the coil had broken off and the coil was not staying in place. I bought a new coil at the local dealer ($65), and replaced it, but the thing still misfired! I had no clue at this point, so decided not to fool with it and had it towed to the dealer for a look. They looked at it the following Monday, and told me that there was no-plug in the hole, and that I needed yet another coil because the one in there was broken. I tried explaining that I had just replaced the coil, but they would not believe me. Long story short, I ended up buying two new coils and a plug. The original plug had somehow vanished into thin air......
On the ride home from the dealer, after that $200 service/repair, I was on the highway and all of a sudden heard what sounded like a gunshot under the engine/underbody , that banged all the way back to the rear..... The old plug had freed itself from somewhere under the hood, so I guess it had come out somewhere between my home and the dealer when they towed it, but how..........
Anyway, yes, the plugs are a pain in the %$#$ to get to towards the rear of the engine on the v10, and they are not supposed to be touched for the first 100k miles unless of course they decide to 'pop' out as mine aparently did.
Nikos - 2000 X Ltd, Rancho's, APC Lights, Video, On-board Installed supercomputer G4, 285-75-16s, blah blah blah.... |
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