sputtering after changing spark plug

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04-26-2016, 12:59 PM

#11

Chablo954

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I have the bent coils can I use the straight boot one?

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04-26-2016, 01:03 PM

#12

Martian

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Which engine?

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04-26-2016, 01:04 PM

#13

Chablo954

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2007 lariat 5.4 amazon said they fit exactly. But I read you need to use bent boots if you have them

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04-26-2016, 01:04 PM

#14

Martian

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You should be using the straight boot ones

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04-26-2016, 03:04 PM

#15

Chablo954

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Ok I'll order the ones from Amazon and hope that's the problem

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04-26-2016, 03:05 PM

#16

Martian

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You also need to replace all those plugs. Motorcraft SP-515, even the one you already changed on 3.

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04-27-2016, 05:38 AM

#17

techrep

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Yep... start with 8 fresh plugs and 8 fresh COP's

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