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General E46 Forum
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Old 07-20-2012, 07:18 PM   #1
xecure
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Any one ever clean the boot of their ignition coil?

Just ordered a set of slightly used ignition coils for my car. Was wondering if I should clean it before installing it. Any particular solution/fluid I should use?
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Old 07-20-2012, 07:24 PM   #2
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I would get a new set of boots. They're pretty cheap
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Old 07-20-2012, 10:31 PM   #3
xecure
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I would get a new set of boots. They're pretty cheap
I was scared someone was going to suggest this. Actually I was only planning on running on these coils till the end of the year. I'm at 93k miles now, and I have a new set of ignition coils on my 100k to do list. I actually bought these 6 coils from a wrecked 325i for $50 bucks.
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Old 07-21-2012, 01:36 AM   #4
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Unless it looked dirty inside the boot especially on the metal connector i wouldnt worry about it. What as wrong with your original coils/boots?
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Old 07-21-2012, 02:59 AM   #5
xecure
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Unless it looked dirty inside the boot especially on the metal connector i wouldnt worry about it. What as wrong with your original coils/boots?
Cylinder 1,2 and 3 were misfiring. When I changed the coils around 2 of the misfires moved with it. I'm assuming the coils wen't bad.
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Old 07-21-2012, 06:15 AM   #6
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I would just buy new ones. Over time the tips crack and break off.
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Old 07-21-2012, 10:18 PM   #7
xecure
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I would just buy new ones. Over time the tips crack and break off.
That's the plan. But I'm planning on making a huge purchase from my supplier in a few months for my 100k maintenance so I haven't purchase new coils yet. Saving that for my large purchase for some extra discounts.
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Old 08-18-2012, 04:15 PM   #8
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Can you buy just the rubber boot for the Bosch coils? I have one that's torn and I don't want to replace the whole coil if it's not necessary. If someone has a link to them, please post up.

Thanks,

Steve
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Old 08-18-2012, 06:14 PM   #9
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Buy new ones! I had misfiring at around 70k miles and it was the because of the boot. Just because they look like new doesn't mean they're not going to fail. Mine looked great, but, there was a tiny arc trail that went up the plug, under the boot to the high voltage side. The boot was suppose to prevent that!

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