Corroded Coil Boots
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Corroded Coil Boots
I just wanted to know if I had bad coil boots would the V10 engine shake or vibrate. What will happen if I had old and corroded boots, sometimes I would feel the truck vibrate like if it were farting kind of like a misfire, It does not show a "check engine soon" light. If anybody knows, please advise. A few of my coil boots look kind of brownish or redish, not black like they originally are. I guess they are old. Would this affect performance and make the engine fart when i'm idling in the drive thru at Jack-in-the box. Thanks, i appreciate the help
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How many miles on your V10? What year SD?
Three things to check/change out:
1. coil/spark plug boots
2. Spark plugs need replacing
3. COP need replacing
If you boots are brown/redish, then I would certainly change them out. But if you are going to do that, might as well do the plugs too...while you are there.
Hope this helps...
biz
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2003 F250 SD SC 142" XLT FX4 V10 Auto 4x4 3.73s
Three things to check/change out:
1. coil/spark plug boots
2. Spark plugs need replacing
3. COP need replacing
If you boots are brown/redish, then I would certainly change them out. But if you are going to do that, might as well do the plugs too...while you are there.
Hope this helps...
biz
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2003 F250 SD SC 142" XLT FX4 V10 Auto 4x4 3.73s
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Thanks,
It's a 2000 with 111,000 mi on it. I just changed the plug on it but not the coils or boots. As i was changing I notice coil boots 1-5 were a little corroded. They kind of turned into a brownish or redish color. Wouldn't a bad coil trigger the check engine light. I was wondering a bad coil boot can be giving bad contact therefore creating a small misfire.
It's a 2000 with 111,000 mi on it. I just changed the plug on it but not the coils or boots. As i was changing I notice coil boots 1-5 were a little corroded. They kind of turned into a brownish or redish color. Wouldn't a bad coil trigger the check engine light. I was wondering a bad coil boot can be giving bad contact therefore creating a small misfire.
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From: Albuquerque
The misfire would have to be more than 20% of the time for the check engine light to come on. FORD has the PCM programmed for a certain percentage...before the light comes on.
IMHO...just change out the boots right now. Then if you still have the ping or misfire...purchase 1 COP and start the long process of replacing each old COP with the new one until you find the problem COP.
Hope that helps...
biz
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2003 F250 SD SC 142" XLT FX4 V10 Auto 4x4 3.73s
IMHO...just change out the boots right now. Then if you still have the ping or misfire...purchase 1 COP and start the long process of replacing each old COP with the new one until you find the problem COP.
Hope that helps...
biz
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2003 F250 SD SC 142" XLT FX4 V10 Auto 4x4 3.73s
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Any loss of voltage at the spark plug is going to make it run weird. The entire cylinder won't burn right and you'll get a little unburned gas past the exhaust valve, and "fart"... The boot being that color just means the plug is rusty and spreading it's excrement around 
I had two rusty plugs when I changed mine and the boots were rust covered.
Sounds like you changed the plugs? Or just one plug?
Have they ever been changed before?
At 111K miles it's definitely overdue.
I had two rusty plugs when I changed mine and the boots were rust covered.Sounds like you changed the plugs? Or just one plug?
Have they ever been changed before?
At 111K miles it's definitely overdue.
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Krewat,
This is my second change of plugs one was at 80,000 mi and this new change of plugs at 111,000. Just last week I changed all the plugs. But, as you stated the boots are rusted but the old plugs seemed fine. Thanks for all the input i'm going to change the all the boots see what happens. I appreciate the help.
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This is my second change of plugs one was at 80,000 mi and this new change of plugs at 111,000. Just last week I changed all the plugs. But, as you stated the boots are rusted but the old plugs seemed fine. Thanks for all the input i'm going to change the all the boots see what happens. I appreciate the help.
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dielectric grease on the tip of the plug between the boot and plug makes for a very good electrical connection. less misfires. i couldnt resist this, all the talk about the reddish brown color, as it sits farting at the jack in the box, is there any related smell or weird faces?...................... sorry. matt
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Nice one 10strokin, i don't know weather to comment on that., but it is gas related farts..heheheh..thanks for the info on the application of the dielectric...i was not aware...but will consider. Thanks
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Also, put some around the boot where it meets the coil. And, I also put a generous bead of it around the seal area where the boot seals to the head. Hopefully, that will keep direct hits of water out.
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That dielectric grease is almost like vaseline with metal in it for conductivity .Do you guys think that can kinda arc to some metal part of the engine when applied to the bottom of a plug boot to cause a misfire?
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Originally Posted by crazyrwe
That dielectric grease is almost like vaseline with metal in it for conductivity .Do you guys think that can kinda arc to some metal part of the engine when applied to the bottom of a plug boot to cause a misfire?
So, don't get it on the metal contacts on the tip of the plug, or the end of the coil where it attaches to the spring.
Silicone. Silica (sand). Glass.
That dialectric grease is like uncured silicone.