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Oil in Spark Plug Holes

13101 Views 10 Replies 10 Participants Last post by  OdyMember
Replaced the spark plugs in my '05 EX-L (w/120k mi) and two plug hole coils had oil on them. Both of the respective coils had seals at the top that had popped out. I can't get the seals to stay back in and wonder if that is what is causing the oil to pool on the spark plugs. All spark plug tips and threads were clean of oil so it's obviously coming from "above". I've search this forum but can't seem to find any past experience with this issue. Otherwise, the van has no apparent misfire or ignition issues.

Should I just replace the coils (just to get new seals) or is there another issue that I'm missing?

Thank you!

Brandon
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Indeed--I sat down and did some head scratching and realized the spark plug tube must have a gasket at the bottom end as well as the top. Looks like both front and rear gasket kits will include the "Seal, Spark Plug" that look to be leaking (one tube is leaking on each bank, wha-who).

Now the question is whether I should just replace the valve cover gaskets or have my local mechanic adjust the valves in addition to the gaskets.
 

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Indeed--I sat down and did some head scratching and realized the spark plug tube must have a gasket at the bottom end as well as the top. Looks like both front and rear gasket kits will include the "Seal, Spark Plug" that look to be leaking (one tube is leaking on each bank, wha-who).

Now the question is whether I should just replace the valve cover gaskets or have my local mechanic adjust the valves in addition to the gaskets.
+1 on the oil tube seals that are leaking. Some cars have valve cover gaskets with integrated seals, some come separate.

If you pick just the valve cover gasket route, would you do the job yourself? If so, just learn how to adjust the valves. Eric the car guy has a video on youtube and adjust valves yourself or leave them alone.

If mechanic would do you covers to begin with, ask how much extra for valves. If the price is reasonable, then go for it.
Max
 

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Fel-Pro VS50607R for J35A6.
VS50607R1 for J35A7 (EX & Touring)

About $36 or $37 on eBay, includes the spark plug tube seals and exterior grommets where the hold down nuts/bolts are.




 

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You have to remove the complete valve cover. Check utube for Odyssey valve cover
 

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This is an old thread but it's of interest to me. My wife's 2006 Odyssey has a recurring misfile on cylinder 3. This time when I pulled the coil out the boot was covered in oil. I guess that's killing it or the spark. I came here to search for a solution and this appears to be it. For anyone else, this appears to be a pretty comprehensive video with a few caveats.


It doesn't look extremely difficult and doesn't seem to require too many special tools so I'm going to give it a go myself. Thankfully there's plenty of mobile mechanics in my area..."just in case".
 

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This is an old thread but it's of interest to me. My wife's 2006 Odyssey has a recurring misfile on cylinder 3. This time when I pulled the coil out the boot was covered in oil. I guess that's killing it or the spark. I came here to search for a solution and this appears to be it. For anyone else, this appears to be a pretty comprehensive video with a few caveats.


It doesn't look extremely difficult and doesn't seem to require too many special tools so I'm going to give it a go myself. Thankfully there's plenty of mobile mechanics in my area..."just in case".
YES. This is definitely the most comprehensive video around right now. I just followed this video to a "T", and completed my whole valve cover gasket/plenum gasket/etc. last night. The main thing it lacks is torque settings, and I used his torque pattern sometimes, and sometimes the tech manual recommendations.

BTW, if you use the Fel-Pro spark plug tube seals, they behave a little differently than the OEM Mahles. Mahles are a little firmer, a little bigger, and have to be banged in. The Fel-pros can be pushed in with thumbs (if you lube everything up - I used vaseline). Accordingly, the Fel-pros can catch and bunch up if you're not careful on the top of the tubes when putting the cover on.

GOOD LUCK!(y)
 

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