Oil on spark plug

2007 HONDA PILOT

125,377 MILES • 3.5L • V6 • 2WD • AUTOMATIC

THAIR71

MEMBER
3 POSTS
FOLLOW

I have misfire on cylinder three, when I checked if the problem with coil or the spark plug, I was shocked the coil was full of oil and the plug was terribly burned.
I need to know what parts I need to replace (if part numbers please).
Also, if there is a link of video on how to do so.
If no video, photos and diagrams will help.
Many thanks...

Jul 2, 2019 at 10:25 AM

SCGRANTURISMO

CERTIFIED EXPERT
4,897 POSTS

Hello,

Can you see where the oil is coming from? Is it leaking from the valve cover into the spark plug well or is the cylinder head cracked and it is leaking from there? Please check and get back to us. Once we determine where the leak is from we can get you part numbers and instructions on how to replace them.

Thanks,
Alex
2CarPros

Jul 2, 2019 at 10:46 AM

THAIR71

MEMBER
3 POSTS

Thanks for your prompt reply.
Frankly, I cannot see where the oil coming from! It is hard to determine because the place is so tiny and complicated.

Jul 2, 2019 at 11:02 AM

SCGRANTURISMO

CERTIFIED EXPERT
4,897 POSTS

Hello again,

Okay. The best place for an oil leak like this would be the valve cover gasket. Your vehicle's valve cover has spark plug seals that, if leaking, would cause this condition. In the diagrams down below I have included specific step by step directions from the factory for the removal and installation of the valve covers including the spark plug seals. Please go through this guide and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros

Images (Click to enlarge)

Jul 3, 2019 at 11:19 PM

THAIR71

MEMBER
3 POSTS

Thanks a lot.

Jul 4, 2019 at 12:06 AM