Oily Spark Plugs?

[Dirtsmith]

Searched before posting... How common is it to find minor oil fouling and oil on the threads of the lower 8 plugs and should i be concerned about rings at 152k already? all lower 8 had oil on them, the upper 8 did not. these are original plugs as far as i can tell.

 

[Gumby]

Searched before posting... How common is it to find oil on the threads of the lower 8 plugs and should i be concerned about rings at 152k already? all lower 8 had oil on them, the upper 8 did not.

Oil on lower spark plug only, not valve cover

2011, 115k. Have had a slightly rough idle issue for a while. Among other things, changed all 16 plugs and 2000 miles later decided to pull them again to check gapping. When I originally pulled them, cyl 5 and 6 bottom plugs had oil on them on the end going into the combustion chamber. Anyway...

www.fordraptorforum.com

Did you find this????

 

[Dirtsmith]

Oil on lower spark plug only, not valve cover

2011, 115k. Have had a slightly rough idle issue for a while. Among other things, changed all 16 plugs and 2000 miles later decided to pull them again to check gapping. When I originally pulled them, cyl 5 and 6 bottom plugs had oil on them on the end going into the combustion chamber. Anyway...

www.fordraptorforum.com

Did you find this????

Sure didnt right until i posted this and it was the first similar thread. his thread doesnt really help answer my question though.

 

[Gumby]

IMO..... The lower plug are not the work horse plug. more a clean up plug. Are you using/loosing oil between changes? if so how much? if not.... why would you suspect rings? this is engine with 150k on it. mine has 195K I would not be alarmed if I saw a little oil on the thread portion of the plug. With that said I have Not done my plugs Yet. They were done at 120K. I do plan on doing them soon if I find a little oil on them and the truck runs as it should. I am not going to leak it down and compression test, bore scope. To chase a problem that is not really there. Because it used a pint of oil in 5000 miles.

 

[Dirtsmith]

IMO..... The lower plug are not the work horse plug. more a clean up plug. Are you using/loosing oil between changes? if so how much? if not.... why would you suspect rings? this is engine with 150k on it. mine has 195K I would not be alarmed if I saw a little oil on the thread portion of the plug. With that said I have Not done my plugs Yet. They were done at 120K. I do plan on doing them soon if I find a little oil on them and the truck runs as it should. I am not going to leak it down and compression test, bore scope. To chase a problem that is not really there. Because it used a pint of oil in 5000 miles.

Just bought the truck so i haven't had time to figure out consumption issues. Plugs hadn't been done, coils were so bad they were unsalvageable on a California truck which was wild.

 

[MTF]

Just bought the truck so i haven't had time to figure out consumption issues. Plugs hadn't been done, coils were so bad they were unsalvageable on a California truck which was wild.

If a vehicle wasn't properly maintained, it doesn't matter where it came from!

I would switch engine oil up to W5-30:

Mobil 1™ Extended Performance High Mileage 5W-30 | Mobil™

Using Mobil 1's Triple Action Formula+, Mobil 1 Extended Performance High Mileage full-synthetic motor oil gives engines with over 75,000 miles the extra care they need to go the distance.

www.mobil.com