Oil Above the spark plug???

Oil Above the spark plug???

Author
Discussion

rufusgti

Original Poster:

2,530 posts

192 months

Wednesday 24th September 2014
quotequote all
I've never seen this before, I hope someone can explain whats happened.
While servicing the Honda HR-V I picked up a few weeks ago, just swapping the last spark plug. I noticed the socket came out caked in black oil! on pulling the spark plug out It was totally covered in oil. I say totaly, the electrode wasn't. So the oil must have been above the plug. The plug also wasn't very tight and was in poor condition. Like I say I've never seen or heard of this. Is there any way to ex2
plain how the oil got there. The car does burn a bit of oil, I swapped the oil and filter and went for a slightly thicker oil to see if that will help. The car runs fairly well and very quietly. 83k miles. it's the 1.6 vtec petrol.

stevieturbo

17,263 posts

247 months

Wednesday 24th September 2014
quotequote all
rufusgti said:
I've never seen this before, I hope someone can explain whats happened.
While servicing the Honda HR-V I picked up a few weeks ago, just swapping the last spark plug. I noticed the socket came out caked in black oil! on pulling the spark plug out It was totally covered in oil. I say totaly, the electrode wasn't. So the oil must have been above the plug. The plug also wasn't very tight and was in poor condition. Like I say I've never seen or heard of this. Is there any way to ex2
plain how the oil got there. The car does burn a bit of oil, I swapped the oil and filter and went for a slightly thicker oil to see if that will help. The car runs fairly well and very quietly. 83k miles. it's the 1.6 vtec petrol.
It's pretty common, your rocker cover is leaking.

andyiley

9,220 posts

152 months

Wednesday 24th September 2014
quotequote all
^^^ What he said.

It is as simple as that.

S0 What

3,358 posts

172 months

Thursday 25th September 2014
quotequote all
Very common on twin cam motors with the plugs in the middle of the head, especialy ones where changing the cam belt requires the removal of the rocker cover to lock the cams.

LordHaveMurci

12,043 posts

169 months

Thursday 25th September 2014
quotequote all
Took ages to work out this was the cause of an intermittent mis-fire on my 172!

anonymous-user

54 months

Thursday 25th September 2014
quotequote all
it's a CAM cover......... /notsooldskool

LordHaveMurci

12,043 posts

169 months

Thursday 25th September 2014
quotequote all
Max_Torque said:
it's a CAM cover......... /notsooldskool
Young unlaugh

DrDeAtH

3,587 posts

232 months

Friday 3rd October 2014
quotequote all
Max_Torque said:
it's a CAM cover......... /notsooldskool
Some dohc engines still have rockers to operate the valves, so rocker cover would also be correct.