Spark plug tube replacement - requires draining engine oil?

[John V]

I have a leaky spark plug tube. I have the new tubes and new o-rings (bought all six just so I had them on hand) and am planning to do this without removing the valve cover. Will a significant quantity of engine oil leak out when this is done? If so, I'll just perform an oil change at the same time since I'm almost due.

Thanks,

John V

[seafeye]

I have a leaky spark plug tube. I have the new tubes and new o-rings (bought all six just so I had them on hand) and am planning to do this without removing the valve cover. Will a significant quantity of engine oil leak out when this is done? If so, I'll just perform an oil change at the same time since I'm almost due.

Thanks,

John V

Just changed my plugs yesterday. Had a oil over the spark plug socket as well. Lucky for me it was just one cylinder. #1 i think.

Good news is the oil was very clean! Guess i will be doing the same thing. Can't be much help for you though. I will wait here

as well.

[John V]

Well, I did it, and no oil leaked out of the valve covers when the tubes were removed. I suspected it wouldn't, but wasn't sure so I was ready with a rag just in case.

I have to say, this was one of the easiest things I've done to a Boxster. It was less than an hour start to finish (including lifting the rear of the car onto jackstands, removing the wheel, etc). I used a snap-ring pliers to remove the tubes - I did all three on the driver's side of the motor which is where the leaks were. Worked like a charm. I used carb cleaner to clean the valve cover of all the oil that leaked out so I can see if it starts leaking again.

I recommend replacing the tubes AND the o-rings. My old tubes were very brittle.

John V