Spark plug tubes

[kk2002s]

A bit of a revised thread
Getting ready to order new plug tubes. Question to those who did this, do you do all 6 as a matter of course when only 1 or 2 actually leak?
I have 2 with minimal leaking, both driver's side, but I am of the mind set that I should just bite the bullet and do all 6

Also I'm ordering from Pelican:
Porsche originals, which need rubber seals separately
Or non-Porsche which include rubber seals

Opinions welcome

[tommy583]

I got the ones with the rings. I also replaced all six. Cheap enough to do them all, because the ones that aren't leaking now will sooner than later i figured.

[steved0x]

Originally Posted by kk2002s

A bit of a revised thread
Getting ready to order new plug tubes. Question to those who did this, do you do all 6 as a matter of course when only 1 or 2 actually leak?
I have 2 with minimal leaking, both driver's side, but I am of the mind set that I should just bite the bullet and do all 6

Also I'm ordering from Pelican:
Porsche originals, which need rubber seals separately
Or non-Porsche which include rubber seals

Opinions welcome

I did all 6 even though only 2 (the front ones) were seeping badly. I got the ones from Pelican that had the O-rings included, that were non Porsche brand, the ones for $5.25 that were "German".

When I had the car at a shop earlier this year they told me I had leaking at both sides, less than 1,000 miles after replacing them. I think they saw residue from when they were seeping before (I didn't really clean up that good but I did clean underneath where it was dripping down to and haven't seen any new oil there). I haven't had a chance to get in there and see for myself but I will do so the next time I have the rear wheels off. They said that the Porsche O-rings were the best. But if you buy the Porsche tubes off Pelican you have to get the O-rings separately and they sell the Victor Reinz O-rings. Auto Atlanta sells the Porsche O-rings and tubes as well.

If I had to do them again because they were still leaking I would spring for the more expensive Porsche ones, but I think mine are fine and the tech was just seeing the residue from the previous seepage.

[healthservices]

If I cheap out (I do that a lot...) I replace as a minimum, just the 12 - O rings if not all the tubes with the o rings. but I always replace all.

[clickman]

Here's my el-cheapo tube removal and re-insertion tools, made from what I found laying around:





I just turn the pvc cap into the tube for a few turns, then grab it and yank.

The wood block is used to pop the new tube in.

[clickman]

Here's what a 119k km (75k mile) 13 year-old o-ring looks like compared to a new one (on the right). Hopefully that explains my leaks.

The width of the o-ring groove on the tube looks overly generous, allowing spreading of the o-ring. A narrower groove might keep the o-ring effective for longer.