Today am changing the plugs on the 2.5 Sohc and one of the four wires came out oily, the others pristine. It seems like about three years ago I put in all new seals- everything, it came as kit for the outer head. Do the donut seals only last three years? Is this something that can wait or should I should do another seal exchange soon?

 

Thanks for any pointers!

Yeah you need to change the valve cover gaskets again. I'd suspect an unclean sealing surface to have a repeat failure that soon. That or a cheap gasket. Both mating surfaces should be shiny clean before you put the new gaskets on.

Yeah you need to change the valve cover gaskets again. I'd suspect an unclean sealing surface to have a repeat failure that soon. That or a cheap gasket. Both mating surfaces should be shiny clean before you put the new gaskets on.

 

Good idea I will order them Monday.

Spark plug bucket seals should be from subar as aftermarket ones fail prematurly.

Spark plug bucket seals should be from subar as aftermarket ones fail prematurly.

 

Makes good sense. What are they referred to in Subaru speak. I usually order on -line and don't really need the entire seal kit. Thanks

Makes good sense. What are they referred to in Subaru speak. I usually order on -line and don't really need the entire seal kit. Thanks

 

 

i am not sure, but technically they are spark plug bucket seals, as the plugs sit in a bucket in the valve cover.