SOHC EJ25 spark plugs

[idosubaru]

Comments on doing this job? A friend is asking if I want to do his spark plugs.

 

Lots of thread on DOHC stuff but few remarks on SOHC.

[nickb21]

It's not too bad, the plugs are angled, and the openings are on the top of the valve cover.

 

EDIT: Oh, and this is referring to a 00-04 legacy/outback. I assume others are similar, but not sure what stuff/plastic subaru might have moved/added.

 

For the passenger side you'll want to pull the air intake snorkel/plastic, that'll give you plenty of room. Driver side I get away with just unbolting the washer tank and moving it out of the way. (Might need to unclip the wires for the washer pumps though, sedan has 1 motor, wagon has 2). (It's a bit tight, but not too bad. Some people will say to pull the battery, but I don't feel like going through that much effort.)

 

I'm pretty sure I use just a long extension, and no u-joint. I like to use the sockets that have the rubber inserts for removal/insertion, and start threading the plug in by hand.

 

Biggest pain sometimes is pulling the darn plug boots! (Here's hoping the gaskets are still good and you don't find a pool of oil in the plug well!)

Edited December 7, 2009 by nickb21

[Qman]

It's not too bad, the plugs are angled, and the openings are on the top of the valve cover.

 

EDIT: Oh, and this is referring to a 00-04 legacy/outback. I assume others are similar, but not sure what stuff/plastic subaru might have moved/added.

 

For the passenger side you'll want to pull the air intake snorkel/plastic, that'll give you plenty of room. Driver side I get away with just unbolting the washer tank and moving it out of the way. (Might need to unclip the wires for the washer pumps though, sedan has 1 motor, wagon has 2). (It's a bit tight, but not too bad. Some people will say to pull the battery, but I don't feel like going through that much effort.)

 

I'm pretty sure I use just a long extension, and no u-joint. I like to use the sockets that have the rubber inserts for removal/insertion, and start threading the plug in by hand.

 

Biggest pain sometimes is pulling the darn plug boots! (Here's hoping the gaskets are still good and you don't find a pool of oil in the plug well!)

 

+1

 

After doing the head gaskets on the wifes '98 Outback I really appreciate my SOHC motor so much more. It is a PITA just to pull the plugs. No big deal really. I won't have to do them again for about 5yrs. By then it should be gone for the next one.

[davebugs]

Gary,

 

You don't mention year or model.

 

But all the SOHC's that I've done (up to 2006) are much easier than any of the DOHC's.

[michaelbteam]

Any tips on H-6 sparkplug removal? 2003 LL Bean. Thanks.

[idosubaru]

Any tips on H-6 sparkplug removal? 2003 LL Bean. Thanks.

i'm curious about that too since i have the same engine. this is pretyy well documented ont he subaruoutback forum, might want to check there?

 

as an update to my friend - he had a clutch failure - poor guy has gotten the run around like crazy on that trans/clutch and i didn't time to do a clutch job for him. Anyway - his clutch failed so he ended up having the plugs done at the same time the clutch was fixed.