Hello Everyone,
I need to change my sprk plugs on a (2002) S80. I went to the service center next to my job and they said it would cost $325 to change the 6 plugs. To say the leastI was shockedwhen I heard that. They stated it takes 2.5 hours and the plugs are $20 a piece. So my question is does anyone have experince with changing the plugs on this vehicle and can coach me on how to do it. I did my own plugs on my (98) S70 and it was a breeze. I see that there is is a similar cover that needs to be removed like the S70. Are all 6 plugs under that one cover or in a differnt area too.
I would also like to know if the NKG gold plated plug is the one of choice and has anyone had experience with them.
I appreciate any info I can get to assist me on my task.
Thanks
Roger B.

 

hake no.. don't pay them that.. You should be able to change them easily. I changed mine within an hour (not a mechanic). Spend your money on better plugs instead. The original plugs have 3 prongs, I didn't know and replace it with bosch single prong, not even a problem. Also, I noticed the wire protectors on mine were burn out, check yours and replace them as well.

 

It is almost exactly the same as the S70.
But the S80 has coil packs per cylinder instead of the ignition wires.

I assume it is a Non-turbo?

 

How diffiicult is it to change the plugs on a turbo model? (02 s80 T6)

 

S80 t6 isn't much harder just a bit more tedious. You have to remove the charge air piping and the suction pipes from the top of the motor, as well as the ancilary lines that plug into them, then it's a matter of removing the cover and coil packs to get at the plugs. If you do it yourself I recommend taking a hair dryer or heat gun and warming the ends of the charge air piping before sliding them back over the aluminum turbo lines, otherwise you run the risk of cracking them.
As far as plugs, you can get the O.E. plugs from the dealer as a kit usuallyfor less than you could buy NGK plugs individually.

 

Just a forewarning word of advice: The S80 is so sensative it won't run properly with anything except Dealer OEM Volvo plugs. I went through 3 sets of aftermarket plugs all to find out that they were the reason for my engine misfire. The other reason is because the OEM ones are specifically made for the vehicle, they're pre-gapped. I didn't know this until just recently but get your gapping even minutely off on spark plugs and you'll have problems.

Buy the plugs from the dealer (they're like 25 bucks for the set) and install them yourself. Here's how you do it like I did(If you have a non-turbo).

1.) Remove the torq flex bolts on the plastic cylinder head cover. It is 2 pieces, so after you take them all off set them aside.
2.) You'll then see the coilpacks. They're fastened down with one 10MM bolt each.
3.) When you have all the 10 MM bolts off, pull out the coil packs. make sure you mark which ones came out of what cylinders, or you'll regret it like I did later.

4.) Now to remove your old plugs, you'll need a special spark plug socket and the spark plug extension for your wrench. DO NOT try to take them without this, they won't come out. You can rent them at autozone for next to nothing.

5.) Use the spark plug socket to unscrew them out of the cylinder head

Reverse the process above to install the new ones, but be sure you put anti seize on the threads of the plugs since the cylinder head is aluminum. If you don't, you'll risk stripping the threads and they'll be permanently stuck. Make sure they're tight with the wrench, but not too tight because again you don't want to ruin the threads in the head.

Hope that helps! [8D]