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Thanks for all the tips in this thread. I took my time and finished the spark plugs tonight on my T and replaced the air filter as well. I still need to reinstall the spoiler and bumper tomorrow. I also ended up removing the intercooler and assembly to access the rear plugs. I initially tried without removing it and had a hard enough time accessing the heat shield. The rear plug seemed impossible but once the intercooler was out, it was straightforward.
Here's the passenger side. Easy access to all the plugs.
Some things I came across:
Some of the hoses/tubes were a little difficult to reinstall. I used a plastic trim tool to push on the clamp and along the rubber adapter to get it seated. If there's enough room, you can twist the tube back and forth.
On step 19 in the guide above, the nylon tube is held in place by a small metal clamp. I couldn't compress it when reinstalling to lock back in place so I'll buy some small hose clamps tomorrow.
On step 20, the intake tube that goes to the compressor inlet is held in place by a clamp with a screw and a rubber o ring. The o ring sits between the clamp.
When removing the intercooler and assembly, do one side first and reassemble in case you forget which screw goes where. You can walk over to the other side and simply look as a reference.
The intercooler assembly has a wire connected to it. I didn't bother removing it and placed the assembly on a chair to hold it in place.
Passenger side heat shield has a screw with tight clearance. There are hard lines in the way so I used a low profile torx bit.
Overall, replacing the plugs was tedious but straightforward. If you can replace the air filter, then you should have no problem replacing the plugs.
Last edited by conemasher; 05-08-2024 at 11:39 AM.
Reason: Added pictures
Just an FYI, my Porsche dealer charged about $650 for just the plugs. Well worth it on my opinion, considering one was bad or of the box and needed to be trespassed and misfiring on way home.
Just an FYI, my Porsche dealer charged about $650 for just the plugs. Well worth it on my opinion, considering one was bad or of the box and needed to be trespassed and misfiring on way home.
@Jack F - Curious if you have a 991.1 or 991.2 as well what city this dealer this in as mine charged $975 parts & labor included for my 991.2 C2S (about 3 years ago). I do recall them saying that the .1 cost significantly less to do as the plugs were much easier to access.
Replaced the spark plugs last Saturday. Took me 3 hours for the passenger side and 1.5 hours on driver's side.
After reviewing this thread, looking at pictures of the different methods I decided to go the long route and remove the bumper cover and the intercoolers.
So happy to have gone that route. Removing the intercooler means having direct access to the coils and spark plugs. I knew it meant a longer process but boy is it easier in the end.
Throughout the process I was telling my wife; How do these guys do this without remove the intercoolers?
ON the first side, part of the process is to figure out what needs to be done and in what order to remove the intercooler. That explains the 3 hours on the first side and plus a neighbour coming over to have a look and me explaining what had to be done.
On the second side, it took 15 minutes to remove the intercooler. Took me a bit more time to re-install, as one pipe is a bit harder to slip back on.
All in all not a difficult job. As others have said, now that I have gone through the process I could do it in 2-3 hours total.
Replaced the spark plugs last Saturday. Took me 3 hours for the passenger side and 1.5 hours on driver's side.
After reviewing this thread, looking at pictures of the different methods I decided to go the long route and remove the bumper cover and the intercoolers.
So happy to have gone that route. Removing the intercooler means having direct access to the coils and spark plugs. I knew it meant a longer process but boy is it easier in the end.
Throughout the process I was telling my wife; How do these guys do this without remove the intercoolers?
ON the first side, part of the process is to figure out what needs to be done and in what order to remove the intercooler. That explains the 3 hours on the first side and plus a neighbour coming over to have a look and me explaining what had to be done.
On the second side, it took 15 minutes to remove the intercooler. Took me a bit more time to re-install, as one pipe is a bit harder to slip back on.
All in all not a difficult job. As others have said, now that I have gone through the process I could do it in 2-3 hours total.
04-01-2024, 06:31 PM
