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Just curious if anyone knows the changing interval for the coils. Is it advisable to do every time you do plugs or maybe every second or third plug change? Thanks!
Does Porsche have a service interval for coils? I highly doubt it. AFAIK,you change them if they give you trouble. Although,I must say they're not that expensive...
Does Porsche have a service interval for coils? I highly doubt it. AFAIK,you change them if they give you trouble. Although,I must say they're not that expensive...
Because they're not horribly expensive (but hardly free) and are prone to failure, I just wondered if there is any conventional wisdom on how often to refresh (since it's so easy when doing a plug change, but otherwise a bit of a PIA if you're not already in there).
Wasn't sure if it's just luck of the draw and some of them last forever while some of them are DOA or whether they tend to "time-out" with use...
Because they're not horribly expensive (but hardly free) and are prone to failure, I just wondered if there is any conventional wisdom on how often to refresh (since it's so easy when doing a plug change, but otherwise a bit of a PIA if you're not already in there).
Wasn't sure if it's just luck of the draw and some of them last forever while some of them are DOA or whether they tend to "time-out" with use...
Personally,I wouldn't change them unless they were failing...
For many of us that are tracking our cars and approaching the 12k mark the manual calls for a spark plug change. I decided to do a DIY to show all of you just how easy this is. I accomplished the task in just 30min not counting putting the car on the lift and being extra careful my first time doing this.
I recommend removing the rear wheels to give you easy access and visibility especially if you plan to do this job with the car on jack stands. I have a full scissor lift and could do the job either way, with or without rear wheels removed. For the most part you have easy access to all of the components on the head.
Specs
Porsche Bosch spark plugs 999 170 153 90
Torque 14-21 ft. lbs.
Note I was unable to get a torque wrench on the plugs so I hand tightened.
Tools Required see photo 1
ETorx socket # 10
Torx T27 I know you guys will try and use a T25 but just buy a T27 used throughout the car
3/8” socket drive
3/8” 6” socket extension
3/8 socket swivel
14mm 12pt deep socket
Optional
¼” driver for the T27 Torx short bit or other driver.
Procedure
Always do this procedure with a cold engine.
Start by removing the heat shields 2 Etorx # 10 fasteners Photo 2
Remove the electrical feed socket to the ignition coil Photo 3
Remove each ignition coil after removing the T27 retaining fastener. Pull out the coils and set aside. Photo 4
Remove the spark plugs with a 14 mm 12 point deep socket. I started with the number 1 cylinder lower left side and worked in order. You will run into a little interference at cylinder # 3 just work around it. Photo 5
I numbered each box and put the used plugs back into the old box for later inspection and keeping. Photo 6
Install new plugs, DO NOT use any anti seize paste or lube. Be careful when installing plugs so you do not cross thread them. I hand tighten just to make sure and then torque the plugs down.
Reverse the procedure and you’re done. You just saved yourself 500+ dollars. I paid 24.15 for plugs as a reference. I understand Bosch will import plugs for this car starting in December. The price should drop at that time without a Porsche monopoly.
Have they changed the coil electrical connectors on the .2? This looks different and I haven’t figured out how to disconnect (a little cautious at the moment):
So, not sure if I did it the best way. But putting a flat blade screwdriver in the large tab at the top and pulling did the trick (and they still locked back down when finished with plug change...)
If someone knows a better way, I’d be interested for next time...
That is a good question, Grant. I want to know as well.
I can't seem to find any recommended time interval change out for coils on any car. Perhaps this is a part that is replaced upon misfire, check engine light or throwing a code. In any event, I change my coils every four years. They are cheap enough if your are DIY. Most mechanic sites seem to indicate that coils should last 100k miles.
I have removed my coils after two years and after 40 month, I have not noticed any issue with the rubber remaining pliable. I changed them yesterday at a 40 month interval and did not use any lubricant. As long as the coils are not subjected to heat for too many years (ie 2 yrs), I don't believe anything is required. Since I change my plugs every two years, I can inspect the integrity of the coil and always have a spare set coils on hand to make the change, if necessary.
Does anyone know the recommended torque for plugs on the 991.2 GT3 or have access to the workshop manual that addresses spark plug changes? Apologies if this has been covered before, but I couldn’t find a definitive take. Guessing others here are approaching the 2 year service on the .2 and will be tackling this themselves.
Does anyone know the recommended torque for plugs on the 991.2 GT3 or have access to the workshop manual that addresses spark plug changes? Apologies if this has been covered before, but I couldn’t find a definitive take. Guessing others here are approaching the 2 year service on the .2 and will be tackling this themselves.
Prerry sure it’s unchanged from .1 (just different heat rating) which is given as 14-21 ft-lbs in post #1
EDIT: According to this, looks like 15-20 NM which is only 11-15 ft-lbs (I think we want the 12mm threads in Aluminum). Also shows 90 degrees tighter than finger tight, when in doubt...
Does anyone know the recommended torque for plugs on the 991.2 GT3 or have access to the workshop manual that addresses spark plug changes? Apologies if this has been covered before, but I couldn’t find a definitive take. Guessing others here are approaching the 2 year service on the .2 and will be tackling this themselves.
I would like to know also. Two months ago I stopped by my Dealer and asked about the 2 year service(2018 .2) and they told me Spark plugs were not on the list for a 2 years service and i told them to double check but the never phoned me to give me an update
I would like to know also. Two months ago I stopped by my Dealer and asked about the 2 year service(2018 .2) and they told me Spark plugs were not on the list for a 2 years service and i told them to double check but the never phoned me to give me an update
Many people change more frequently than 2 years, but I wouldn't wait any longer than that. Trakcar and others reported worn plugs by 6,000 miles or sooner (with track use). And Robmypro mentioned his were worn well earlier than expected with road use.
01-28-2019, 04:50 PM
