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DIY vs. Dealership

Old Mar 21, 2025 | 08:55 AM
  #1  
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Default DIY vs. Dealership

Given how much the dealership charges, I’m considering going the DIY route for spark plug and engine air filter replacement on my 991.1 S. There are plenty of videos online covering these, but would like to check in with other 991.1 owners who have DIY’d these tasks. I know the rear bumper needs to be removed for the filter replacement and looks like plug replacement may have some accessibility challenges, but having done it yourself would you consider it easy enough to do by someone with average mechanical skills?

Thanks in advance.
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Old Mar 21, 2025 | 09:02 AM
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You should be fine with an average skill set. Pelican Parts has good instructional videos/How-to posts to help you do everything you wan to do. 991.1 sparkplugs are very easy to get to. 991.2 not so much.
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Old Mar 21, 2025 | 09:52 AM
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Dealer charges are the 2nd reason I avoid them, first being incompetence and carelessness.

Been to 5 different Porsche dealers over last 11 yrs for both my Cayman, Cayenne and 991s, at least 50% of the time the service work was clumsy, 2 oil drain plugs stripped but threaded back on without notifying me, unneeded "test drives" after service, no clean up after service in the engine bay.. I can keep going.

unless the service is simply too messy or difficult/requires special instructions, I avoid dealers like the plague.

Gather all the information, parts, tools befor eyou do the job, torque everything correctly, do no rush and have no distractions around especially when doing ot for the first time.
Spark plugs on a 991 are a 1.0-1.5 hour job, even if you take your sweet time. Add the feeling of "its done right, and by ME" its priceless.

This will also give you more confidence to tackle other services in the future. Good luck
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Old Mar 21, 2025 | 10:40 AM
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Independent shop is another option. Less than dealer. To others point, yes, you can DIY though, there is plenty of information out there now that these cars are 10 years old.
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Old Mar 21, 2025 | 10:56 AM
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Definitely doable by average Joe DIY'er. Obviously you need to get the car off the ground to do the plugs. I bought a Quick Jack 5 years ago and it has paid for itself several times over. I was even able to do the clutch on my 987.2 Cayman S with it.
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Old Mar 22, 2025 | 08:24 AM
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Thanks for the input, gentlemen!
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Old Mar 22, 2025 | 10:04 AM
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Default I paid $150

To have my plugs and coils done at an independent "guy" to 1 hour. As he has more extensions seemed like a no brainer.
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Old Mar 22, 2025 | 12:26 PM
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Originally Posted by desmotesta
Dealer charges are the 2nd reason I avoid them, first being incompetence and carelessness.

Been to 5 different Porsche dealers over last 11 yrs for both my Cayman, Cayenne and 991s, at least 50% of the time the service work was clumsy, 2 oil drain plugs stripped but threaded back on without notifying me, unneeded "test drives" after service, no clean up after service in the engine bay.. I can keep going.

unless the service is simply too messy or difficult/requires special instructions, I avoid dealers like the plague.

Gather all the information, parts, tools befor eyou do the job, torque everything correctly, do no rush and have no distractions around especially when doing ot for the first time.
Spark plugs on a 991 are a 1.0-1.5 hour job, even if you take your sweet time. Add the feeling of "its done right, and by ME" its priceless.

This will also give you more confidence to tackle other services in the future. Good luck
Very well articulated @desmotesta. Only one thing I would add is that there is no mechanic in any shop, dealer or independent, that will care as much about your car as you. You will be concerned with every detail, a paid mechanic just will not, unfortunately. And I’ll emphasize a point made above, the feeling of satisfaction is huge!
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Old Mar 23, 2025 | 02:49 AM
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Just did my spark plugs and an oil change today. Super easy if you have the proper tools. Not difficult at all and if you do get stuck, YouTube university is there to help and guide you through it.
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Old Mar 23, 2025 | 01:44 PM
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And remember, the money you save by not paying for these maintenance procedures easily pays for the purchase of a few tools you might need. The knowledge you gain... priceless!
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Old Mar 23, 2025 | 02:25 PM
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Thanks all - I was hoping this is the way I would be steered!
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Old Mar 25, 2025 | 12:41 AM
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Seems like some have poor experiences with Porsche dealer. I think if you know the dealer service dept, that is less likely to be an issue. We have seen a few DIY spark plug fiascos. Price the dealer and the the independent shops. You might be surprised at the lower cost of the dealer. The dealer has more incentive to make it right is something arises. Best to you!
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Old Mar 25, 2025 | 10:20 AM
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Originally Posted by Innw21
Thanks all - I was hoping this is the way I would be steered!
Post up where in NC are you located I bet there are others that can lend a hand or at least an encouraging word.

Did you join your local PCA?
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