Levy

it's definitely an ouch but spot on! get it done asap and put the whole mess behind you (and start enjoying the car again)

Jim981CS

Last year there are two long threads on Planet9 on the 987 forum about a similar broken spark plug from “caymanbob75””. The first was “Broken spark plug” and follow up was “Broken plug update”. IIRC he tried soaking, heat, cold, drilling and screw extractors and finally used a drill guide and was successful in removing the plug without removing the head. I don’t know if you have similar access to your plug as he did on his 987 Cayman, but you might give it a read and possibly save $$$ if your an avid DIY’er or find an Indy that would be on board with his method.
Jim

https://www.planet-9.com/threads/broken-plug-update.251406/

original post


https://www.planet-9.com/threads/broken-spark-plug.251197/

Jack F

What was obvious from the spark plug DIY that one of our members wrote up, was that the proper angle of the socket and extension relationship to the plug well is not as expected for me. The extension was not parallel to the walls. Unless this was due to droop between the socket and extension but I think the member made it clear that this wasn’t the case.

OP, best to you and please keep us posted.

MingusDew

Keep in mind, this was the FIRST plug that OP tried to take out. They still have five more to attempt. RIP.

thesaintusa

This was my thought as well.

Hope the rest go better.

I am realizing that my RX-7 plugs are going on 9 years, with less than 1000 miles At least the oil has been changed.

IXLR8

He did a good job of it. From post #26...
I have done something similar on a 6 mm bolt that broke off after days of PB Blaster and vibration. Luckily about 1/8 inch of the bolt stuck out with a machined surface on both sides. I used a 1 inch thick steel block counter bored for a 6mm for it to fit over the end of broken bolt (to center it) and then drilled in stages up to 4.6mm so that just the threads remained (drill diameter for a 6mm bolt is 5 mm).

Used a tap and the remaining threads chipped out. This was years ago on an unimportand fastener in the 993, but I hate helicoils and Nut-Serts. Original threads are intact. Took my time and did it right. Same on another fastener that took over 4 hours to remove. In both cases, thanks to aluminum oxide for causing me grief.

rensoyka

Any time that I have been unable to get the socket perfectly straight due to poor access to the hole it has only ended up in the plug breaking at the outer ceramic part. never seen one snapped off at the threads. problem here is the spark plug steel is a lot harder than the hole threads aluminum. guess which one is likely to strip out when you heave on it?

Jim981CS

I used this on my last spark plug change and the magnetic holder and the location of the swivel IMO lessened the likelihood of applying pressure in the area of the porcelain. This socket made the spark plug easier and safer than my first plug change that I used a compilation of a standard short socket and an extension and swivel​​​​​​.
Jim

polobai

That tool doesn’t work on the 991.2. That model needs a 12 point socket.

Jim981CS

Oops. Maybe a 12 point version of the tool??? I stand by the design of the tool reducing the likelihood of breaking the plug and ease of plug removal and install.
Jim

IXLR8

These are the same but splined...


I have the same 5/8" or 16mm flex spark plug sockets that you have in 3 length from KD Tools.

MingusDew

I used this one:
FUN-DRIVING 14mm 3/8-inch Drive Magnetic Spark Plug Socket Set, Universal Joint 3/8-Inch Drive 12 PointSocket Removal Tool (14mm Short & Long) https://a.co/d/bfGLH4o

IXLR8

Having looked at the two YouTube videos in post #22, more of them popped up on YouTube and some are very good.

If I was there, I'd remove it. There is plenty of access having removed my plugs last summer.

Porsche_nuts

Can't wait to find out how OP finally decided to remove.

mtony

It's been a month, so I guess he had the dealer do it and ended up paying 30% more than the "estimate".