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YOUR RESEARCHSome fun after car wash...Coil Packs!
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I just replaced my coils and plugs last weekend with the upgraded thicker coils
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The point being, my aged coils were old and cracked, and are being replaced with new.
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Just did this last week, same scenario(114,000 out of OEM), Porsche now list spacers as NA, dealer used aftermarket.
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I use the two bucket method - one of the detail specialists in my area recommended and he uses on all sorts of exotic cars.
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Sunday washed cars. Did all the good stuff and gave it lots of attention just like every other time. Afterwards drove to the store. Bad stuff happened, rough running, throwing CEL's and finally the dreaded blinking CEL. Pulled back into garage and checked the codes. Mainly misfires on #1 so I figured the coil pack got wet. Let it dry overnight and fired up this morning. More rough running and more codes on cylinder 1. So now I'm in the process of replacing all of the OE coil packs. Visually I see nothing wrong with the #1 coil pack and the plug was in tight, but heck, I got 139K out of the OE coil packs so time for replacement. They are just a wear part anyway. All in for coil packs and shipping $259 from Auto Atlanta. Confirmed for M96/01 with Part Number 997 602 107 02 replacing OE 996 602 102 00. Can't wait to see how much better it runs!
I do want to drop the engine! But then I think my list of repairs and replacement parts would not bode well with the wife...yet. Just thinking about the coil pack replacements is making me tired. Guess I'm getting old.
You'll need longer bolts and spacers for your heat shields. The updated 997...coils are thicker and will not allow the shields to go back on without using spacers to extend them out further.
You're not doing it right!
Just change the spark plugs.
Then just change one coil.
Then the second.
Next will be the third and fifth.
Six is next.
Finally number 4.
You
NEVER
change all the plugs all at once.
Well, at least that's how most of these threads go...
That's pretty much what happened to me in 2016 when I was down in Daytona Beach....had a misfire on number 1 after the expansion tank cracked and dropped fluid. So I bought two new coil packs, installed them on 1 and 5, came home, bought 6 plugs and 4 more new coil packs.
Those 6 plugs and 4 coil packs are still sitting in my toolbox.....need to install those!
Thanks for that info. Did not know that but did know about the longer bolts so ordered those with the upgraded coil packs. I'll have to look into that. P/N available?
Works great even on dark colors plus you can wash the car in the garage. I use the two bucket method - one of the detail specialists in my area recommended and he uses on all sorts of exotic cars.
I've only washed my car a couple times but I put a large trash bag over the engine and then closed the cover. Of course I made sure the engine was cool before covering it.
Obviously see if your shields go back on using old bolts and no spacers.
If not...
As far as spacers, I know I fabricated my own from some spare tubes I had laying around. Not sure I had to get longer bolts for the heat shields, OE's might have had enough threads with the spacers.
New bolts for the coils should come with the new coils, mine did.
Did mine this weekend, longer bolts came with the coils. Coils thicker upgraded and shields went back on no problem. Got great price from Warehouse 33. $255 shipped with Rennlist discount. Coils, plugs, oil filter, air filter all for that price.
Notice the coolant overflow hose was right next to the rear coil.It had been barfing directly onto the misfiring coil. Why do they have that located there? I rerouted it, but it really needs to be about 5 inches longer.
Got the left bank coils out. All three are cracked in various places. #1 has a nice crack in it. It is the one farthest back...most exposed so it got water soaked.
Thanks Jason! You've got a good price on these, and I should have checked out your prices. I will add you to my list of parts suppliers so I don't forget next time.
I got my right bank coils out and no drama there. Coils on the right bank look way better than 1-3. There are cracks all over those coils. So now we know, coils don't last much longer than 139K miles LOL (probably should have replaced them all the last spark plug change darnnit!)
^^ LOL..yeah. The quips about not washing the car kills me or covering the engine while washing. What? Given that I live in Florida and on any given day or hour I can be driving in torrential rain with puddles that rival small lakes. Things are going to get wet on my daily driver and that is reality. The point being, my aged coils were old and cracked, and are being replaced with new. Just a point of reference for the next person who has to deal with misfires, rough idling, and CEL's blinking after washing the car. Just replace the friggin things and drive on!
Update: Still awaiting new coil packs. Should arrive tomorrow. Wife arrived home from work and I showed her the cracked coils on the work bench. Her eyes never really saw the coils or cracks...because she was looking at my kinda rusty wheel lug bolts. I said I'll just clean those up, but there is a solution. She said what? I said titanium lug bolts. She said "I want those...get them and have them shipped asap". So doing a little lug nut upgrade as well. I love my wife! This is turning into a great job.
www.world-motorsports.com
It works very well. I'm a believer. Keep in mind, it's really only good for maintenance washes. If your car is filty, i'd do the standard soap/water/hose method first.
Update: new upgraded larger coil packs in. Longer bolts came with the coils. All in and running perfectly. Did an oil/filter change while "in there". Got my free replacement LN magnetic plug back in the sump (my other one broke last oil change). Car sounds just awesome and seems to be a bit more spirited. Only problem - the heat shields do not clear the newer larger coils. So I'm going to get some SS studs, nuts and lock nuts to bring them out a bit. Measurement shows I need about another 10MM or so. I looked up the heat shields for the 997 (new coils start with 997) and they are the exact same PN as the 996. So HUH! I dicked up the right side heat shield trying to tighten it up because the coil bolts hit and bent it, so I'll get some new heat shields before implementing my solution.
I have to say the new coil bolts make this a really easy job. You can get an 8MM wrench right on those so easy to tighten. Beats the crap out of the old hex bolts.
Old coils versus new coils
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