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Would you be able to identify the plug that you removed from cylinder no.6 for closer inspection? As you are presumably intent on working on the car yourself, I would be considering an investment in a Durametric. The car must be throwing codes, and shooting in the dark can prove costly.
Have you cleared those codes subsequent to cleaning your MAF and have they returned? Is your car manual or Tiptronic? Does the part number on the blue cap to your coolant reservoir end with '04'? Your engine oil is presumably as it should be with no condensation under the cap?
If your testing of (idle) pulleys did not include checking your water pump pulley for play whilst you had the belt off, it may be a good idea to do so if only to rule that out. You haven't mentioned anything about temperature so presumably that is normal when the engine is up to full operating temperature?
wizard replied to Storm92's topic in 9PA, 9PA1 (Cayenne, Cayenne S, Cayenne Turbo, Cayenne Turbo S)Logic would suggest a connection issue, however, I have read that rebooting sometimes works - simultaneously pressing the 1-4-8 keys on the PCM unit. The following might also help, if applicable to your system:- https://www.callasrennsport.com/blog/porsche-pcm-issues
As I understand it, a PDK transmission requires both a transmission fluid change and clutch fluid change. The clutch fluid change needs to be carried out twice as often as the transmission fluid. If your problem is not software-related, I'd hazard a guess at a clutch fluid change being necessary. Odd that a Porsche dealer would state that a clunking PDK was "fine and normal" !
wizard replied to ninerguru's topic in DIY Articles - Carrera (996) - Common Fixes and RepairsGasoline smell and poor mileage. You might consider looking at your spark plugs for possible fouling. Just a thought.
I believe that the engine would need to be hotter than that for the fans to activate. Have you checked to see if there has been any drop in the coolant level after the engine has cooled down again? In my case (water pump), there was no readily visible evidence to suggest a leak other than some coolant loss judged from viewing the level in the reservoir ... and powdery sort of deposits in the vicinity of the water pump.
Do you have any history on the car i.e. if the water pump has ever been changed? Provided the car has the correct level of coolant, opening the burp valve whilst idling it shouldn't do any harm. You will, of course, need to monitor the temperature and coolant level. That valve is under the rubber cover and adjacent to the coolant fill cap. As the cap itself is Porsche and '04', it should be OK.
On my 2003 Boxster, it was relatively easy to check out the water pump by removing the panel beneath the carpeting behind the seats. If it appears to be a water pump problem, that then gives you access for serpentine belt removal to check for any play on the pump bearing. Were any/all fans running at full speed at the overheating stage?
A Durametric scan and clearing of any codes may resolve the issue ... if you're lucky. If you do a search for 'Tiptronic "reduced driving" mode - safe?' under the 996 forum, the guidance there should equally apply to the 986 Tiptronic and it may ease your mind a bit.