2008 Porsche Cayenne Coolant Leak
2008 Porsche Cayenne Coolant Leak . Yup, this had the classic coolant leak. In may particular case of the three coolant pipes, the larger one next to the intake manifold runner holes had a 7 inch long crack in it. Coolant pipes AZ. Rennlist Porsche Discussion Forums from rennlist.com In may particular case of the three coolant pipes, the larger one next to the intake manifold runner holes had a 7 inch long crack in it. Plastic tubing connected to coolant system will become brittle and cracked, causing overheating and lost of coolant. Leak is due to faulty plastic that was redesigned to metal tubing due to common reported issues.