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Diesel fuel system under pressure when shut down?

Model: CayenneD, Year:2013, Mileage:15,000, Type of use:Street use only
Re the question on draining water and changing the fuel filter on a Cayenne Diesel. Will the fuel system retain pressure that must be bled down before attempting to change the filter or remove water? Will it be necessary to purge air from the fuel system before starting? Thanks!

Diesel

Model: Diesel, Year:2013, Mileage:30000, Type of use:Street use only
How often does the fuel filter need to be drained of water or changed on the diesel engine? Is there a DIY site?

Performance of 3.2 v6 ('04-'06)

Model: Cayenne, Year:2005, Mileage:36,000, Type of use:Street use only
I am looking for a used v6 Cayenne. I've heard various opinions about the VW based v6. What are your thoughts relative to performance and reliability?Thanks

Engine Hesitation

Model: Cayenne S, Year:2009, Mileage:18025, Type of use:Street use only

coils rusting

Model: Cayenne, Year:2006, Mileage:64000, Type of use:Street use only
Have read that washing/spraying the engine area can cause rusting of the coil pacs. Does this apply to the 2006 Turbo? Should I be concerned? Need to keep that area presentable, you know. ThanksBen

low coolant light

Model: cayenne S, Year:2008, Mileage:54000k, Type of use:Street use only
Hello sir.I have recently bought an 08 cayenne S and periodically the low coolant light comes on in the display. Should i be concerned? I have looked under the hood and smell coolant. Is there any issues and what are the possible problems i can expect from this?

Does a V6 Cayenne fall under the same T-Belt rules with other Porsches

Model: Cayenne, Year:2004, Mileage:72000, Type of use:Street use only
Does the Cayennes esp the V6s have the same stigma with other Porsches when you replace the T-belt you replace the water pump?

coolant hoses

Model: cayenne s, Year:2005, Mileage:105000, Type of use:Street use only
my cayenne s developed a leaky pipe which seems to be a common problem.faulty engineering is something they should have recalled or offered a replacement that is metal for purchase.why was this common problem not addressed?

turbo excessive oil usage

Model: Cayenne Turbo, Year:2005, Mileage:65235, Type of use:Street use only
Why does turbo cayenne use escess oil in heavy stop and go traffic, but on long drives very little oil use? Went to three dealers,Maitland,Fl, Southampton, NY;Huntington ,NY.PCA mecanic says d/s turbo leaks $3k to fix; Southampton says seapage due to angle that turbo sit, must clean,left bank dry. Porsche says normal.Uses 1/2 qrt in long drive 1k; city traffic 2 qts 660k.Is this a design flaw? Car out of warrantee 11/20/2010. Please help! Porsche no help!

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