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I have a 2008 Porsche Cayenne base model V6. with 200,000km…

Customer Question
I have a 2008...

I have a 2008 Porsche Cayenne base model V6. with 200,000km .I'm getting a small engine vibration when stopped at a red light. my rpm's are around 600 and sometime it may drop just below. also not sure if it's related but I get some black smoke coming from the tail pipe when it starts in the morning for about the first 30 seconds or so.

Mechanic's Assistant: Just to clarify, what are the exact lights you're talking about?

Red lights on the road like stop signs

Mechanic's Assistant: Are you fixing your Cayenne yourself? What have you tried so far?

Yes I have a small garage I do some of my own work. I've changed the engine mounts so far. one of them didn't look good so i replaced them all

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Thats about it

Submitted: 9 months ago.Category: Porsche
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Answered in 8 minutes by:
11/2/2017
Porsche Mechanic: Lou P., ASE Certified Technician replied 9 months ago
Lou P.
Lou P., ASE Certified Technician
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Satisfied Customers: 6,244
Experience: I Have knowledge in almost all car lines and can help with general questions and more!!!!!
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Hello, my name is***** and i will do my best to assist you.I am going over your story now and will reply back soon with some info,thanks!

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Porsche Mechanic: Lou P., ASE Certified Technician replied 9 months ago

with a vr6 with this many miles i would be concerned about cylinder scoring, slight air leaks with pcv hoses and also timing chain or gear wear.

compression and leak down should be checked.

spray the engine down for leaks.

take off the valve cover and check the timing

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Porsche Mechanic: Lou P., ASE Certified Technician replied 9 months ago

if you already did the engine mounts I would suspect the engine has a running issue hence the black smoke but its not bad enough to cause a check engine light unless you do have a check engine light that I am not aware of.

Lou

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