You just joined to tell us this. I think if you would have joined when you purchased the car, you'd be ready for everything these cars throw our way.

Anyways, sorry to hear about your issues. I'm not a fan of lexus. Styling is so drab.

 

Start with a compression test and if low
do a leak down test

 

Same here ,
Porsche refuse to make a goodwill
Even the Pipe was out to !

 

how many miles did you have on the car when it happened?

 

I replaced my bolts as soon as the SB came out explaining the issue. Just one thing, if there's a known issue you know is causing a trouble to others why not address it before sitting and waiting for it to happend? Ok it'll be replaced under warranty, but it's the engine that's going to be replaced. That's about a month or 2 depending on how the shop is with other works.

I would say, if your 958 CTT has still not gone into service for this, don't wait. Better spend some than spend a lot or be left without it for 2-3 months.

As for the coolant pipe, never heard of it on 958 until now, I have 88,000km on my 2011 958 CTT. Even my engine is modified and have no issues since new except for the Thermostat housing which Porsche addresses right away. Other than tha just Brake pads, oil & filter and pollen filter. I recently changed my differential oil, serpentine belt, tension pulley, idler pulley, tensioner and all bolts and caps. Also first bushing service for front and rear axle. I have my first semi rupture front right air suspension, not so severe, but must be addressed soon or it'll be a $2,000+ expense only on the Air Compressor. Other than that this is the best SUV I've ever owned. All this is cheap compared to a Range Rover Sport or BMW X5/X6...

 

130 000 km not that much
But i didn't know about the problem with the Camshaft adjustment .
if I know it i will change them preventive !
Now i have problem with with the Bent Valves because of that Camshaft stop turning the camshaft and Piston hit the Valves!

 

ouch! Yeah that's why I try and keep asking for SB's to the Porsche dealer or checking online. I didn't know either and heard of it after I saw 5 turbos on the shop. All needing new engines. The funny part is that I drive hard my CTT, is modified and never had the issues on the bolts which for my driving style I was told that it was an special case since others are not hard core drivers on their Cayennes and most of them are 2012-14 models with either less KM on the odometer than I. I went ahead of this situation since I heard is so bad.

 

Poor Quality for expensive car ! maybe coz VAG corporation!
the Camshaft problem are from 2009 to 2012

 

UPDATE: My SA called me and told me the repair (sheared cam adjuster bolts) were 100% covered under the emissions warranty. How this is an emissions thing I don't know but I don't care if they are covering it.

 

Great !

 

I did Both test and i have low compression and i have the leak !

But once i run the car the engine sometime is shaking a little bit and sometimes stops shaking !

I will try to check the Lifters first before start take out the head !
what you think , Kar ?

 

When you say low compression how low and you said a leak is it leaking back up the intake? Did you use the right tools to set the timing

 

Yes i did the timing with the special tools from Porsche !

I try on other cylinder compression around 18 psi

The sick cylinder compression give not more then 14 psi

The leak i made from the Liquid Gas i put inside the intake cylinder you can see it on the photo

thanks for advice

 

Which service bulletin was it? I checked the 2012 SBs and didn't see anything for a camshaft

 

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