2006 CS 6Sp 83K.
Visual inspection of one cylinder with a bore scope shows scoring.
Spark plug
fouled with oil. Cats fouled with oil enough to give me a CEL. But
Blackstone labs
shows no signs of bore scoring. I am confused.1000 miles on the oil when sampled. Is it possible any meatal is trapped in the filter? Looking for input
Attachments
https://www.planet-9.com/attachments/ccf09242020-pdf.270801/
Dude, how many times are you gonna post this? Four times in the last day. On boards I moderate, that's called spamming.
Sorry if you feel this is spamming. I feel it is a post from a disheartened
Cayman S
owner who has only owned the car for 2 months and found out the engine is shot. And is looking for a ray of hope.
Sorry to have disturbed you. I will leave it be at this point.
I missed the other posts but agree with others that you don't need to repeat them and in fact that is a violation of forum rules. That being said, with regard to your car the first thing to do is to look at the side of the engine block, you may have to clean off any grime that has built up since 2006 and see if you have a blue paint engine. If you do, it simply means that your engine is one of a large batch of engines that have an extremely high failure rate. Bore scoring is one of the symptoms of these engines, rod failure through lack of oil pressure causing the bearings to fail is another, along with cracked piston tops. If you plug is fouled that you are getting oil into the combustion chamber. You need to pull all the plugs and inspect them all to see if it is a certain cylinder or all cylinders. If it is all cylinders then you are like to have a bad AOS (air oil separator) that is letting oil by and into the intake and thus into all cylinders. If it is just one cylinder then that cylinder is likely so badly scored that oil is getting by the rings and into the combustion chamber.
If most of your scoring happened in the past and little to no new scoring is taking place, then a current oil analysis may not reveal anything and that's likely what is happening here. If you were getting lots of new scoring at 83K miles then your engine would likely have already failed. Scoring may also happen at certain times, for example after a car has sat for a long period of time and fired up on a cold day, etc.
The net-net is that your engine is just like 99.9% of all 2006 Cayman S engines in that it has both design and construction flaws that lead to early failures. Porsche will never admit it and short of a lawsuit you wouldn't ever get any satisfaction from Porsche, and given that it is now 14+ years after Porsche created these engines Porsche likely is under no duty to preserve information about their own internal testing, rates of failure reported, etc. so any case would have to be made from external sources and you are talking far far far more in legal fees that your car would ever be worth.
So where does that leave you? You could perform expensive engine word to fix up your current engine to try to get more life out of it, to stop or minimize problems like bore scoring, but do you really want to sink $$$$ into a 14 year old car? My recommendation is always to sell/trade your car in on something newer that doesn't have these known problems unless there is an overriding reason for you to keep this particular car (sentimental, whatever...) If you want another Cayman make sure you get one with a 9A1 motor in it, or go to a newer platform like the 981 instead of the 987.
(Sometimes people ask "Can't I just swap a 9A1 motor into my older Cayman? - The answer is physically YES, but at great $$$ expense because the wiring harness is different, the computer is different as are some other control modules so the sheer cost of doing so is far far greater than simply buying another car so it doesn't really make an engine swap a viable option unless you have unlimited funds and time and just want to do it.)
before I bought mine, I already have this in mind, since we all know this can happen to all these 3.4-3.8 motors.
1. sell the car cheap, 10K state issues
2. install another motor, new rebuild motor, 15K, enjoy it for another 10-15yrs (no more scoring issues)
yes either way is 10-15k decision, I decided on 987.1 since is around 10-15K less than 987.2 so that is saved now for the future failures, it may or may not happen. just m2c.... yeah that sucks since you didn't know about it when you bought it.
