neanicu

Only one side now that I think about it... I'm afraid there's a possibility the head gasket went on that bank,or could be AOS... Scored cylinder? Who knows... I just remember he last mentioned he took it for a drive and it started running really rough...
Point is,I wouldn't drive it anymore,not even start it,he could be causing more damage that way...

myw

so what was the consensus from the mechanic?

Edgy01

Have you ever owned air-cooled 911s? That's fairly typical for those versions when they sit a long time in cold weather (re: seals contract and oil pools).

If it keeps up the AOL separator(s) sound like a possibility.

TheLooch

Hi All,

Car is at dealership for service... they are taking the engine out as we speak ($3200 OUCH!) to do a check... Sounds like you are all correct... either AOS or Scored Piston... Will keep you posted

myw

can they not borroscope the car to check for scored cylinders without taking the engine out of the car?

utkinpol

OMG. They are taking out motor to replace AOS? And charging $3200 for that 'diagnostic' alone?

That is why no one should use dealers for any serious work. Ever.

user 72902

I thought the same thing but maybe they scoped the cylinders (saw the damage) and already know the engine needs to be rebuilt????

BogdanR

Autowerks in Woodbridge On, charges approx $1800 to replace an AOS, and $380 or so for a compression/ scope test...

TheLooch is getting raped here... unless they already know it's a scored cylinder...

myw

lol you guys make me feel better.

i was scratching my head wondering if/why the engine needed to be dropped based on aos/borroscope.

alexb76

Both sides definitely, but maybe more from the drivers side as more of it burnt away.

USMC_DS1

Assuming that we're still looking at a 997.1 car. Driver side smoke is indicative of issues with bank 2 on the engine. Bank 2 is on the passenger side and gets the least cooling as the coolant is routed from bank 1(heats up) then to bank 2. Therefore bank 2 is more likely to suffer from scored cylinder liners. Note that the exhaust from bank 2(passenger side) is routed to the opposite driver side exhaust pipes. Here's a detailed tech write up re this potential issue. http://hartech.org/docs/buyers%20gui...20part%205.pdf Of course, don't panic and have it bore scoped by a qualified p-tech. GL and let us know the outcome.

FWIW, I believe the bore scope should only require removal of the spark plugs to get a scope into the cylinder chamber. Then the engine should be cranked over to view all cylinders completely. So I agree with others that dropping the engine is premature especially if this is an out of warranty expense.

TheLooch

Anyone know of another reputable (non-dealership) place in NJ for Porsche service??

Fahrer

Here are a couple companies I have seen in Porscheforus mag....

I have not personally had service done at either.

www.pwr-tech.com

www.shadetreegarage.com

tbrom

I've been reading this thread and feeling for you Looch - I can't imagine what you must be thinking. I hope it all turns out to be the AOS or something other than "scoring". Good luck to you! All the best!

Edgy01

Several years ago Porsche did a courtesy borescope job on my engine in order to get to the bottom of what I consider excessive oil usage. They never dropped the engine to do this. They go in with a borescope after they pull out the spark plugs and peek inside.

It sounds more like an AOS. That's more common.