Cayenne Engine Problems?
Discussion
T'wife has decided she'd like a 4x4 so I've been to look at a few Cayennes, in particular the V8.
The favourite had a bit of an engine rattle which sounded like a sticking tappet but following advice from John at Porsche-euro near Barnsley, it is likely to be a bit more serious than that. Research has now told me that it is probably piston slap due to the bore wearing out and it is not an uncommon fault. Engine is basically junk requiring a new block and pistons to cure it.
The big question then is, how common is this fault? It has sort of put me off getting one as I'm scared of paying 10k out for a car which will be worth scrap if the engine goes. I'm quite confident that it's not going to be a Cayenne wide fault or Porsche would be doing something about it. Or would they?
Any advice or stats gratefully accepted.
The favourite had a bit of an engine rattle which sounded like a sticking tappet but following advice from John at Porsche-euro near Barnsley, it is likely to be a bit more serious than that. Research has now told me that it is probably piston slap due to the bore wearing out and it is not an uncommon fault. Engine is basically junk requiring a new block and pistons to cure it.
The big question then is, how common is this fault? It has sort of put me off getting one as I'm scared of paying 10k out for a car which will be worth scrap if the engine goes. I'm quite confident that it's not going to be a Cayenne wide fault or Porsche would be doing something about it. Or would they?
Any advice or stats gratefully accepted.
Engine rattle could be down to water pump failure (common) or Adjustment of Inlet Camshaft in relation to Crankshaft, Bank 1 or Bank 2. Are their any codes appearing on the diagnostic? (P0011 Bank 1 or P0021 Bank 2). 9 times out of 10 it's the Actuator and seal (Not catastrophic - about 400 - 500 notes) if you get both warnings possible dirt in oil, which if recently serviced would be worrying or the oil pump.
5678 said:
What about other costs? Is the turbo much the same as the V8? Looking at a v6 or v8 for the wife here too.
Can't comment on the Turbo, but we've had the V8 S for nearly 1.5 years and haven't had to spend any money on maintenance other than an MOT. Tyres and service need doing soon and i'm considering going down the independant route rather than main dealer due to their cost of service vs the value of the vehicle.It's a lot of car for the money! Get one with Air suspension and the Bose sound system.
BrewsterBear said:
This problem only affects the N/A V8. The 3.2 V6 and Turbo models are not affected. What % of V8 cars will grenade their engine is subjective depending on where you read. I bought the Turbo to avoid this problem. There very little in it from a fuel economy perspective.
What problem? And why does it not happen when you strap a turbo to the same V8 engine?thegoose said:
BrewsterBear said:
This problem only affects the N/A V8. The 3.2 V6 and Turbo models are not affected. What % of V8 cars will grenade their engine is subjective depending on where you read. I bought the Turbo to avoid this problem. There very little in it from a fuel economy perspective.
What problem? And why does it not happen when you strap a turbo to the same V8 engine?Younez said:
widely reported?
It must be quite a well known fault as within 2 days of looking for a car I know all about it. I don't think it's been on Top Gear yet though!It's all to do with the material the block is made of and the coating in the bores. Without getting too technical, it seems the coating wears off the block for some reason and the piston rings then eat into the bore.
Greensleeves said:
Younez said:
widely reported?
It must be quite a well known fault as within 2 days of looking for a car I know all about it. I don't think it's been on Top Gear yet though!It's all to do with the material the block is made of and the coating in the bores. Without getting too technical, it seems the coating wears off the block for some reason and the piston rings then eat into the bore.
I owned one for many years without issue.
If you are genuinely concerned get one with Porsche warranty and inspected.
Edited by Younez on Monday 28th October 13:50
they are great cars. we look after quite a few these days, a couple are well over 100k miles with no problems in this department
ive seen 3 v8s with scored bores, they do have a tappety noise on the affected cylinders.
the last one we did a couple of months ago was brought new by our customer from opc in 2003 serviced by them ever since to keep the stamps in service book. at 36k miles it went in for a service, came back and next day had a misfire. they diagnosed as scored bores, we look after this servicing aside and his other porsches so came to us for a 2nd opinion. because of the big opc quote, we fitted a used engine and off he went. the engine we took out had scores badly on 1 of the cylinders but had starting to score all others. he asked opc if they could help but got no help, so let us do the job after they left a sore taste in his mouth.
at first it was intermittent and he sponsors my race car so said use it for a few days instead of charging him labour to test drive for hours on end or bring it back and forth.
on the worst cylinder the plug would wet up after 25 miles or so when i took it on a long drive. slight smoke on overrun but not a lot considering.
worth lookin out for if you are buying one, as i said most are ok though so good luck i suppose!
ive seen 3 v8s with scored bores, they do have a tappety noise on the affected cylinders.
the last one we did a couple of months ago was brought new by our customer from opc in 2003 serviced by them ever since to keep the stamps in service book. at 36k miles it went in for a service, came back and next day had a misfire. they diagnosed as scored bores, we look after this servicing aside and his other porsches so came to us for a 2nd opinion. because of the big opc quote, we fitted a used engine and off he went. the engine we took out had scores badly on 1 of the cylinders but had starting to score all others. he asked opc if they could help but got no help, so let us do the job after they left a sore taste in his mouth.
at first it was intermittent and he sponsors my race car so said use it for a few days instead of charging him labour to test drive for hours on end or bring it back and forth.
on the worst cylinder the plug would wet up after 25 miles or so when i took it on a long drive. slight smoke on overrun but not a lot considering.
worth lookin out for if you are buying one, as i said most are ok though so good luck i suppose!
I have owned a 2008 Cayenne S which I bought brand new. Drove it for 231,000 KM and has been fully maintained at the local dealership. Out of the blue, the engine started to produce noise which was recognized as piston slapping by the service manager. Upon, further inspection using an endoscope, they came back with scored bores. Very strange in my book for a fully maintained vehicle? So I guess that this is not a so uncommon fault. My friend owns a Crown Victoria which has an engine that is running fine and has been driven for 400,000 KM. New Engine is extremely expensive, and overhauling the engine is also expensive. Anyone know where, one could get a good used engine?? Thanks
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