Driving on the autobahn seems to have upset my 991.2
Discussion
I’ve driven around lots of Europe in my car but until a couple of days ago I had never even visited Germany let alone drive on the Autobahn.
I had modest ambitions of getting to 250kph if conditions were right but wanted to get the feel of it before having a go.
I did a fair few miles at 180kph to 200kph (and was overtaken by all manner of vehicle) but - couple of things happened that curtailed my enthusiasm.
First was a tyre pressure warning on my left rear. It loses about 6 psi and then stays at 36 indicated on the display. I pumping up a bit but a few hours later will drop again but doesn’t get any lower.
I also got a ‘minimum all level’ information pop up and then a few miles later a warning for oil being below the minimum level. Never had this before but pulled over and added a quarter of a bottle without spilling an drop and set off again.
I noticed quite a lot of white smoke coming out the rear as soon as I rejoined the autobahn so I sat at about 90kmp for a miles then resumed normal driving once the smoke had gone. It hasn’t returning. Problem or is this normal after topping up?
I had modest ambitions of getting to 250kph if conditions were right but wanted to get the feel of it before having a go.
I did a fair few miles at 180kph to 200kph (and was overtaken by all manner of vehicle) but - couple of things happened that curtailed my enthusiasm.
First was a tyre pressure warning on my left rear. It loses about 6 psi and then stays at 36 indicated on the display. I pumping up a bit but a few hours later will drop again but doesn’t get any lower.
I also got a ‘minimum all level’ information pop up and then a few miles later a warning for oil being below the minimum level. Never had this before but pulled over and added a quarter of a bottle without spilling an drop and set off again.
I noticed quite a lot of white smoke coming out the rear as soon as I rejoined the autobahn so I sat at about 90kmp for a miles then resumed normal driving once the smoke had gone. It hasn’t returning. Problem or is this normal after topping up?
You don't say model, but I am assuming this is a twin turbo Carrera?
I have seen a couple of these let got on track days. One of them was ahead of me on sigbting laps at Silverstone. It was smoking, more from one side than other, on overrun, particularly at the end ofHangar Straight and on the second lap there were bright orange flames. The owner would not have seen this, so I told him and he said there were some warnings on dash and he had to get the car recovered from the pits.
I have seen a couple of these let got on track days. One of them was ahead of me on sigbting laps at Silverstone. It was smoking, more from one side than other, on overrun, particularly at the end ofHangar Straight and on the second lap there were bright orange flames. The owner would not have seen this, so I told him and he said there were some warnings on dash and he had to get the car recovered from the pits.
Digga said:
You don't say model, but I am assuming this is a twin turbo Carrera?
I have seen a couple of these let got on track days. One of them was ahead of me on sigbting laps at Silverstone. It was smoking, more from one side than other, on overrun, particularly at the end ofHangar Straight and on the second lap there were bright orange flames. The owner would not have seen this, so I told him and he said there were some warnings on dash and he had to get the car recovered from the pits.
It’s a 991.2 GTS.I have seen a couple of these let got on track days. One of them was ahead of me on sigbting laps at Silverstone. It was smoking, more from one side than other, on overrun, particularly at the end ofHangar Straight and on the second lap there were bright orange flames. The owner would not have seen this, so I told him and he said there were some warnings on dash and he had to get the car recovered from the pits.
I’ve not had any warning light other than for tire pressure and low oil.
Being so far from home just makes it a bit more of a worry.
Not to be a total worry but that could potentially be a Turbo issue. Load of smoke but still useable sounds awfully similar to what happened to me. Only when stood for a while did I see a small impression of the Exxon Valdez on the concrete.
Get it looked at before driving again would be my view.
Get it looked at before driving again would be my view.
Hi OP,
I hope it is not this, but just in case have a look at this thread and see if it gives you any useful information to jump on a potential problem before it becomes a big issue. All the best.
https://www.pistonheads.com/gassing/topic.asp?h=0&...
I hope it is not this, but just in case have a look at this thread and see if it gives you any useful information to jump on a potential problem before it becomes a big issue. All the best.
https://www.pistonheads.com/gassing/topic.asp?h=0&...
I was really hoping to hear that white smoke always happens when you top up with oil.
I was aware of the turbo issues with the 991.2 when I got the car so have a Porsche warranty for mostly that reason.
I’ve never had white smoke before, only when I topped up the oil, and then it stopped after a couple of miles. I tried all sorts of driving after the smoke had cleared to see if it would happen again but it didn’t.
We’ll see what tomorrow brings… Innsbruck to Ljubljana.
I was aware of the turbo issues with the 991.2 when I got the car so have a Porsche warranty for mostly that reason.
I’ve never had white smoke before, only when I topped up the oil, and then it stopped after a couple of miles. I tried all sorts of driving after the smoke had cleared to see if it would happen again but it didn’t.
We’ll see what tomorrow brings… Innsbruck to Ljubljana.
Ken_Code said:
200kph is likely going to be less than 200bhp to maintain, so it’s not going to have particularly stressed the engine.
No doubt. Revs weren’t high, car felt okay. I hadn’t driven in anger since last year so maybe that’s it. Or maybe I’m clutching at straws. I don’t know a great deal about engines & turbos but am I right to think that if there is no pressure showing on the turbo display then they’re not being used? For example, cruising at 100kph, wouldn’t use the turbos?
DeuceDeuce said:
No doubt. Revs weren’t high, car felt okay. I hadn’t driven in anger since last year so maybe that’s it. Or maybe I’m clutching at straws.
I don’t know a great deal about engines & turbos but am I right to think that if there is no pressure showing on the turbo display then they’re not being used? For example, cruising at 100kph, wouldn’t use the turbos?
I don’t know if they are literally stationary at that speed, but you’ve used the car far less hard than a sharp overtake does.I don’t know a great deal about engines & turbos but am I right to think that if there is no pressure showing on the turbo display then they’re not being used? For example, cruising at 100kph, wouldn’t use the turbos?
If something’s let go I don’t think it’s anything to do with the mid-speed cruise.
I hope all it was was a glitchy warning followed by topping up with a bit too much oil.
bosshog said:
High oil usage and white smoke on a 991.2 usually means the oil line/turbo issue ( I speak from experience)
I bet he’s right.Same for me. (991.2 gts). Porsche (inc UK HQ) were utterly rubbish for 18 months as it only happened once above 80/90mph and they couldn’t test/refused to drive over 70mph. The released oil then smoked badly on start up until burnt off.
If this is the problem and if you have Porsche warranty, I wouldn’t worry. They’ll eventually replace both turbo.
I wouldn’t worry too much about carrying on your trip but if you are worried, assume you have Porsche recovery with warranty?
Pm me if you want to know 3x Porsche dealers who I wouldn’t go to for diagnosis.
Operational range for turbos is circa 10,000 rpm. So even if not actually providing boost, they are spinning way faster than the engine. They need constant, high pressure oil feed to the axle.
IMHO big turbos not suited to daily driving. If the car has had a good thrash, it should idle before shutoff.
The most common issue is the oil seals wear and then feed oil into either or both the compressor and exhaust side of the turbines.
I had an Isuzu Trooper let go with zero warning - just the white fog that suddenly appeared behind me on the M42. I managed, using foot brake, handbrake and dropping clutch with 5th gear, to shall the engine, as it wouldn’t switch off. Spoke to a customer who’d had the same with a Cat D6 dozer and they couldn’t do anything other than watch it spin until it threw a conrod out of the block.
IMHO big turbos not suited to daily driving. If the car has had a good thrash, it should idle before shutoff.
The most common issue is the oil seals wear and then feed oil into either or both the compressor and exhaust side of the turbines.
I had an Isuzu Trooper let go with zero warning - just the white fog that suddenly appeared behind me on the M42. I managed, using foot brake, handbrake and dropping clutch with 5th gear, to shall the engine, as it wouldn’t switch off. Spoke to a customer who’d had the same with a Cat D6 dozer and they couldn’t do anything other than watch it spin until it threw a conrod out of the block.
Early visit to Porsche Innsbruck has Identified the tyre pressure problem at least.
Struggled enough with the language to explain what was happening with ture pressure so not getting into the oil/smokenissuee. Haven’t had any further smoke and have Porsche recovery so will continue my journey.
Edit to add: There’s no a single electric car for sale at Porsche Innesbruck. Maybe they sold them all.
Struggled enough with the language to explain what was happening with ture pressure so not getting into the oil/smokenissuee. Haven’t had any further smoke and have Porsche recovery so will continue my journey.
Edit to add: There’s no a single electric car for sale at Porsche Innesbruck. Maybe they sold them all.
Edited by DeuceDeuce on Tuesday 14th May 07:58
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