[xenon]

Carlos - what Roofer means is that to stop a diesel you stop the fuel - then the engine stops so than can be no bore wash as all the fuel is burned which is why the engine stops. On a petrol engine the ignition is switched off meaning the engine can continue to rotate and draw in unburned fuel (in the old days). But with diesel you actually halt the fuel supply which is why the engine stops in the first place. Hence no bore wash.

[Carrera RSR]

Originally Posted by xenon

Carlos - what Roofer means is that to stop a diesel you stop the fuel - then the engine stops so than can be no bore wash as all the fuel is burned which is why the engine stops. On a petrol engine the ignition is switched off meaning the engine can continue to rotate and draw in unburned fuel (in the old days). But with diesel you actually halt the fuel supply which is why the engine stops in the first place. Hence no bore wash.

Hence this inclusion in Wikipedia

Another rare disadvantage of diesel engines compared to petrol/gasoline engines is the possibility of runaway failure. Since diesel engines do not require spark ignition, they can sustain operation as long as diesel fuel is supplied. Fuel is typically supplied via a fuel pump. If the pump breaks down in an "open" position, the supply of fuel will be unrestricted and the engine will runaway and risk terminal failure.

Which means the only way to stop your diesel engine is to stop supply of fuel. Therefore no borewash is possible.

[RichardM]

Originally Posted by dxb335d

I have two keys mate.

Can i start it with one, get out and lock it with the other?

I wouldn't do that mate, if you leave it running with the keys in the ignition and its stolen your insurance company won't pay out.

At least with removing the key you can show you had both keys so it was stolen without the keys.

[roofer]

Just take the metal key from the fob, start it and lock it...NEXT!

[Dave_3]

Carlos, bore washing ONLY occurs when you have excessive unburnt fuel (petrol) that washes away any oil in the bores/piston rings when the engine is still turning over.

In a petrol you may get this if you crank repeatedly on a full choke without a spark, or have a fouled plug or two - but this is hardly something that afflicts modern petrol cars. And not even you could foul the plugs on your 335D

I doubt it would even be possible to run a diesel without an ignition stroke (as others have said), in addition the Engine Management will control your starter motor and would not allow you to chug away flooding the bores with un-ignited diesel. Unburnt diesel/petrol and catalysts/DPFs are a BAD mix - why lambda sensors are used.

And diesel would not wash the oil from the bores as quickly as petrol would even if all of the above was not true.

Don't worry about it.

D.

[misterS3]

Re: The starting, stopping, taking key out and starting again process.

I've only tried this once.
But i don't think you can do this first thing in the morning.
I think you have to either drive for a distance or have the engine running for a certain amount of time before you can start the car without a key.

I could be wrong - will check again later/tomorrow.

[jonsteele]

Originally Posted by misterS3

Re: The starting, stopping, taking key out and starting again process.

I've only tried this once.
But i don't think you can do this first thing in the morning.
I think you have to either drive for a distance or have the engine running for a certain amount of time before you can start the car without a key.

I could be wrong - will check again later/tomorrow.

I did it this morning to defrost the car. Key in, started the car, ran for a couple of seconds, stopped, took key out and restarted without the key. Locked up and returned to the warmth of my house.

This thread was the first I knew about this feature - every day's a school day! Very useful and will now gets lots of use.

[AlanQS]

Originally Posted by DXB335D

yes you would. Why do you think then you let it idle before shut down.

I understood that you should let the car idle for a few moments if you had been doing some spirited driving to allow the turbo to spool back down - so it's to protect the turbo.

Now, if you have comfort access, get in, start the car, get out, and lock the door.

Simple

[biscuits]

Originally Posted by roofer

Just take the metal key from the fob, start it and lock it...NEXT!

This is what both my wife and I do. Get in start the car, press the central locking button (locking the doors), open the drivers door (which doesn't unlock the boot and other doors) and manualy lock the door with the key (if you can remember how to do this!).

I think this is perfectly safe enough for a 5 minute warm up while you eat your porridge.

The other way to do it is get the optional Universal Remote and AUX heater, then you have a seperate remote to warm your car up. Used this in Finland on a Volvo. While in Finland I also used an electric heater. Car plugs into a socket at your hom ewith a timer. Basicaly you have to have an electric fan heater in the passenger footwell installed, but your car is toasty warm and the windows clear as soon as you get in.

[willhollin]

All good until someone smashes the window and jumps in.

[Serjames]

wouldn't worry about spooling the turbo down... that happens about 3 second after you take the foot off the gas. What CAN happen on older turbo cars is that they get VERY hot and when you shut the power off without cooling them the oil stops flowing and can coke up.

Hence knackered turbo... This is why if you ever want to race a GTr34 running big turbo's you just need to stop to chat for him at the lights for a bit he'll start getting edgy because every instinct in his brain is telling him to start the turbo timer and open the bonnet... lol

Our cars run a water based coolant around the turbos when the engine shuts off... you'd have to seriously abuse them to coke them up !

SJ

[M3-FAST]

Originally Posted by misterS3

But i don't think you can do this first thing in the morning.
I think you have to either drive for a distance or have the engine running for a certain amount of time before you can start the car without a key.

I could be wrong - will check again later/tomorrow.

You can do it first thing, I used to do it all the time, however have only just got the car back from the dealers after a 'reprogram' and when I tried to do it this morning it would not re-start after taking the key out?

I tried it 3 times, and in the end gave up. Meant to try again tonight after work but forgot! Also lost my 3 winks on the indicators and can't bloody remember how to re-enable that either

[greatbm]

Originally Posted by redE93cab

You can do it first thing, I used to do it all the time, however have only just got the car back from the dealers after a 'reprogram' and when I tried to do it this morning it would not re-start after taking the key out?

I tried it 3 times, and in the end gave up. Meant to try again tonight after work but forgot! Also lost my 3 winks on the indicators and can't bloody remember how to re-enable that either

I've had a number of re-progs and can still do it.

[misterS3]

Originally Posted by redE93cab

You can do it first thing, I used to do it all the time, however have only just got the car back from the dealers after a 'reprogram' and when I tried to do it this morning it would not re-start after taking the key out?

I tried it 3 times, and in the end gave up. Meant to try again tonight after work but forgot! Also lost my 3 winks on the indicators and can't bloody remember how to re-enable that either

Hmmm strange...

I know mine does start without the key. eg when i've arrived at work, i've tried it and it works.

Will have a play sometime over the weekend re: the first thing in the morning thing

[greatbm]

Originally Posted by greatbm

I've had a number of re-progs and can still do it.

P.S. Once you have opened the door this function no longer works.

[greatbm]

Originally Posted by redE93cab

You can do it first thing, I used to do it all the time, however have only just got the car back from the dealers after a 'reprogram' and when I tried to do it this morning it would not re-start after taking the key out?

I tried it 3 times, and in the end gave up. Meant to try again tonight after work but forgot! Also lost my 3 winks on the indicators and can't bloody remember how to re-enable that either

Once you re-prog you usually have to reset all features i.e clock, radio, seat settings etc.

[M3-FAST]

Originally Posted by greatbm

Once you re-prog you usually have to reset all features i.e clock, radio, seat settings etc.

mmmmm....tell me about it!