Flooded engine (N52)

Deepseaskateboard

Deepseaskateboard

Senior member
Hello, recently picked up a Z4 and after driving it a while it stopped.

I posted some error codes in the problems forum, but the garage / dealer is saying all it was, was a flooded engine.

I don't see how the engine can for should flood...
This is my first BMW / sports car... Upgrading from fiesta.

Fiesta never gave me any issues... Do these cars have to be driven differently or is there something up with it?

Has anyone ever flooded their engine here?

:/
 
sounds fishy... im no expert on these motors but you certainly shouldnt be able to flood any modern engine just by driving it
 
I'm not quite sure how a car with an ECU can possibly flood...
If it's water you have got serious issues. I think the best bet is to take out a few plugs and see; or get a second opinion. How recently did you get it?
 
If you got it from the trade then you have pretty strong consumer rights, did you take it to them with the issue? If not, inform them ASAP, they're ultimately going to be responsible for the fix but you might have to put up a fight.
 
Yeah it's a trade purchase, it also has a warranty.

It's been looked at under warranty at the moment and they are road testing it all this week.

I'll get it back at the weekend, I can. Give it a thorough check then. If there is anything wrong with it, it's covered by the warranty, and my consumer rights.
 
Hello

I have had a injected engine flood before (with fuel) I had this issue with a L98 1988 corvette, basically uses a small block V8 with Bosch fuel injection.

The issue can be a leaky or intermittent sticky injector. flooding with full pressure ... Or in my case I had a fault on the internal output transistor that would drive the injector even though the ECU was telling to turn the injector off.

The result was a stalled engine smelling of petrol, you could start it and the fault would return totally randomly .. In the end I changed all the driver output transistors and all was fine in the end.

But saying this on a modern multi sequential injection engine I thought you would have just a misfire on one of the cylinders from what I have described above, Unless the ECU drive pack was faulty driving all injectors, and then I would have thought you would have multiple failure codes being generated

regards
 
jamesbond said:
But saying this on a modern multi sequential injection engine I thought you would have just a misfire on one of the cylinders from what I have described above, Unless the ECU drive pack was faulty driving all injectors, and then I would have thought you would have multiple failure codes being generated

regards
Click to expand...

It did generate a few fault codes relating to valvetronic:


2a43 - valvetronic; termical overload protection (intermittent)

2a41 - valvetronic; electrical overload protection
(Intermittent)

2a39 - valvetronic, adjustment range (permanent)

Not really any idea what they mean tho.
 
That's not flooded, it's got valvetronic issues-it sounds as though they don't know what they're talking about!
Rob
 
I have a fault code reader.
When I collect it on Saturday I'll give it a diagnostic and make a few manual checks.

I found an interesting post about oil getting into the solenoid sensor on the engine... It's apparently an expensive fix, but that's what warranties are for! :)
 
That's what I had replaced on mine a couple of years back, the eccentric shaft sensor, wasn't covered under warranty either £865 of a job! Yikes!
 
Is it a small garage or a main dealer you got it from? You can bet your bottom dollar it's not covered - as I had my rocker cover gasket leaking on mine, apparently because it hasn't completely failed it wasn't covered - most small garages warranty's aren't worth the paper they're written on - the one I had said it had a max contribution of £150!!
 
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