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Car Forum / BMW Cars / May 2008

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clogged fuel filter causes engine to overheat?

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Borked Pseudo Mailed - 12 May 2008 03:46 GMT
My wife worked for 6 months as a car detailer in a BMW Autohaus.
She says while she was there, there had two cars in the workshop
that overheated because the fuel filter was dirty.
I never heard this before.  I reckon the mechanics were pulling
her leg (because she is umm the dumb blonde).
I don't see how too little fuel would cook an engine.
Or is this a trait of the Bavarian engines?
Sylvia Else - 12 May 2008 05:02 GMT
> My wife worked for 6 months as a car detailer in a BMW Autohaus.
> She says while she was there, there had two cars in the workshop
[quoted text clipped - 3 lines]
> I don't see how too little fuel would cook an engine.
> Or is this a trait of the Bavarian engines?

Make it run too lean, even with injectors?

Sylvia.
Jeßus - 12 May 2008 21:24 GMT
>> My wife worked for 6 months as a car detailer in a BMW Autohaus.
>> She says while she was there, there had two cars in the workshop
[quoted text clipped - 5 lines]
>
> Make it run too lean, even with injectors?

That seems to be the only possibility and thats what they probably
meant? And you can most certainly run too lean with injectors...
Noddy - 13 May 2008 00:13 GMT
> That seems to be the only possibility and thats what they probably meant?
> And you can most certainly run too lean with injectors...

You can, but to the point where it cooks the engine is highly debatable. The
engine would most likely fail to run long before it got anywhere near that
stage.

--
Regards,
Noddy.
Klompmeester - 12 May 2008 23:59 GMT
> My wife worked for 6 months as a car detailer in a BMW Autohaus.
> She says while she was there, there had two cars in the workshop
[quoted text clipped - 3 lines]
> I don't see how too little fuel would cook an engine.
> Or is this a trait of the Bavarian engines?

If the clogged fuel filter caused a drop in fuel pressure and leaning out it
is possible since running lean increases combustion temperatures.
TPr - 14 May 2008 23:36 GMT
beamers have a lovely habit of falling to pieces the day after the factory
warranty runs out, hence why you can buy a near new 7 series that cost over
200k new for the same price as an Australian car. And you'd be nuts to do so
too, unless you were a competent mechanic.

| My wife worked for 6 months as a car detailer in a BMW Autohaus.
| She says while she was there, there had two cars in the workshop
[quoted text clipped - 3 lines]
| I don't see how too little fuel would cook an engine.
| Or is this a trait of the Bavarian engines?

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