cold diesel engine and accelerating question

peacemf · #1 09-25-2008, 04:55 PM

In the winter i know it takes a while longer for the engine to heat up to optimal temp.

Normally i dont let the engine rev more than 2k RPM till the engine is nice and warm...

If i do try to pass the 2k RPM mark the car basically cant do it..

I was wondering do petrols have this problem too?

Is this a common issue with diesel cars and do the newer models (the face lifted e53 and e70) have this too?

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Fraser · #2 09-25-2008, 07:49 PM

I have no such problem with my diesel. Overnight winter temps here regularly below zero degrees C. I suggest that you have a problem

blueagle · #3 09-25-2008, 08:21 PM

We have no winter in the Philippines. I usually warm up my diesel engine a few minutes until it reaches normal temperature. Keep rpm around 2k .

Laurence · #4 09-26-2008, 08:20 AM

It sounds like you have a problem. My diesel would run right up to the rev limiter if I let it from cold.
If you can't get past 2000 RPM, that sounds like a proble with the turbo or something related to that area of the engine (i.e air intake). I'm not sure how/why the problem would correct itslef when warm but it would be worth having it checked out.

peacemf · #5 09-26-2008, 02:13 PM

no it can rev more than 200o RPM

its just that you get loads of smoke and the car just doesnt go....its like its choking

but once warm its fine

X5Sport · #6 09-26-2008, 02:41 PM

Nope don't get that problem with my '05 Auto. Still sounds like there's something wrong.

Diesels do smoke a little but if you're getting a lot of smoke when cold to me that's worth letting a dealer or diesel specialist have a look at it. Petrol engines will also smoke heavily when cold if a lot of throttle is applied because the mixture should be running somewhat rich until the engine warms up.

What's the fuel economy like?

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