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[solidgold]

hi

i have  a m reg  omega 2.5 td.cd diesel auto bmw engine and have been reading comments that the engine is rubbish and the cam chain could be a problem.

any comments welcomed

[markey mark]

if you look after it and change oil every 3k max it will last forever matey ! they are are a very good engine when chipped and looked after !!  

[TheBoy]

hi

i have  a m reg  omega 2.5 td.cd diesel auto bmw engine and have been reading comments that the engine is rubbish and the cam chain could be a problem.

any comments welcomed

Apologies if you've read one of my posts  

If I said it was rubbish, I apologise, as thats unfair.

Its not a bad engine, just hugely overrated, mainly because it has BMW written on it (and for some bizarre reason, people think thats good  :-/).

It does have a ridiculously short service interval of 4.5k.  Remember, that is MAX, so really needs servicing every 3k (oil, anyway).  Failure to do this will result in a couple of major problems - blocked oiljets (which cause overheating) and excessive chain wear.

Replacing the chains on this engine is not economically viable.  Due to the silly german who designed it being a prat, you have to remove the head and the sump to change a service item like the chain  

Allowing the engine to overheat (eg, blocked oilways, or the engine's other favourite - silted radiator), leads to the age old BMW trouble of cracked heads. Or at best, HG failure (but these heads cannot be skimmed according to BMW).  New heads not economically viable.

Another design fault is the waterpump.  BMW, in their wisdom, though it would be a laugh to use a waterpump with cheap plastic impellors.  It is very common for the pump to shed these, causing immediate overheating.  Even if you catch it in time, the shed impellors block the coolant ways.

And what stupid designer put a viscous fan on.  Take it off and bin it.  In this country, it most definately is not needed.


Now, specifically in the Omega, it is detuned. This has a double whammy of less performance, and worse economy.  If you have a manual gearbox, get it chipped back to BMW standard.



As said, not a bad engine, just some ill conceived designs on it.  Many repairs can be uneconomical.

[FRE07962128]

hi

i have  a m reg  omega 2.5 td.cd diesel auto bmw engine and have been reading comments that the engine is rubbish and the cam chain could be a problem.

any comments welcomed

Apologies if you've read one of my posts  

If I said it was rubbish, I apologise, as thats unfair.

Its not a bad engine, just hugely overrated, mainly because it has BMW written on it (and for some bizarre reason, people think thats good  :-/).

It does have a ridiculously short service interval of 4.5k.  Remember, that is MAX, so really needs servicing every 3k (oil, anyway).  Failure to do this will result in a couple of major problems - blocked oiljets (which cause overheating) and excessive chain wear.

Replacing the chains on this engine is not economically viable.  Due to the silly german who designed it being a prat, you have to remove the head and the sump to change a service item like the chain  

Allowing the engine to overheat (eg, blocked oilways, or the engine's other favourite - silted radiator), leads to the age old BMW trouble of cracked heads. Or at best, HG failure (but these heads cannot be skimmed according to BMW).  New heads not economically viable.

Another design fault is the waterpump.  BMW, in their wisdom, though it would be a laugh to use a waterpump with cheap plastic impellors.  It is very common for the pump to shed these, causing immediate overheating.  Even if you catch it in time, the shed impellors block the coolant ways.

And what stupid designer put a viscous fan on.  Take it off and bin it.  In this country, it most definately is not needed.


Now, specifically in the Omega, it is detuned. This has a double whammy of less performance, and worse economy.  If you have a manual gearbox, get it chipped back to BMW standard.



As said, not a bad engine, just some ill conceived designs on it.  Many repairs can be uneconomical.

After reading that TB your original comment, if you made it, of "rubbish" engine could not have been far off the truth!   Who wants an engine with so many critical design flaws and practical failings like 4k servicing?!  

Now I think I know why a 1999 2.5 TD Estate at a car dealership is still sitting on the forecourt after 9 months and is now £1,500, not the original £2,450!