Quantcast
Let us know what life is like with YOUR CAR And you could win one of three ipads | No thanks
Ask a Question

What's your question? Search here

Swirl flap design fault on BMW 730d
Last year at 70,000 careful miles several swirl-flaps came adrift on my BMW 730d and one went through the engine into the turbo.

Inlet manifold and turbo replaced, one set of valves and piston changed. BMW paid for parts and cost to me £2.8k. This appears to be a design fault. Car appeares to run fine now, but I have lost confidence in the engineering. Is there anything that can been done, driving or maintenance, to prevent a recurrence?

Asked on 24 January 2012 by Mike WB

Answered by Honest John
Yes, it is a design fault affecting engines from about 2002 to about 2004. Should have been rectified as part of the fix as does not seem to occur with post 2004 engines.
Dear Honest John,

Please help me choose my next car. I would like it to have:
    Select a few terms below
Similar questions
My car is a 2004/54 BMW X5 diesel Sport auto, facelift. I bought it seven years ago at eighteen months old. Apart from a new starter motor the car as been...
Your Telegraph column of 1st May prompted me to e-mail BMW to question whether the swirls flaps on my 2003 BMW530D engine was a known weakness as reported...
Does swirl flap failure affect the 525d engine as regularly as it affects the 2.0-litre and 3.0-litre litre engines?
Related links
Looking for a garage you can trust? Honest John's Good Garage Guide has thousands of reader recommended garages, plus how-to guides and tips on servicing.
Related models
Brisk or rapid performance, depending on model. Handles well. Looks improve with familiarity.
 

Ask Honest John

Value my car

Amount to borrow
Sorry. The minimum loan amount is £1000
To pay back over

My credit score

Best available rate 9.20%

Total repayment £9,304.93

Total cost of credit £1,804.93

£155.08

60 monthly payments

Apply now

Representative example

The Representative APR is 13.2% (fixed) so if you borrow £7,500 over 4 years at a rate of 13.2% p.a (fixed) you will repay £199.21 per month and repay £9562.20 in total.

;