Hi

I would get a 2nd opinion. It could just be one or more leaking injectors, seams odd to be both.

Alex

In my experience, I think it's quite likely that the garage which quoted the £2000, not being a diesel specialist themselves, will not do any work at all on the car. They'll charge the £2000 but take the car to the local diesel specialist and let them sort it out! They'll probably pay less than 1k to the specialist, and make a big profit for themseves!

Of course you could take it to a Honda dealer who might know straight away what the problem is rather than using guesswork.

Edit - I have just checked some information and your symptoms are indicating a failed or failing fuel rail overpressure valve.

The following is from the Civinfo forum (same engine) How to diagnose:-

Look at the engine. The fuel rail is the tube with several brass nuts with narrow metal tubes (fuel lines) attached. To the left hand end of the tube, easily missed, is what appears to be a 17mm bolt. Close by is a black braided flexible tubing (low pressure fuel return pipe).

With the engine off, disconnect/pull off the black braided hose, you may need a flat bladed screwdriver to get this started. Attach PVC tubing to the end of the braided tube, seal with adhesive tape, put other end of PVC tubing into container. A 1pt milk bottle seemed to rest quite neatly in the engine bay. Place rags under the tubing and the now exposed metal tube.

Turn over the engine for about 10-15seconds. Return to the engine bay and inspect the container. If diesel is present either in the tube or in the container the over pressure relief valve is most likely to be faulty.

Edited by focussed on 09/08/2014 at 23:23