Thread: Just had the Puma serviced

Originally Posted by Scallops

Yes - it is audible when working properly. One way I can tell my valve is bunged is by watching and listening to the engine at start up (from cold) at idle - the rpm will vary slightly when the EGR valve is bunged up. Clean it (or in my case - put a new one in) - no idle variation.

Would it not be better to remove it rather than clean it?

Dave.

Originally Posted by Mr Whippy

Would it not be better to remove it rather than clean it?

Dave.

Yes - it would be - but this brings the engine management light on as air flow is restricted by blanking with the Puma setup - hence the reason blanking kits are still being worked out for this model.

A German chap on Defender2 is saying his kit with software patch should be available towards the end of this year. Once something like this is out, tested and all good, I'll be blanking mine off for good.

Originally Posted by Scallops

Yes - it is audible when working properly. One way I can tell my valve is bunged is by watching (the tacho) and listening to the engine at start up (from cold) at idle - the rpm will vary slightly when the EGR valve is bunged up. Clean it (or in my case - put a new one in) - no idle variation.

We can't have every Puma owner rushing off to the dealer on this one.

So let me qualify what I wrote above:

There are degrees of audibility.

If you can hear it knocking over the sound system then that is too loud.

If you can't hear it then that doesn't mean that it isn't doing its job its just that you can't hear it from inside the cab.

My point was that the EGR valve operation was much quieter after the service. The EGR valve was louder than I've heard it before prior to that service. Therefore something mysterious thing had been done during the service to decrease the volume. I presume that it had been cleaned/de-carbonised. The idle speed is steady so I presume the blessed EGR is still functioning.

Originally Posted by one_iota

We can't have every Puma owner rushing off to the dealer on this one.

So let me qualify what I wrote above:

There are degrees of audibility.

If you can hear it knocking over the sound system then that is too loud.

If you can't hear it then that doesn't mean that it isn't doing its job its just that you can't hear it from inside the cab.

My point was that the EGR valve operation was much quieter after the service. The EGR valve was louder than I've heard it before prior to that service. Therefore something mysterious thing had been done during the service to decrease the volume. I presume that it had been cleaned/de-carbonised. The idle speed is steady so I presume the blessed EGR is still functioning.

A good point too, Mahn. I have to listen out to hear mine.