Engine note changing

[JohnnoK]

I recently replaced the engine in my Disco II Td5 and I've noticed a strange thing.

When I start the engine and its idling it sounds like the old engine did, quiet and "normal" for want of a better description, but as soon as I give a bit of throttle, the engine note changes noticeably to a much harsher diesel sound that is more like the older generation engines than the Td5.  Both old and replacement engines are 10P and I have not yet done the injector coding, but my Nanocom tells me the cylinder balances are from +2 to -1 across the 5 cylinders. The turbo is the one off my old engine, so the wastegate etc is good.  It starts on the button even in what passes for winter in Cape Town (+4 at the lowest) and the one full tank of fuel it has had delivered essentially the same mileage as the old engine.

Any ideas on what could be doing this?

[bear]

Hi, I'm no expert but could it be the injector back lash needs adjusting? Hopefully the more knowlegable will be along soon.

Griff

[JohnnoK]

Thanks, I need to get the tappet cover off to get the codes of the injectors to load them, will have a shufti while it's open.

[Escape]

With the injectors properly coded and clearance checked, you will have already eliminated to most likely causes I think. Let's hope it's as simple as that!

[JohnnoK]

Sigh, that is going to have to wait until I get back from work.

The coup in Gabon has not gone off the rails, so they reopened the borders again and I leave tomorrow. I'll try and remember to update this when I get back and have recovered from  my carpal tunnel surgery a few days later.