FL1 TD4 power loss and smoke

Hi there guys, I bought a freelander one td4 in December last year and almost straight away I noticed a problem after the car had warmed up I’d get power loss and after a bit of time a greyish smoke coming out the exhaust, I did a full service which included an oil/air separator mod for the pcv as well as a new fuel filter but alas this did not fix the problem, I later saw that a low pressure line going into the high pressure pump was leaking so I replaced that and stopped the leak and thought all was fixed but now the problem has come back and I’m pretty dumbfounded on what to do, if I turn the car off and wait a couple minutes and turn it back on then it stops smoking and drives fine for a while before the problem arises again. Any ideas would be much appreciated!

Edit: it also has an egr blank kit

Hi,

For your issue, you should look at the low pressure pump. If it is dying, it can have some issues when hot.
When you turn the key on position 2, you should hear a subtle noise coming from the low presure pump.
If the pump is noisier, you have a potentiel problem.

You did a full service :
You checked turbo hoses for any leak ?

Regards.

Alteredtech said:

Hi,

For your issue, you should look at the low pressure pump. If it is dying, it can have some issues when hot.
When you turn the key on position 2, you should hear a subtle noise coming from the low presure pump.
If the pump is noisier, you have a potentiel problem.

You did a full service :
You checked turbo hoses for any leak ?

Regards.

Click to expand...

I was thinking low pressure pump but then I wasn’t sure how it would cause smoke so I wasn’t sure! Checked the hoses and all seemed fine had one hose that had a bit of wear on it from rubbing against the screw on the intake but no leak coming from it!

A couple of things you could try is reinstate the EGR making sure it is clean, as in photo below.
1

In fact you could remove the manifold and give that a good clean out, after removing the MAP sensor from the side and wiping that clean with a rag with some carb/brake cleaner on the rag.
2

Manifold can be cleaned out with oven cleaner, left for at least 3 hours minimum, then jet washed out left to dry before refitting, the rubber gaskets are reusable.
3

You need it clean like this below.
4

5

Another thing to try is a leak back test on the injectors, use this kit below.

I presume you fitted a new air filter in your service.

Arctic2 said:

A couple of things you could try is reinstate the EGR making sure it is clean, as in photo below.

1

In fact you could remove the manifold and give that a good clean out, after removing the MAP sensor from the side and wiping that clean with a rag with some carb/brake cleaner on the rag.

2

Manifold can be cleaned out with oven cleaner, left for at least 3 hours minimum, then jet washed out left to dry before refitting, the rubber gaskets are reusable.

3

You need it clean like this below.

4

5

Another thing to try is a leak back test on the injectors, use this kit below.

6 Cylinder Diesel Injector Flow Meter Adaptor Kit Common Rail Leak Off Tester | eBay

4Pcs Universal Motorcycle Carburetor Synchronizer Motorbike Vacuum Gauge Tool. Removal /Bush /Steering /Wheel. Tester / Gauge / Cooling. Engine Timing Tool Kit For Vauxhall Opel 1.6 Cdti Diesel Engines Set.

www.ebay.co.uk

I presume you fitted a new air filter in your service.

Click to expand...

Thanks for the ideas! I’ll give all the cleaning a go on the weekend(weather dependent!) and see if that solves the problem before I venture into the injector route!