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nickhodgson

Member Since: 08 Dec 2009
Location: Zambia
Posts: 174

Black Smoke on Full Throttle

Hi

I have black smoke on full throttle on my 2.4 Puma. It's a 130. I replaced the injectors about 30k kms ago as a precaution (there was no issue). I have since replaced the VCV with a new Denso unit. I have also removed the snorkel as I thought it could be restricting air flow.

I don't remember the black smoke from the past (more than 10k kms ago)

Below is what my Ultra Gauge shows. Fuel Rail PSI can go up to 23,000PSI.

Click image to enlarge 1995 300tdi Defender 90 P/UP
2011 Puma Defender 130 D/C
2000 300tdi Defender 110 P/UP
2015 Discovery 4 SDV6 HSE

22nd Apr 2021 10:08am

camelman

Member Since: 27 Feb 2013
Location: Peak District
Posts: 3372

Has it been tuned at all? Sometimes people can go over the top.

The other thing is to check the intercooler and turbo hose for wear or splits.

Where abouts in Zambia are you? We were out there a couple of years back before covid and looking forward to getting back when things settle.

Longer term plan is to ship my 130 out to Southern Africa for a wander.

22nd Apr 2021 10:35am

hank

Member Since: 12 Sep 2016
Location: South Wales
Posts: 2296

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

Mine was a bit smoky under load. What cured it was a combination of two things...

1. Replaced injector seals. Existing ones had failed and were leaking. I think this was throwing off the diesel/air mixture somehow? Not sure exactly how, whether the ECU was overcompensating fuel or the leak was throwing off the mixture as air escaped from the cylinder.

2. Fitted catch tank. When the injector seals were leaking it was venting gas/oil via the rocker cover breather which goes back into the inlet and burns blue/black. Disconnect the positive crankcase pressure return hose from the inlet temporarily and see whether it improves the situation > 110 XS Double Cab

22nd Apr 2021 12:25pm

nickhodgson

Member Since: 08 Dec 2009
Location: Zambia
Posts: 174

camelman wrote:
Where abouts in Zambia are you? .

Hi Camelman, I am in Lusaka. Have been for many years. You can always use me as a Lusaka contact when you do pass by. 1995 300tdi Defender 90 P/UP
2011 Puma Defender 130 D/C
2000 300tdi Defender 110 P/UP
2015 Discovery 4 SDV6 HSE

22nd Apr 2021 3:26pm

nickhodgson

Member Since: 08 Dec 2009
Location: Zambia
Posts: 174

I did fit new genuine injector seals and new bolts and torqued and turned them as required. How else could I diagnose leaking injector seals: tapping noise or blowby from the oil filler cap? 1995 300tdi Defender 90 P/UP
2011 Puma Defender 130 D/C
2000 300tdi Defender 110 P/UP
2015 Discovery 4 SDV6 HSE

22nd Apr 2021 3:28pm

camelman

Member Since: 27 Feb 2013
Location: Peak District
Posts: 3372

nickhodgson wrote:
camelman wrote:
Where abouts in Zambia are you? .

Hi Camelman, I am in Lusaka. Have been for many years. You can always use me as a Lusaka contact when you do pass by.

Excellent thanks. Will see what the world looks like next year

22nd Apr 2021 3:37pm

Moffett

Member Since: 08 May 2018
Location: Sligo
Posts: 69

2008 Defender 110 Puma 2.4 XS CSW Stornoway Grey

I had this smoke steam for a few days. Cleaning the MAP sensor (which was totally clogged) sorted it. It is a 5 minute job.

13th Jun 2021 8:13pm

Moffett

Member Since: 08 May 2018
Location: Sligo
Posts: 69

No, it's back. Vastly improved, but it is still happening in 6th. The search continues.

14th Jun 2021 8:19pm

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