Black smoke

cambridgecockney · Jul 26, 2014

Got my wife to tow me back today with the td5.only pulling a berlingo 1.9d but the black smoke from the discos tail pipes was a fair bit.its running with egr deleted,middle box removed,large alisport intercooler.and a dastek power chip.2002, 15p, manual gearbox.recent new maf.any thoughts please.

robhew86 · Jul 26, 2014

Over fuelling. Possibly down to the re-map, You checked MAF sensor ?

listerdiesel · Jul 26, 2014

Too much diesel or not enough air.

Overfuelling as mentioned or the turbo is shot. collapsed pipe on the suction side of the turbo etc etc.

Peter

thebiglad · Jul 26, 2014

You checked your air filter?

cambridgecockney · Jul 26, 2014

New air filter,new siemans maf,new silicon hoses.

thebiglad · Jul 26, 2014

cambridgecockney said:
New air filter,new siemans maf,new silicone hoses.

Have you cleaned your MAP and the inlet manifold? Have you checked the functioning of the wastegate modulator?

cambridgecockney · Jul 26, 2014

cleaned a while back.new wastegate modulator last year but car been standing a long while.

sierrafery · Jul 26, 2014

put your nanocom to work and record some live data, concentrate on the AAP and IAT readings... see injector balance too, cos black smoke can be from injectors too

cambridgecockney · Jul 27, 2014

sierrafery said:
put your nanocom to work and record some live data, concentrate on the AAP and IAT readings... see injector balance too, cos black smoke can be from injectors too

Will do. do you think it could be because ecu needs upgrade for 15p engine.

sierrafery · Jul 27, 2014

could be

cambridgecockney · Jul 27, 2014

Ok so been 50 mile round trip.aap started 100.04 then dropped 98.60 then fluctuated between 101.50 down to 99.60 at 70mph.is it supposed to drop as you go faster.intake air temp 27.8.engine temp was 84.

sierrafery · Jul 27, 2014

the fact that the AAP drops on acceleration means that it's a restriction in air flow as the engine "sucks" more air than it gets creating a depression in the airbox...put a new quality air filter and make sure that the air intake duct is not clogged or something, also if you dont remember when you changed it put a new depression controll valve too

what you named intake air temp must be the inlet air temp read by the IAT sensor which is combined with MAP in the same body and it seems normal to me

50 pence · Jul 27, 2014

How much does it smoke and when ?. A chugg of smoke will be normal on a remapped TD5 just before it comes on boost.
My TD5 used to black smoke quite heavily on boost, ( especially when cold ), and this was down to a poor remap.

cambridgecockney · Jul 27, 2014

new depression controll valve just fitted,has a new air filter one of these.
LANDROVER DISCOVERY 2 TD5 DIESEL PERFORMANCE AIR FILTER - NEW (4692) | eBay
engine was cold when she towed as i was only 1/2 mile from home.probably looked worse as it came from 4 tail pipes.

sierrafery · Jul 27, 2014

do you eventually have a snorkel? ... anyway, as said depends very much on the remap too

cambridgecockney · Jul 27, 2014

sierrafery said:
do you eventually have a snorkel? ... anyway, as said depends very much on the remap too

No snorkel.will start search for nnn ecu asap.

thebiglad · Jul 27, 2014

cambridgecockney said:
new depression controll valve just fitted,has a new air filter one of these.
LANDROVER DISCOVERY 2 TD5 DIESEL PERFORMANCE AIR FILTER - NEW (4692) | eBay
engine was cold when she towed as i was only 1/2 mile from home.probably looked worse as it came from 4 tail pipes.

That will almost certainly why it was smoking, because it was cold and you were having to give it a bit more pedal due to towing.

Black smoke

cambridgecockney

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