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RF3777

Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144

How to Decarbonize a diesel engine with water?

Anyone try this before? my TD5 going to have annual inspection, I'm trying to de-carbon before the test!

https://www.youtube.com/watch?v=HG4KJ5arQd4

30th Oct 2015 9:14am

Mash

Member Since: 09 Feb 2015
Location: Guernsey
Posts: 1674

I will stick to not adding water into my engine, it's non compressible and can destroy it that's fact. This video I would not follow. 90 wolf - Jasmin http://www.defender2.net/forum/topic39408.html
90 V8 - Maggie http://www.defender2.net/forum/topic42564.html
110 TD5 - Buggsy http://www.defender2.net/forum/topic59029.html
52HG25 lightweight https://www.defender2.net/forum/topic72342.html
D3 Hse - Fiona
Capri 2l S - Anna

Think I might have a problem............

30th Oct 2015 9:37am

dorsetsmith

Member Since: 30 Oct 2011
Location: South West
Posts: 4554

you have only just fix if

30th Oct 2015 9:37am

shaggydog

Member Since: 12 Aug 2012
Location: Kent
Posts: 3347

1991 Defender 110 200 Tdi USW Arles Blue

For god sake don't that will most likely destroy your turbo

Just use injector cleaner like everybody else and give it a good thrash around the New Territories and it will be fine.

I use Forte injector cleaner on mine and always get good results

Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197

Self confessed mileage hunter

30th Oct 2015 12:39pm

Knot-yet

Member Since: 21 Nov 2013
Location: N. Lincs
Posts: 39

What a stupid idea.

The guys states a large diesel engineer told him how to do it, I am such a person too...

We water wash the compressor side of the turbocharger on large marine engines at full load to clean fouling off of the compressor wheel. The water entering the compressor is changed into water vapour due to the relatively small quantity, large size and high speed of the turbocharger as well as the temperatures involved. Any water mist is collected and seperated in the charge air cooler (inter cooler) and doesn't enter the engine. It's very effective for cleaning, but our engines don't use air filters, just a thin layer of polyester matting around the silencer, it's changed weekly of whenever it gets minging and covered in dust and dead bugs.

We Also water wash the turbine side of the blower at very low load, but this has changed now and we now dry clean the turbine at high load with crushed nut shells, injected into the inlet of the blower with compressed air just before the nozzle ring. Dry cleaning is more effective and less time consuming than wet cleaning of the turbine, though dry cleaning is a lot harder on the nozzle rings of the turbocharger.

The engine builders require this frequent cleaning due to the relatively dirty, dusty atmosphere in the ships engine room which does lead to fouling of the compressor. The turbochargers I am talking about are many many times bigger than anything used in road transport and are sucking in vast quantities of air. Sustained low load running of the engine also leads to accelerated fouling. The fouling of the turbine side occurs due to the heavy fuel oil we burn, which is dirty, and full of all sorts of rubbish, and again fouling is accelerated by low load running.

This is done on a large marine two stroke, and large medium speed four strokes.

Definitely not something I'd be doing on a car engine burning very clean ULSD and likely to be operated at higher loads. I am very doubtful if there would be any fouling, even with the amount of oil mist that seems to enter the induction system on vehicles equipped with an EGR. Aalthough what he was doing would work in theory i really can't see the point.

By the way, All it's doing is cleaning the compressor wheel of the turbocharger of accumulated crud, it's not decarbonising anything in the engine at all.

Use posh diesel and injector cleaner in your car, or landrover

30th Oct 2015 8:39pm

Lambley

Member Since: 20 Apr 2013
Location: Mid Devon
Posts: 1435

I hope engine parts are easily available out there in HK, if not I wouldn't bother, crazy idea. Like Shaggy says - just give it some Forte or similar and a tank of good fuel, then take it for a blast.

30th Oct 2015 10:06pm

mikeh501

Member Since: 07 Jan 2013
Location: United Kingdom
Posts: 1142

Interesting. You say they get fouled up on the compressor sidedue to the dirty engine room? So do marine engines not suck air through a giant snorkel up top?

30th Oct 2015 10:09pm

Triggerfinger

Member Since: 18 Aug 2015
Location: landyrotty
Posts: 129

Re: How to Decarbonize a diesel engine with water?

RF3777 wrote:
Anyone try this before? my TD5 going to have annual inspection, I'm trying to de-carbon before the test!

https://www.youtube.com/watch?v=HG4KJ5arQd4

I think his impellor needs replacing hardly any water coming out the exhaust

30th Oct 2015 11:09pm

RF3777

Member Since: 10 Apr 2015
Location: Hong Kong
Posts: 144

I dont have the guts to try

3rd Nov 2015 3:30am

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