Decarbonising KZTE engine

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Opsmedic
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Vehicle: 2001 Hilux KZ TE 4x4 D/C
Real Name: David
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Tue Jan 16, 2018 7:49 pm

Hi All

I was approached by a gent at the car wash telling me of a product he has that will decarbonise my KZTE's engine. He says it is a fluid that is run through the fuel system by connecting it to inlet by after the filter. Won't tell me the product name because he has a connection in JHB that imports from the USA. I have seen online videos of guys pouring water into the air intake claiming that it works looks bit dodgy to me.

He claims better performance and fuel consumption. Has anyone heard of something like this or has done it? Interested to hear if it is legit and if it works.

Thanks
Regards
Dave

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Mud Dog
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Real Name: Andy

Wed Jan 17, 2018 12:43 am

I know that feeding a little water / steam into the intake cleans it up very nicely and can even give better fuel economy, BUT it runs hotter for some reason and it can errode the metal in the combustion chamber. I wouldn't do it. A good open road run normally does the trick anyway. :winkx:
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Wed Jan 17, 2018 8:34 am

I have heard in the old days guys dropped some brake fluid in the carb and then some water.

Sometimes, apparently, with enough carbon in the engine, the engine would seize up due to the volume of solids now stuck on top of the pistons....

Where would the solids go? Perhaps between the piston and cylinder wall? Could that lead to some scouring?
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Real Name: Andy

Wed Jan 17, 2018 8:49 am

Thabo, one would think that's a real possibility depending on how the solids are 'cleaned' - do they come off in bits or are they 'dissolved'.

I had a Honda that liked to leak water into the #3 cylinder - problem sorted over time but I opened it twice and both times that cylinder was shiny clean and the plug looked like it was sand-blasted but was eroded on the rim and on both electrodes. The exhaust valve showed tiny amounts of erosion on the edges, but otherwise undamaged. I wonder how bad it would have been if it had been driven with the water leak for a longer period.

The bore was like a mirror - no scratches or scour marks, so with just water it would appear that the carbon deposits are 'dissolved' rather than breaking off in pieces.
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Lorry
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Wed Jan 17, 2018 10:46 am

hi guys
There are a few products out there that help clean out and de-carb the engine. the Company Gold wagon sell a product called liquid molly, I have used and it and works well.
spray in additive while the engine is running, switch the engine off wait 5 min and start it up. it worked really well on my engine, i am a 2005 d4d dc with 180 000km on the clock. I am trying out a product soon called valvoline EGR and Turbo cleaner. that american product that you refered to earlier is called Seafoam, lots of videos on you tube regarding it.
will let you know how it goes with this new product
cheers
LT

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pampoen
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Wed Jan 17, 2018 9:27 pm

Yes Ive watched a few vids on Seafoaming an engine, looks like it works really well. It has been on the market in the US for many years in fact check this vid out. https://www.youtube.com/watch?v=agAWXnT4-EQ
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Sat Jan 27, 2018 8:50 pm

Sorry to say, the only way to de carbon a motor is to open it up and refurbish the motor. If you do it like that with a diesel turbo, tata turbo with all that solids.

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Opsmedic
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Sun Jan 28, 2018 8:33 am

I tend to agree with that Nico, I have the opportunity to do that now as it would happen my oil pump packed up and it rang bearings so taking it in tomorrow to be opened and sorted

Basil
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Wed Feb 21, 2018 7:52 am

Morning Gents,

I have a SFA 1993 model with a KZTE motor which recently had some engine problems. With my lack of diesel knowledge (Knowing petrol motors), it sounded like one cylinder was dead (in petrol motor terms, misfiring on one cylinder). I had the injectors done just prior to the issues.

I then took the bakkie to diesel specialist in town and they started with the fault finding. The guy advised me that they would recommend that they do a system cleaning with that cleaning product you guys mentioned (under high pressure while the engine is running).

That fixed the problem. So obviously I had sticky valves or something similar. No this is not the solution for everyone's problems, just it might save you a lot of money as apposed to open the engine and start stripping and cleaning.

Hope this helps to make a desition. It was R1,5k to do and was done painlessly and had a short turnaround time.

Scott
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Wed Feb 21, 2018 8:55 am

looks like I am not the only one with KZTE problems mine packed up Sunday just outside Witbank had get my wife to tow me in.Previous block droped off at engineering should collect today and start the rebuild.

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Opsmedic
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Sat Mar 10, 2018 6:30 pm

My Lux's motor is now all nice and clean inside. The oil light started coming on intermittently when idling as soon as I accelerated it went off. Checked the oil was fine called the mechanic that was going to service it and he said bring it around to have a look. On the way it lost power on the highway I pulled of and the motor was knocking. Turned it off and towed it home.

Took it to the mechanic and he started stripping, head cracked in four places and bad scoring on number 1 cylinder. Well ended up putting on a AMC head, new pistons, bearings, rings and re sleeve. Now running great and carbon free my wallet is a bit lighter though.

Turns out some banjo bolt feeding oil to the cylinder from the bottom came loose and caused the loss of oil pressure.

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