how to clean the carbon from mower cylinder head

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Decarbonizing an Engine with Water: Myth or Fact?

• Automotive
• Thread starter zoobyshoe
• Start see Jan 20, 2022
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I ran crosswise several YouTubes that arrogate, and apparently demonstrate, that you can tidy carbon deposits from a gondola engine by only spray or pouring (very slowly) water into the intake when the engine is fully warm and running.

I've never heard this from a reliable source and my reaction is that it is in all likelihood an urban legend, like removing eat with coca cola and atomic number 13 foil. However, Eric The Car Ridicule, in the next-to-last video, is usually mainstream, so I'm non sure.

The rule is alleged to be that, upon hit the hot Piston, the water supply flashes to steam and dislodges the carbon deposits. And in the endorse picture it asserts the idea for this came from examination of engines whose guide gaskets had failed: the pistons onto which coolant had leaked were weirdly clean while the bastioned pistons were encrusted with carbon.

What is the real fib on this?

Last emended: Jan 20, 2022

Answers and Replies

examination of engines whose head gaskets had failed:

Combined would expect anecdotes from the use of water injection in aircraft engines to predate this. Sounds plausible. Probably want to plan on a couple of short running time oil color changes afterwards doing this sort of thing.

One would expect anecdotes from the use of water injection in aircraft engines to predate this.

That's something I wondered about. Proponents mention that water injection is a tried and true proficiency for achieving other goals. Therefore, I read the Wiki clause on water injection but it made no mention of engines employing it being especially free carbon copy. Fare you know if information technology's retained they are?

Don't recall seeing such claims re. aircraft use --- doesn't mean it's not been mentioned. Set have vague recollections that pilots were asked to nullify use of water injection unless it was necessary/prudent given circumstances they were in --- does that imply IT was bidentate on engines, operating room just a "save information technology until you really need IT" recommendation?

No more myth was common practice.
Steam has nothing to do with information technology. Water injectant was wont to prevent Detonation at high RPM in front wholly this computer harnessed ignition overindulge came along. Had side effect of cleansing agent combustion chambers i guess..i ne'er played with it but know its design purpose.
We always used ATF ( Automatic drive Fluid).
Was common practice when engines had carburetors. Vegetable oil is not compressible (neither is water but will rust things). The idea was to bring out fluid into the combustion chamber and knock off the carbon deposit habitus dormy. The oil would burn off and foul the trip plug but it was being replaced anyway so did not matter. This helped a lot with the cars owned by the little experienced ladies who ne'er got the engine to pear-shaped operating temperature going to the local anesthetic grocery. Those engines were a mess to rebuild. The intake manifold heat risers were always clogged up with carbon. Anyone who has done this knows carbon requires a hammer and rip off to take away. When you use ATF at high lazy speed you are essentially beating he-- out of the carbon deposits and everything other in the burning chamber.

btw - you get blown manoeuver gasket when you deliver really hi compression ratios ( not likely today) or have cast iron block and aluminum cylinder head. Eventually the result of differing thermal expansion rates will cause a leak to the piss jacket passages. This usually happens around 85,000 miles of a cheap iron out / atomic number 13 engines lifetime traverse. Then you let to get out the head and replace the gasket. And to set IT far-right, mill the head surface 2-dimensional as information technology is probably warped. ( this is the typical scenario these days with little cast iron 4 piston chamber blocks and Al heads)

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Last edited: Jan 21, 2022

Dash cars keep going inebriant that has a dinky amount of disolved urine. The engines are spotless, you can't even read the plugs.

I testament give you that. Methanol is absorbent which means information technology will occupy water vapor directly from the atm. So you are departure to have engrossed water diluting the fuel value of the methanol .But it helps suppresses locomotive bump. You have got to watch your fuel cans echt unventilated. Containers of methanol fuels must be kept tightly paved. It burns " dry cleaner" than racing gas and with the added water so you would expect clean piston domes etc...
I hate the stuff mainly because you can non go out IT burn..one time As a kid i was at the pit logic gate when a sprint car raced into the pits at 35 mph and slammed on brake system. The driver leaped out of the elevator car. A bunch man "hosed" him down with a extinguisher...he was connected fire..i never would give known..

The ethanol that is put under in our fuel is hard, for one it's of poor character and secondly IT attracts moisture. Not good for argentiferous gas tanks or fire lines . You have a difficult meter starting any machinery that isn't used all the time.

I have record just about this Eastern Samoa organism a beneficial fallout of using water injectant on an engine. AEM makes a water only injection kit and I think they mention that it throne keep open cylinders and valves clean. It makes signified, don't some shops remove the head and intake and adroit them with steam? I wouldn't use tap water though I would enjoyment distilled water only, tap water could lead deposits of its own.

My VW TDI users forum had many stories of hydrolocking diesel compression ignition engines with Ocean Sparkle brand.

My VW TDI users forum had many stories of hydrolocking diesel compressing ignition engines with Sea Foam brand.

In the UK there was a craze for steam injection in about 1970. The fomite had a gallon container of irrigate in the engine compartment, and a Cu tube went from this and passed across the exhaust pipe. The resulting steam was LED into the air dribble boxful. Information technology was supposed to raise the octane rating of the fire and I translate that it did work.

I had a '65 corvair turbo in 1985 , you couldn't beat leaded fuel , sol I opted for a holley wat er injection unit . With very few sensors , it injected (sprayed) water at higher vacuum cleaner and solved my detonation problem attractively.

After mowing my whole lawn and mulching a bunch of leaves my mower was nice and hot. It's a Kawasaki 10 H.P. engine, i pulled bump off the air consumption covert and pushed the throttle adequate to about 2/3 power, i then slowly dropped distilled water supply in, it sucked in the water, the rpm would drop a trifle and make a popping noise, i did this nigh 15 multiplication exploitation lonesome a infinitesimal amount of water each time. The locomotive engine definately idles better and ill see how it performs next time i take it out. I think this is a great trick that costs practically nothing and is selfsame easy to get along, i would recommend it. Im trying to find a mode to have it away to my VW 2.0L Turbo, just gotta get a hole in the intake manifold tube.

I curiosity if the carbon might cause problems down stream by getting lodged in cat converter .

I wonder if the carbon might cause problems polish stream by acquiring lodged in cat converter .

Thats a operative question, maybe it would follow wise to disconnect IT before you did this trick. Happening my mower engine i don't think theres whatever cat-o'-nine-tails to worry about, only a small exhaust.

Valves get carbon build up that hinders airflow, reducing performance . Regular decarbonizing power be a smart thing to do.

Here is a very mildly educated guess at what might materialize Ra water cleaning C in an engine.

Steam clean reacts with carbon to form synthesis gas, this is start out of the process to raise feedstock for a Fischer–Tropsch plant. It might be that the dustlike mist of water turns to steam on contact with the hot internal parts of the engine and that steam then reacts with the usable carbon.

Gushing water, out of a cup, jug or hose down into an engine is in all probability not the best fashio to try test this process.

Reasonable by manner of trivia, the 1962 Oldsmobile F85 was delivered with the Fluid-Injection Jetfire locomotive engine that was turbocharged. Oldsmobile referred to the water/alcohol mixture as 'Turbo-Rocket Fluid' that was used as a detonation suppressor. I don't know if the engines were any cleansing agent though.

I have got seen how clean a combustion bedroom is when a head gasket fails between a coolant carry and cylinder. I have no doubt that water can clean atomic number 6 deposits.

I don't know if 5 minutes with a establish nebulizer does the comparable job Beaver State non though.

E.g.

Carbon physique up might raise compression and flatbottomed a small work up at the valve base hinders flow of air . Seems like these two might cancel each otherwise . I'm acquiring enchanted by fuel vaporization , let me have it away if you have any brainwave .

Water does a nice line of work decarboning the piston/cylinder arena but has about nobelium effect on the intake side of the intake valve Beaver State EGR passages and that is where the majority of carbon build up up happens. This is untold more of a problem in direct injection engines. The PCV system functions to reuse combustion blow-away through the intake. It builds au fait the intake valve where the venture effect causes low pressure and the burning contaminants condense out and adhere to the valve channelize. This requires natural science or physics removal and can not be removed with water. You can decarbon part of your engine with water, but you are treating the part of the locomotive engine least artificial past atomic number 6 buildup.

In the UK there was a craze for steam clean injectant in about 1970. The fomite had a congius container of water in the locomotive engine compartment, and a copper tube went from this and passed crossways the exhaust pipe. The resulting steam was led into the breeze separate out box. It was supposed to raise the octane rating of the fire and I read that information technology did work.

Is there some reasonableness why this craze passed? Or dress you suffer any more data regarding this apply?

Here is a very mildly informed guess at what might happen re urine cleanup carbon in an engine.

Steam reacts with carbon to form synthesis gas, this is percentage of the process to produce feedstock for a Fischer–Tropsch constitute. It might glucinium that the satisfactory mist of water turns to steam on contact with the hot internal parts of the engine and that steam clean then reacts with the available carbon.

Pouring water, dead of a cup, jug or hose into an engine is probably not the best way to try test this sue.

I think you're on the right track here, though there's likely a different process involved, and carbon deposits may be peripheral to the reaction(s) of interest. Assuming you're speaking about the H₂O + CO urine shift chemical reaction (which subsequently feeds the main reaction of (2n + 1)H₂ + nCO -> alkane + H₂O), that relies on carbon monoxide rather than raw carbon which is presumptively the major component of carbon deposits on engine parts. On that point's plenty of Cobalt to go around post-combustion in most real-world Otto cycle engines (for exemplar), but there's unremarkably more CO₂. Flared the number of water present during and immediately after combustion may also have an upshot on the water's equilibrium State, conditional the temperature and pressure inside the cylinder.

Last edited: December 15, 2022

Is there some grounds why this craze passed? Beaver State DO you have any more data regarding this practice?

I suspect steam injection works to increase octane rating by cooling the charge. In 1970, many cars needful high octane fuel, which was valuable, and steam clean shot allowed the utilise of cheaper low octane fuel. In the remainder, people were too lazy to top upwardly the water container. American Samoa today's engines throw fuel injection under computer control, the idea of steam injection is not so easily applied. I think over some aero engines in use water injection.

I'm not sure steam injection would do much good by temperature reduction the fuel/publicise charge. The electron tube pick up heat up from the exhaust in the units you cited from cars in the early 70s implies that they wanted to increase the temperature of the injected steam clean. Were it used primarily as a cooling agentive role, you'd want the worst water temperature you could get without hydrolocking the engine, which is usually why misting is done in water injection/antiknock systems.

I think, alternatively, the steam clean injection served atomic number 3 a chemical version of an F1 ERS system.

If too much water is added, the drops wish hit the piston and crack them Oregon break the rods. Constitute careful!!

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