Wheeler Dealer
- Thread starter Dopey
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You will notice that diagnosis of head gasket failure usually consists of removing the spark plugs and seeing if you can find a clean one. That is the cylinder with the water ingress. So yes spraying a fine mist of water into the engine may clean it. The combustion space is effectivly cleaned by super heated steam. But it also increases the cylinder pressure on combustion, as when the water turns to steam it bulks up the inlet charge. It is to be honest something i would not recommend doing.
Honest Wammers
Reminds me there's another honest guy up the sky called JohnTempting to try the water trick, maybe just a wee bit for cleanness - or maybe not for safety
eightinavee
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Years ago when I was contract building Kubota and Hatz diesels we had a little 3cyl diesel Kubota that was slubbering,it hadnt run in properly and was burning oil.We tried running it on full load and nothing changed,then on advice from someone at Cummins diesels we sprayed a litre of vinegar into the inlet with a handheld sprayer over about 5 mins running.We thought it was a joke - but it worked and so saved a strip/rebuild and a lot of money. Bit kinder than the Deutz diesel method of a handful of Vim down the inlet while on full load on a dyno.Good mate of mine had to do it a few times,he said the engine would slow right down and then black smoke like hell while it tried to get back on top of the load.They did an oil change after and sent them back.
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Honest Wammers
Tempting to try the water trick, maybe just a wee bit for cleanness - or maybe not for safety
Up to you matey. But a lot cheaper than £70.00 a throw for the snake oil.
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Yeah hot vinegar is a well know cleaner. Steam/acid will clean most things. So that sounds a reasonable method.
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Vinegar with bubbles then
Might work but whatever you do make sure it is quick, if you have an automatic. Sitting there on full chat for a long time or even a short time may damage your gearbox.
Tried the vinegar sprayed into inlet, no immediate difference. (Wife wouldn't bodge but she lent me a plant mist sprayer)
Had to spray through the MAF as it just died trying direct, for sure it went through the system as some dirt came out the exhaust on the floor.
Who knows? May secretly have added lost power and improved the fuel consumption
Got the throttle cleaned up nicely, quite dirty, found the o-ring sealing to airbox in poor state so made a new, about 80 mm.
Conclusion: Well, if you have nothing else to do in your life it probably doesn't harm, only time will tell.
Had to spray through the MAF as it just died trying direct, for sure it went through the system as some dirt came out the exhaust on the floor.
Who knows? May secretly have added lost power and improved the fuel consumption
Got the throttle cleaned up nicely, quite dirty, found the o-ring sealing to airbox in poor state so made a new, about 80 mm.
Conclusion: Well, if you have nothing else to do in your life it probably doesn't harm, only time will tell.
The water spaying i used to have on my Celica GT4, it was used to cool the charge temp and obviously provide more power. On the dyno 18bhp at the wheels was gained and it did keep the engine spotless inside.
As for cleaning the engine i used to work for the company that makes the addative for BP Ultimate (petrol only) and the cleaning properties were that good that on the test bed the run an engine for the equivalent of 6 months and stripped it down to show the amount of carbon buid up. They then put it back together and ran 50 litres of BP ultimate through it (the average tank size). Then stripped it again and the results were amazing it had cleaned the majority away. Seen it myself so no PR bull, ever since every six months i always run a tank of it through all my cars.
Just thought i'd add what i know.
As for cleaning the engine i used to work for the company that makes the addative for BP Ultimate (petrol only) and the cleaning properties were that good that on the test bed the run an engine for the equivalent of 6 months and stripped it down to show the amount of carbon buid up. They then put it back together and ran 50 litres of BP ultimate through it (the average tank size). Then stripped it again and the results were amazing it had cleaned the majority away. Seen it myself so no PR bull, ever since every six months i always run a tank of it through all my cars.
Just thought i'd add what i know.
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I tend to use, Ronseal **** your engine up varnish. Pour it into the venturi and run engine flat out for half an hour. Total knackers your engine but the finish is lovely. Does exactly what it says on the tin.
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i thought it was only any good for marine engines?
or is that just yacht varnish?
or is that just yacht varnish?
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stemac33
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does putting a gallon of petrol into a tank full of diesel do the same trick as all this decoke stuff
roddy4
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putting petrol into a diesel (small amount) was used to stop waxing this did work.other benefits would be minimal, diesel lubricates petrol does not.
putting petrol into a diesel vehicle is not good for the seals.
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Specially the **** we have now which is full of chemicals and rots almost anything it touches.
