Comments by "David Elliott" (@davidelliott5843) on "Seafoam--can't believe what it did to my engine episode 5--cylinder cleaning test using water!!" video.

  1. Why go outside (in the rain) for a brick when the available jack does the job.
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  2. During the (bad?) days of lean burning engines the exhaust tip would be pale grey and cylinder heads were clean. Catalysts need fuel to operate so engines are run slightly rich. Regardless of fuel injection, that leads to carbon in the head and exhaust above the catalyst.
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  3. A blown cylinder head gasket (watercooled) will effectively jet wash the affected cylinder heads. Water injection might need to be quite considerable to get the same effect.
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  4. Water injection is used for supplemental cooling in high performance engines. They will have good gas flow rates and be cramming the cylinders with air fuel mixture. It’s probably not so helpful in a low compression side valve engine that has poor gas flow by design. It may well help a car engine if it’s done at motorway speeds. But the good old “Italian turns up” does the same thing. Even better if you use a posh petrol like Shell ultimate whatever.
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