JEEZO-PEEZO !
Don't _EVER_ ' pour ' water into an intake as it doesn't compress and can easily crack pistons , bend rods and crack heads too ~ use a trigger sprayer and carefully mist the water in as it only takes a tiny bit to blast the built up carbon off the combustion chamber .
You must have the engine fully warmed up and revved as fast as you can stand it whilst doing this , be aware black hot carbon bits _will_ come flying out the exhaust so don't be backed up to the white garage door when you do this .
