My voltage regulator on my Mercruiser 488 caught fire so I had to use my fire extinguisher on it. Now I have that white powder all over my engine and engine bay. I have thought to spray it all with degreaser and wash it off with a hose but I am concerned about my startermotor and stuff getting wet. has anybody got any ideas, a vacuum cleaner won't work because of the oil on the engine that has turned the powder to goo.