1987 560 sl mercedec benz, fuel presure ok, spark ok, cylinder presure ok, as I turn the ignition key on the cilimnders all get foold badly that even locked the engine. I need to removed the spark plug and gert the fuel that eccumulate in the cylinder. When I clocked the fuel presure hose and let the engine get dry a litle, I strat the engine runing ok til all the fuel used. The car have fuel distributir I removed the fuel distributor for checking the pin (valve) if no stock so far the pistong on the fuel distributor slide in and out smooth. Is any idea what is the problem and if any way to chacke fuel governor.