I had recently a problem with a 300SEL, shortly after starting the engine there a detonation hunder the hood and the engine fell off. Afterwards he wanted no longer to start. (started on LPG) After trying several times starting, we heard the starter engine turns and the sparkplugs also gives sparkle (tested to earth). Tried on petrol and on LPG, both do not work. At trying longer on petrol, the bougies do not become wet. What part is causing these troubles? In advance thanks for the aid.
grtz Frederik