If it is intermittent it could be your not putting the right octane gasoline in the engine. Normally this will make it ping under load. If it has a clatter from the top of the engine all of the time you probably need to adjust your lifters. This is normally not a problem for today's lifters. Also if the noise is from the bottom of the engine you probably have worn bearings. Hope this helps.
Valves will clatter if the engine is overheating.Valves will clatter if the engine is overheating.
Valve train clatter.
clang
Dishes can clatter
clatter
The past tense of clatter is clattered.
Clatter for Control was created in 2003.
Valve clatter? Check oil level and pressure? Fuel mixture?
The clatter of dishes could be heard from the kitchen as the restaurant staff prepared for the evening rush.
they go through a medium which makes them break when they hit the floor a solid
The cast of Clatter - 2010 includes: Paul Stockman
If there is adulteration in diesel, you will gt late throttle response. There will be ignition delay. A good diesel gives wafer crisp power delivery & quick throttle response. Good quality diesel gives excellent low end torque & strong pulling power from lower RPM. As per obsevation of Multijet engine of FIAT :- In multijet engine, good quality diesel burns with clattery sound on idle. In multijet engine ,at cold start ,Adulterated diesel gives diesel clatter but diesel clattter disappears when engine goes to operating temp. In multijet engine at full operating temperature diesel clatter disappears & engine revs like petrol engine without sound of diesel clatter.