hello, i just replaced a broken timing belt, the car started right up after
the belt replacement but now i get a rattling sound from the engine when i
accelerate under load, i never hear anything when im idling or when i rev
the engine in neutral, i only hear it when im accelerating . im thinking
after chaning the belt the timing is too far advanced plus, i did fil the
tank with 89 octane before the belt broke. could somebody please tell me if
valve problems create constant chattering sounds even in neutral or do valve
problems become more pronounced during acceleration.

it kind of makes sense that a new belt that isnt stretched like the old one
would cause the timing to be advanced so im hoping its the timing and cheap
gas and not the valves.