lamont1 wrote:
> 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.
>

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Breaking a belt will have about 90% chance of damaging SOMETHING. Did
you ever test the valve clearances when you were putting it all back
together?

Have you done an (ignition) timing check with a timing light?

You could just be out a tooth, so your cam is running several degrees
too advanced, and causing ping, since cam drives distributor.

Knowing what car and mileage would help too.

'Curly'