Pinto Car Club of America

the 2.0 in my 73 is backfiring through the carb and is really hard to start, as well as intermitintly haveing a major drop in power, i've tried putting a rebuilt carb on it but that didn't help for long, also the timeing jumps around when i check it with a light. thanks a bunch chris

Check the timing belt to make sure it's not slipping. It may be a worn belt or a worn sprocket.

Quote from: pinto_chris on January 29, 2005, 06:43:26 AM
the 2.0 in my 73 is backfiring through the carb and is really hard to start, as well as intermitintly haveing a major drop in power, i've tried putting a rebuilt carb on it but that didn't help for long, also the timeing jumps around when i check it with a light. thanks a bunch chris

Sounds more like an ignition problem.  Do you still have points?  Try new points, cap and rotor, and spark plug wires.

I would also check the distributor mechanically.  As well as the distributor drive gears and wheels.

Quote from: pinto_chris on January 29, 2005, 06:43:26 AM
the 2.0 in my 73 is backfiring through the carb and is really hard to start, as well as intermitintly haveing a major drop in power, i've tried putting a rebuilt carb on it but that didn't help for long, also the timeing jumps around when i check it with a light. thanks a bunch chris

This is typical behavior of a  timing belt issue. One tooth off and it will cause your car to do all the above.