Hesitation when accelerating

Is the check engine llight on?

Replace the jets in the carburetor with 2 sizes larger jets and the hesitation will disappear. FIRST though, look in the carb and open the throttle with your hand at the same time to see if fuel is being squirted into the venturi's, if not then you need to replace or adjust the squirter. This is what causes hesitation on acceleration.

ENGINE HESITATES WHILE ACCELERATION

LOSS OF ACCELERATION

It can be fuel pressure issue or it's the problem with accelerator pedal or its clogged filters causing there.

There are many other possibilities. I suggest you to go through the list of help links mentioned below, these will help you to confirm where the actual fault lies: -------

Jerks and Hesitates During Acceleration?

http://technoanswers.blogspot.in/2012/07/2004-dodge-town-country-jerks-and.html

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Loss of acceleration?

http://technoanswers.blogspot.in/2012/02/loss-of-acceleration.html

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Headlights flickering and car hesitates to start?

http://howtobyme.blogspot.in/2012/02/headlights-flickering-and-car-hesitates.html

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How exactly the Vehicles Accelerator Cable works?

http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-cable.html

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How exactly Vehicles Accelerator Pump Diaphragm Works?

http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-pump.html

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2000 Toyota Avalon: Engine Lean Codes and Knock Sound on Acceleration?

http://whatisbyme.blogspot.in/2012/05/2000-toyota-avalon-engine-lean-codes.html

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2004 Toyota Avensis: Acceleration And Deceleration makes noise on Front End?

http://whatisbyme.blogspot.in/2012/05/2004-toyota-avensis-acceleration-and.html

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Wheel hop under hard acceleration?

http://technoanswers.blogspot.in/2012/04/wheel-hop-under-hard-acceleration.html

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2009 Chevy impala accelerator pedal sensor?

http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html

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Nissan Pathfinder stalls and bucks on Acceleration?

http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html

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Acceleration lag problem?

http://repairhelpcenter.blogspot.com/2012/01/acceleration-lag-problem.html

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These details will help.

Thanks.

try some lucas fuel injector/fuel stabiliser

MOST TIME CAR STUMBLE OR HESITATION ON ACCELERATION YOU.HAVE A SLIGHT LEAN FUEL MIXTURE.CAUSED BY STOPPED UP FUEL INJECTORS OR FUEL FILTER SLIGHTLY PLUGGED.

check your fuel supply and or fuel filter condition/ check carburetor or fuel injection system if its ok then you must be having a problem with your electrical supply to the spark plugs thats why the engine hesitates...

could be one of your o2 sensors ,coil pack on your spark plugs could be them,clogged catalytic convertor pretty hard to dtermine could be these.hook it up to scanner to make sure it should give you code

just wondering,, when you accelerated you say the needle went up ,,but did the car kinda splutter, or not pull away at all when you accelerated,,,if the needle goes up but the car doesnt seen to pull away then that sounds like a clutch slipping,,.. but if it just hesitates it could be lots of things ,,maybe a dodgy airflow meter..that can also make the car hesitate,,hope that helps you,,,,,

have you checked the fuel injector? if enough fuel is not getting through when accelerating it could "choke" causing the hesitation

THE ONLY WAY YOU CAN TRY IT;

Fuel filter, fuel line, vicuum hose (leak or not) spark plugs cable and some related wires.