What cause accelerate power loss

Question edited for clarity and better English.

How many million miles has it done and when was it last serviced?

Lots of help in the link

https://www.google.com/search?q=Hino+700+cuts+acceleration

..

run the fault codes and check for transmission control, servo, solenoid problems

There is a vacuum advance attached to the distributor. Inside the vacuum advance is a rubber diaphragm that can crack from age an no longer work. Sometimes the vacuum hose that attaches to it may not be getting proper vacuum. This device adjusts your timing when you accelerate. Improper function could cause the problems you describe. Also, a vacuum leak in any of your vacuum system could cause the problem your describing. Too much air intake on take off from a faulty vacuum system could throw off your air fuel mixture on acceleration causing hesitation until the air fuel mixture can catch up which is when the power comes back. Hope this helps.

What year ? Throttle position sensors and Mass Air flow sensors could cause this problem.

Clean your fuel tank power loss could be caused by water in your fuel line and tank.

Click the link below to troubleshoot this problem: ---
Car loses power while acceleration? http://schematicsdiagram.blogspot.com/2011/12/car-loses-power-while-acceleration.html

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Loss of acceleration?

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

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Acceleration lag problem?

http://repairhelpcenter.blogspot.com/2012/01/acceleration-lag-problem.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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accelerator pedal sensor?

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

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stalls and bucks on Acceleration?

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

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Engine accelerates when brake is applied?

http://technoanswers.blogspot.in/2012/02/engine-accelerates-when-brake-is.html

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This will help.

Thanks.

For acceleration problem, the help links are provided below, click the link below to go through its procedure: ----
Engine accelerates when brake is applied? http://technoanswers.blogspot.in/2012/02/engine-accelerates-when-brake-is.html ---------- Loss of acceleration?

http://technoanswers.blogspot.in/2012/02/loss-of-acceleration.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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accelerator pedal sensor?

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

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stalls and bucks on Acceleration?

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

-------
Acceleration lag problem?

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

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Car loses power while acceleration?

http://schematicsdiagram.blogspot.com/2011/12/car-loses-power-while-acceleration.html

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This will help.

Thanks.

Download this link and find your Service manual for your vehicle. It will serve you well and to keep for future reference

http://ezinearticles.com/?Find-the-Free-Auto-Repair-Manual-You-Need-Online&id=92717

check transmission fluid.change fuel filter and air filter.try changing up on where you buy gas .because bad gas causes problems.

the problem was caused by a loose ignition wire
Carl