Hi dear friend
How are you
Im afshin.

I currently have a dual-fuel Hyundai forklift 25G-7M with PSI engine.

Problem:
when I turn on the engine, acceleration doesn't any work!
Just engine run on 700 Rpm.

I try to get code with flash mil light but have many error code appears.

I wanted to get some advice from you on what could be the reasons why the gas pedal stops working.

By the way, this only happens on gasoline fuel and the device is Ok on LPG gas fuel.

I replace Fuel pump.
Injectors.fuel filter.
What do you think about this problem?