my mazda will only go 40mph i check fuel pressure it's about 32 pounds pressure

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the car been sitting about 2 years i just tuned it up when the car is park an the car is idoling i step on the gas the motor reves up then it hesitate then it go's a little higher then stops so every time you step on the gas it will keep doing the same thing,put the car in gear,step on the gas an the car will only go up to 40 mph.