well i start the car let it warm up then drive it im giving it gas but slowly moves up like really slowly i put the pedal to the floor to see what happens and barely goes up to 4k i can go past that so ima do a tune up fuelfilter spark plugs wires hks airfilter its a 87 t2 just got the car im finding alot of little problems here that there but this is the major one thats bugging me if anyone else knows what it might could be let me know. also the previous owner ran it on empty seems like the motor is starving for gas hopefully not the fuel pump -__- thanks for looking

 

When idling the car can you rev the car up to a higher level with ease.

 

no i cant i rev it and goes up very very slow but i found the problem the o2 sensor wire was cut and not connected -__- from the previous owner i went under the car at my shop and see the wire just hanging