Hi i have a 93 infiniti g20 with about 170k i just changed the spark plugs and i got platinum tipped cause thts what the car needs and i changed my rotor and dist cap but now when i turn on my car it idles lower then 1000 rpms like its ready to shut off and it has no power at all it barely hits 35 mph goin up hill it does like 5 mph with the gas pedal all the way to the floor! i checked my plug wires in the dist cap all my firing order and everything is right but idk what could be the problem someone help please