90 240sx misfire problem...

Information on the naturally-aspirated KA24E and KA24DE engines.
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BruceJ30
Posts: 85
Joined: Mon Oct 29, 2007 9:01 am
Car: 1994 Infiniti J30 & 1990 240SX
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Just recently got a 90 240sx. KA24E. I replaced the plugs, distributor cap, rotor button, and cleaned the TPS. I can put the throttle in a couple inches and it accelerate fine, but if i go more than halfway or floor it, it goes up to almost 4,000RPM and spits and sputters. What could this be? I'm thinking I need a new TPS, but want to see what others think first.Thanks

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