I'm new to the 240 world, and have a question or two I could use help with. I just bought a 89 240sx se fastback and it will not rev past 5500 rpm in any gear, or in neutral. Also, above ~3000 rpm it feels fairly sluggish. It still pulls, but feels choked up. Maybe it's just me, as I'm not used to the torque-rich KA24E(last car was a 200SX SE-R[SR20DE] which needed to be revved pretty high before it would pull hard). I've searched and found a possible cause may be the tranny sensors, but I haven't found any fixes that are specific to the SOHC, and from what I have read people with single cams that remove the tranny sensors are then limited to 80mph. The car came with a brand new fuel filter in the trunk. Could it be that the filter is clogged to the point of starving the motor for fuel above 5500 rpm? I am not getting any check lights, and have not yet run the ecu diagnostic, but was hoping someone else had experienced similar symptoms and could chime in. Any help would be appreciated.
Also, there is smoke coming from the motor when it is revved. If I manually open the throttle body while the motor is running, it will emit a small amount of smoke from the intake side of the motor when the revs are falling back to idle(almost like a BOV, but with smoke instead of noise). It does not smoke at idle, nor does the exhaust smoke excessively. I am unfamiliar with the KA24E specifically, but my first suspicion was that the EGR might be venting exhaust gas to the atmosphere rather than back into the intake manifold. Any ideas as to what may be causing the smoke, or how I might fix it?
Thanks in advance for your help.
Also, there is smoke coming from the motor when it is revved. If I manually open the throttle body while the motor is running, it will emit a small amount of smoke from the intake side of the motor when the revs are falling back to idle(almost like a BOV, but with smoke instead of noise). It does not smoke at idle, nor does the exhaust smoke excessively. I am unfamiliar with the KA24E specifically, but my first suspicion was that the EGR might be venting exhaust gas to the atmosphere rather than back into the intake manifold. Any ideas as to what may be causing the smoke, or how I might fix it?
Thanks in advance for your help.
