mperkin4 Posted October 29, 2012 Report Share Posted October 29, 2012 1983 200sx 5 speed. Engine runs well when warm, but when initially started from cold, it will hesitate, stumble, miss when put under load from a standstill. The more gas it's given, the worse it will stumble. The only way to make it move is to gently rev the engine up to 2000+RPM before gently letting out the clutch, and then it will stumble for a while after moving to 2nd gear. Once warm, she's much better with only minor misses in lower rpm ranges. I've changed the spark plugs, wires and the ignition coil (noticed a visible spark from the coil that escaped the wire - weird). PCV valve I've removed and cleaned with 24hours in a cup of varsol. Anyone had this before? Is it an air/fuel mixture issue, or spark? Next move is to replace the distributer cap. 1 Quote Link to comment
jastrunk97 Posted October 29, 2012 Report Share Posted October 29, 2012 Im thinking something wrong with the carb? Fuel pump? Dirty jets? Fuel filter? Quote Link to comment
datzenmike Posted October 29, 2012 Report Share Posted October 29, 2012 It's an EFI car. 1983 200sx 5 speed. I've changed the spark plugs, wires and the ignition coil (noticed a visible spark from the coil that escaped the wire - weird). PCV valve I've removed and cleaned with 24hours in a cup of varsol. Anyone had this before? Is it an air/fuel mixture issue, or spark? Next move is to replace the distributer cap. Yeah to be sure get a new cap. There are 8 wires jammed into a small space so if in bad shape it's very easy for the spark to jump to another wire. AND A ROTOR. The rotor separates two ignition systems the intake and the exhaust sides. It has to be in good shape. Try this first so the ignition can be eliminated as a cause. Timing should be in the 8? degrees Before TDC range. Set the valve lash. These last two are easy to do your self. London. Was there a couple of years ago to a wedding. Quote Link to comment
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