I adjusted the timing to about 10' and dialed the idle down to 1000rpm but the car lacked power and would flatten/surge when accelerating under load above 2800RPM or so. I tried to adjust the timing via the same route, but dialing the screw back all the way only lowered RPM (in my Autozone Sunpro Tachometer) to about 1000rpm (it was at about 1200rpm). When I first checked timing per FSM and the "sticky thread" instructions the timing was at 25'+ BTDC!! (yes, about 5 past the 20 mark). Completely cleaned out IACV (which didn't change anything). I tested the following per FSM (voltage and Ohms or vaccuum) and they appear fine: IACV (ohms and clicking), coolant temp sensor (some corrosion on sensor and plug), injector ohms, TPS ohms and 0' voltage, power steering oil pressure sensor, (new) EGR + PCV. I'm using a relatively cheap timing gun from Autozone, and a Sunpro Tach from same place.Īfter failing the HC for the 3rd time, I did more and more inspections and finally found oil in the distributor (internal oil seal shot, need new one). The air conditioner belt is cut, the compressor was dead anyway. 105k miles on the car, 65k on engine (previous owner replaced engine at 35k miles). The car's performance has not changed at all in the last 4 years. I failed the TX inspection with high HC (but the NOx is fine after past repairs). I'm in a 1992 sentra, standard GA16DE - B13 engine.
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