My 1993 Camry V6 3.0L, 205,000 km is having difficulty starting after being fully warmed-up. When I try to re-start the engine after it is warmed up there is starting hesitation and it sounds like the cylinders are firing sporadically as the engine stutters until it fires strongly after repeated engine turning/attempts. Cold starts work perfectly and the car never has problems with idling or stalling (engine & car as whole runs like new otherwise). It starts NORMALLY up to ~30 min after sitting warm, then begins to stutter when a start is attempted and the hesitation reaches its worst point at about 2 hours. After 4 (now cold) it starts again perfectly. I have recently done a fuel injector flush, replaced the plugs (NGK iridium), dist. cap & rotor, ignition coil and cleaned the throttle body & IAC valve which improved cold starts, but the warm start problem continues. My fuel & air filter and battery are relatively new. I am trying to find the source of this problem but it will cost me plenty to replace unnecessary parts. Could you please give any Recommendations? Thanks!
Mar 30, 2007 at 4:24 AM