I’m getting random misfire at idle like one hard knock then every thing is ok. I also have no MIL light or retrievable codes. I checked for vacuum leaks don’t see any. Change out some old vacuum check valves. Replaced oil breather hose had crack. I Changed timing sensor, timing belt and fuel filter fuel pump died changed out. The old fuel filter had something rattling around in it is that normal? Also when I get gas no matter where, 91 octane only the car idle stumbles about 5 minutes after fill up then smoothes out after a mile or so. EVAP purge valve clicks some times? Haven’t check EVAP canister for saturation. Fuel regulator? ”haven’t checked fuel pressure” car was not starting after sitting for week end hard start took 3 to 4 tries then starts up ok for some reason that is not happening now?
NEW ADD 4-16-2012
found my PCV is not working will get new on from indie shop for 20 buck not bad.
hope this fixes it