Post by
evildky »
https://forums.nicoclub.com/evildky-u13100.html
Sat Jan 24, 2015 9:03 am
How are the plugs and wires? Perhaps your "miss" is an actual misfire. Old plugs and wires and cheap and easy to swap, another common cause of misfires in the L28's is the injector clips, especially on the turbo, the injector clips and pigtails get heated and dried out so much they become brittle and can break and loose connectivity, give each of them a wiggle and see if the engine sounds any different, replacement pigtails are cheap and just a matter of soldering or crimping them on, the difficult part is sometimes you have to cut back into the harness a bit to find good wire.
A real common issue for these cars is the CHTS. basically if it or it's connection goes (same pigtail as the injectors) the ecu faults to cold which causes a rich condition. This rich condition is what you want for a cold stat, but once warm can cause the engine to flood, the )2 works has the same effect but to a lesser degree. You can try unplugging each fo them one at a time for a warm restart and see if it changes, if the unplugged sensors have no effect on a warm restart they aren't working.