[TargaT]

OK, so I have it running fine when cold. As the car heats up it begins to run very poorly. What I have discovered is that as it heats up the timing begins to retard. The problem begins at about 200 deg and becomes really bad as it approaches 210. At this temp it retards about 5 degrees at idle. What controls the timing? and what could I check next? So it appears the retarded timing is causing the engine to heat up? This takes about 20 minutes of spirited driving.

Thanks, Joe