Just finished replacing the timing chain guides, and thus had to pull the distributor. It starts and idles, but will not accelerate from idle. It seems the ignition is not advancing. I know the engine was on TDC and the rotor was pointing toward the ridge mark on the distributor when I installed it. I marked all of the plug wires so I'm certain they are on correctly. I searched how to connect a timing light on the 560SL only to learn that the car times itself! I'm stuck. I don't know what to check. Any help will be appreciated.