white smoke/runs rough when warm
91 with about 250k miles.
Last Oct I replaced an injector and tore the small oring when I installed it. This caused intermittent problems. I tried to buy a replacement oring but I replaced it with an oring that was too small and I flooded my engine with gas. I then drained about 2 gallons of gas, replaced the oring, and chained the oil. I got the car to run again (after cleaning the plugs about a dozen times) but it is still running a little rough when the engine runs at about 3k RPM and blows white smoke out of the exhaust. I have read on here that white smoke = coolant which means a blown head gasket.
I had a friend (who is a mechanic) come over to look at it. He checked the timing and confirmed that some of the plugs are not getting power when the engine revs up. He also did a compression test. All of the cylinders tested between 120 and 130. I know that is low but the engine is old. I assumed those numbers are acceptable.
My friend thinks the white smoke out of the tail pipe is excess fuel but from what I have read on here excess fuel should be black smoke. Anyway we tested the fuel pressure and it came in at 40 (which is spot on).
1. Could the white smoke be fuel?
2. If I have some electrical problem (I'm going to replace the distributor cap, rotor, and plug wires today) could that cause the white smoke (due to the injector firing and the plug skipping a few then firing with too much fuel)?