Well I have 2 1989 300Es and the one my girlfriend uses is tough on cold
and sometimes warm startups and is getting really shitty fuel economy.
Whwn you start is you have to hold your foot down on the gas pedal. The
car does not burn any oil and runs fine once you get moving and warmed up.
In the past year I replaced the cap and rotor, plugs, wires, air filter,
ran numerous cans of chevron techron in it, and I also replaced a few
other small things. I had a 94 toyota camry that ran like carp and was
rough starting, I replace the o2 sensor and all was well. Any other
ideas Tiger?- Chuck, Seaside NJ