Power not up to normal, Faulty acceleration
I own a 1981 380 SEL. This is my problem: The car was sitting for some time (supposedly in running condition before it sat idle)
The car wouldn't start, so I did some trouble shooting and found it had a faulty electric fuel pump.
I R & R the fuel pump and the car starts just fine. Now we have the problem. With the timing all the way advanced, the car will start and idle just fine. Once I press the accelerator down to increase fuel and air mixture, the cars just bogs down and dies.
I have replaced the fuel pump twice, checked the overvoltage protection relay, changed the fuel filter, spark plugs. Checked the idle control solenoid, frequency valve,and electronic control unit.