David, Everything that David said needs to be done. Again, The F.V. will run at at a pre set level 80/20 till the 02 sensor heats up to send the voltage to the Lambda ECU to change the fuel pressure in the lower chamber of the fuel distributor via the FV. Only after the car heats up should you notice the FV slow down. You might have to get the car out and drive it. Setting at Idle to long may contaminate the 02 sensor and you need to do a burn off. David, When you replaced the water pump, and had the intake off did you replace the Lambda thermal switch in the internal water pipe . If it isn't working the Lambda unit will also tell the FV to run rich. When I replaced my water pump the other day, I replaced all the components in the pipe. The only other thing I can think of is the Full throttle switch. John Hervey www.specialTauto.com t --- In dmcnews@xxxx, Delorean17@xxxx wrote: > Hello list, > I finally got my engine back together after replacing the water pump > hoses and gaskets. My car has always ran rich since I bought it (only 15 > miles ago) > > Thank you > David > #2496-