I recently purchased an 04 Ford Taurus with 6 cyl OHV engine. After a short period of time the engine began to run and idle rough. It was later determined that the gas had turned to varnish. I removed all of the old gas and replaced with new. The car is running much better but still has a rough idle and spark knock. The codes read sensor malfunctions with one reading too rich and the other too lean. Where can I go from here.
You can pump it out if you know what you are doing and utilize the fuel pump to do so. I also replaced the fuel filter
You can pump it out if you know what you are doing and utilize the fuel pump to do so. I also replaced the fuel filter