Discussion Starter · #1 ·
I have a customer at work with a 2000 sedan with the spi and I am stumped with a horrible fuel mile problem. We have checked just about everything. She is getting 18mpg highway. We have done a light tune up with plugs wires and coil. Checked compression fuel pressure and fuel filter. Checked pcv system and throttle body for issues. I'm stumped. Anyone come across this or have any ideas. There are no current codes or anything.