Engine Performance problem
1989 Chevy Silverado V8 Four Wheel Drive Automatic 292000 miles
" I have an '89 Chevy 4X4 1500 w/350 and auto trans. It used to get good mileage, 17-19mpg and now it is doing very poorly 1/8 of a tank to 30-35 miles. I have replace the complete fuel system from the TBI to and too include the tank. I have checked all the sensors and they seem to be in spec. I have installed new injectors and regulator in the TBI. But hot or cold, it stills smells rich coming from the exhaust. I really could use some help here. &Quot; All fuel lines and the fuel pump have been replaced. Checked for intake manifold vacuum leaks a TBI and heads. No change in idle.
Friday, November 27th, 2009 AT 5:15 PM