View Full Version : Lean Mixture


bobb
09-23-05, 10:47 PM
MY 97 ELDORADO IS HAVING TROUBLE STARTING AFTER SITTING FOR A WHILE. OVER NIGHT IT JUST ABOUT WON'T START. i CAN CRANK IT TILL THE BATTERY DIES. DRIVING AROUND TOWN THE LONGER IT SITS THE HARDER IT IS TO START. DIANOSTIC SAYS THE MIXTURE IS LEAN AT THE o2 SENSORS BUT NOT WHY. I CHANGED THE FUEL FILTER BUT IT DIDN'T HELP. IS IT THE FUEL PUMP? ANY IDEAS?

zonie77
09-23-05, 11:37 PM
Check the fuel pressure regulator. There are instructions in the tech tips section.