I'm having cold start issues with my 2003 Mazda Tribute ES 2WD but the car runs fine otherwise. The battery is 9 months old and I had it checked recently. It will crank normally but not start on the first try if the fuel tank is less than half and has been sitting for several hours. Starting the car isn't a problem if I pressurize the system first by turning the key to the on position for a few seconds, turning it off for five seconds and then start the car. The fuel pump does make a humming sound for a second or two when the key is in the on position and shows no symptoms of going bad while driving. I replaced the fuel pump relay and had the fuel system flushed and the filter changed with no results. Are there any other issues that can cause a lack of fuel pressure at start up other than the fuel pump itself?
Thanks in advance for your help.
Thanks in advance for your help.
Aug 29, 2013 at 1:50 PM