I have a 2006 altima and when I try to start it up it takes like 3 to 5 minutes before it cranks,I were told it could be the fuel pump or the fule sensior and then I were told today it could be the timming chain so what can I do to resolved this issue?

. Check for codes.

. Test all under hood and under dash fuses with a test light or multimeter.

. Camshaft Position Sensors and Crankshaft Position Sensors have been problematic on Nissans. I had to replace the Camshaft Position Sensor on a 2006 Nissan Altima for a lady a year ago. After I replaced it, it fired right up. Be sure to check for codes first, however.

If you can hear the fuel pump in the gas tank run, when you turn the ignition switch to ON, it's likely okay. I doubt that the problem involves the timing chain.

This link may help:

https://www.askmehelpdesk.com/cars-t...-s-556425.html