Hello, I purchased a 2003 350 Z around a year ago and I’ve only been able to drive it for about six months of that time. I was driving not too long ago and the engine completely sputtered out and died. It will turn over but will not start unless starter fluid is sprayed into the intake. But it dies immediately. I have replaced the fuel pump, both cam shaft sensors, the Crank sensor, and the mass airflow sensor, as well as repairing the dash wiring harness. (Previous owners installed a viper security system with some very sketchy wiring but I have since been removed it and repaired the wiring) I am really at a loss here and don’t know what to do, please help

 

Welcome!
Have spark plugs been changed?
" " air filter " " ?
How old is the fuel?
Have you ckd for codes?

 

Thank you! I had just filled it up when it’s sputtered out. I haven’t replaced the spark plugs but I will do that tonight when I get off work . As well as checked for more codes and get back to you. I took the air filter off when I replaced the mass airflow sensor just to make sure that wasn’t it still nothing.

 

Any other ideas?

 

Didn’t mean to send the 3rd reply sorry new to the site

 

How many miles?
Check your plugs for oil-fouling. Valve covers that are old and leak will foul the plugs.

 

When you turn the key on (2 clicks) do you hear the fuel pump run? It should prime for a couple seconds then shut off. Have you checked the fuel pump fuse and relay? If the pump jammed it could have easily blown the fuse or overheated the relay. When you disconnected the alarm did you return it to stock wiring? Some alarms have a disable function that will kill fuel, and if you don’t reconnect the wire to factory it will cause issues.