g20 doesn't start...need help desperately

[mohit_s]

I bought a 2000 infiniti g20 lately. But it suddenly won't start up one fine morning. It drove without any flaws earlier. The mechanic mentioned that it was a problem with the starter and changed it. After that he mentioned that the fuel pump isn't working as the engines are not getting any fuel. Manual fuelling would start it though; so changed the fuel pump. Still it's not running. What he says now is that the injectors are not firing/opening due to some reason. He checked the computer and says that there are no hotspots. He has no clue other than just experimenting why the injector isn't opening. Again, manual fueling will start it. I am severely confused what to do and need some help from you guys! Please help. Thanks..

FYI, I had put in regular gas the night before (>13gallons). The parts changed till now have been OEM parts. Please help!

[Q45tech]

Just bought, now problems is a regular post, WHEN a expert on the model was not paid to do a few hour inspection test and diagnosis BEFORE you purchased.

Sound like you are not having the dealer do the work now.............mechanic is a dirty word when TECHNICANS should be involved.