Hello first post everyone how do i go about testing my camshaft sensors on my 2007 Nissan Maxima I have had trouble starting it lately. Items changed so far new fuel pump And fuel presure regulator, still having issues with it starting on the first try take about 3 or 4 times before it starts, once it starts it drives just fine.. What can it be???

 

Welcome aboard . Did you check starters & alternaters too .

 

yes they have been tested and are in good working order cranks over strong but does not always start on first try. no check engine light as of now.

 

Here s a link you can look at :
Hope it will help you .

 

did replace the 2 camshaft sensors and even this did not fix the issue...mmm
sat around and scatched my head had a beer. decided to take out the fuel pump assembly again and exame it and figure out what was going on... decided to connect foot of fuel hose to it and blow some air threw it to see if there was a leakdown taking place,, good thing there was seams theres some type of rubber plunger on the bottom of the fuel pump assembly that was was not sealing correctly due to some dirt in it ( you can see this little rubber plunger if you turn your fuel pump assembly upside down) cleaned it out now im on day 3 and no starting issues

 

Great work , but I liked it when everything was outside the fuel tank ( pump , filter ) was much easier to work on the car .

 

Good news , SES light on , got one bad Cam Sensor diagnosed yesterday .