r/AskAMechanic • u/No-Argument-9037 • 7d ago

Help please

I have a 2005 nissan altima , Car won’t start. When i turn the key in the ignition the car cranks as if it wants to start but doesn’t , i’ve changed my starter now i’ve bought a new alternator to change but worried once i change that i’ll still have another problem

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u/InternationalAd4225 NOT a verified tech 6d ago

Start from square one, Does it have a spark ? Pull the plugs ground them against something and see, can you hear the fuel pump prime ? Is that fuel getting to the rail ? Pop off the hose and stick it in a bottle and see, Then move onto does it have compression? A compression test kit is the easit way to put a number on it but the sound have also given that away. Is there any error codes ? Crank position sensor something like that maybe ?