“” It makes a sound like it is trying to turn over, but it just doesn’t have that last spark to start…"" This is a bit confusing… Are you saying that you turn the key and the engine turns over/cranks…but will not “run/start”? OR are you saying that the engine cannot “Crank”
It goes like this…you turn your ignition key to the RUN position…then on to the spring loaded CRANK position…it turns over/cranks the engine…and THEN if youre lucky…it STARTS and RUNS for you…
SO…if the engine is turning over and will not start…then it is most COMMONLY ONE OF TWO THINGS…Either it is not getting fuel…or it is not getting spark…
NOW…if you try to turn it over…and it sounds TIRED…SLOW…like Rrrrrur Rrrrur rrrur…slowly cranking…like it doesnt have enough battery power to spin the engine fast enough…THEN THAT…would be a battery/charging issue…or not having enough voltage to crank the engine fast enough. This gets us to say make sure your batt connections are clean and tight…but I don’t think you are describing this issue
I THINK you are trying to say the first example…it turns over/cranks just fine…but is unable to start…and in that case it may be having a fueling problem…this condition can be caused by a Fuel Pump Relay not supplying power to the pump due to dirty contact points inside the relay…(THIS is actually quite common)…locate your Fuel Pump Relay under the hood in the fuse box found there…find the relay…and SWAP IT with an identical one that powers something else…if after you swap them the issue is resolved…you found it…
Another fueling issue can be that your fuel pump motor gets stuck…If this does the “no start” condition again…locate your fuel tank…and BANG ON IT…like with a 2x4 piece of wood what this does is Jar/vibrate the fuel pump in the tank and many x it will jog the fuel pump motor into spinning again…IF you do this experiment and the banging the tank trick works…then its your fuel pump getting “Tired”…
Either the fuel pump cant get power…or the fuel pump is getting stuck…THESE cover the issue IF it is a fueling problem. THE OTHER…and EQUALLY IMPORTANT cause could be that you aren’t getting spark to the plugs…that’s a whole other bag of tricks… IF she cranks over and doesn’t start…go back and actually SMELL your tailpipe…LOL…I know sounds silly…but if you smell unburnt fuel smell…then it is not getting SPARK…and we can go from there You have some homework to do…Let us know
Blackbird