2004 Oldmobile Alero with just under 50,000 miles will not start.?

Question:
You can hear it turning but there is no fire. I've had a couple of people look at it so I do know what is NOT wrong with it. The battery, fuel pump, sensors and components are all fine. It is getting gas just not the fire. And it is not bad gas. Here is the tricky part: this is the 2nd time in about 6 months it has happened. First time it started after someone removed a plug and put it back in (assumed it was just loose), 2nd time they tried the plug and varies other things to start it and it didn't work then the next day it did. One idea was that an air valve (not sure of exact name) was staying open and allowing too much air to go through and maybe it was somehow closed, letting the car start. Any other ideas would be greatly appreciated.

Answers:

I need to change the oil in my 95 Isuzu Rodeo. How many quarts of oil do I need.?

The real reason the car will not start is because of the security system. The security system disables the spark and therefore the car will not start. Replace the ignition switch and you will have a reliable car again.

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My car specifically indicates Mobile One synthetic oil. Can I substitute?

spark plugs/spark plug wires also check the connection to the battery.try twisting the connectors on top of the battery a little, especially if you have any corrosion at the top

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Would anything happen if I spray paint the muffler tip?

I would look at the component your buddy unplugged the last time. if there is a way to test this component i would do it first. also check the wire to that part to make sure it's not shorted. good luck

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Engine cranks but has problems turning over?

pull no.1 plug wire off plug and roll motor over to see if you have spark. if you have spark go to see if you are getting fuel to the fuel rails on fuel injection system, if you are you could have a bad injecter. I recommend that if you get it started again that you take it to auto zone and have them plug a disgnostic machine up and that could tell you if you have a voltage or computer problem.

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Mondeo tdi saloon 2002 cross member mounting?

this is so easy but im tired and going to bed Im thinking ignition coils but havent enough info to be clear
need to know what engine

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