My 1999 Civic won't start

My '99 Civic sat in the garage for 2 weeks without starting. When I tried about half an hour ago to start it, it simply didn't start. The battery seems OK as everything that needs the battery works properly,
including headlights.
The car was starting perfectly before I left it for this 2 week vacation, so I am puzzled as to what could possibly be the problem.
Any ideas where and/or how to start troubleshooting?
Thanks, Sam
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need a better description of what "won't start" means. Does it mean that it turns the engine over continually and the engine won't start? or does it mean that when you turn the key, nothing happens except for a possibly a click?
Option 1 (turns over won't start) - I would try pressing the gas right to the floor. This could be a flooded injector, and pressing the gas pedal all the way to the floor will help to clear this out. Or it could be main relay, use google to check on this. This is the wrong time of year for that type of failure though, usually it is caused by heat.
Option 2 (won't turn over) - 2 things, battery (which could have enough juice to run all accessories but not your started) needs to be load tested. Or your starter is fried.
Let us know. t
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loewent via CarKB.com wrote:

======================================= If it's option #1, you have to _HOLD it to the floor_ while cranking the engine for up to 15 seconds at a time. This is in the owner's manual, and it always happens after the car has sat overnight, or a weekend. I had it happen to me and it was very confusing that a vehicle could be flooded by sitting in the garage over the weekend . . Search google and you'll find the full explanation.
'Curly'
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motsco_ wrote:

Followup: It was indeed option #1 and your tips were right on target. I just held the gas to the floor for a few seconds while turning the key and bingo! - the car started as if it never sat for two weeks in the garage. Thank you so much!
Sam
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Then you have a leaky injector(s) due to disuse.
Go to your favorite auto parts emporium and get a couple of large bottles of Chevron Techron fuel additive. Put one in on a full tank, run that down, then fill up and add the other.
A hour-long, hard blast up and down the freeway once a month will help keep this from happening in the future.
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