Hello, I'm new here and not the smartest person when it comes to ATV's and iv'e got a 2004 foreman 450 Es. I haven't touched my 450 in about a week and this morning started it up but a few seconds later it died. I tried again again and again and it wont start at all now. If you guys have any suggestions let me know, thanks! The recent stuff Ive done to it are :
i changed the spark plug today and still no start
half of the fuel probably is about a month old and the other half is a week old if i was to guess. i looked at my fuel line to the carb and it looks clean
battery is a month old
air filter is new
oil change and filter is a month old
The atv has been used alot honestly... 6000 miles on her...

 

Does atv have spark at spark plug? You may need to cleaned carb. real good,did you try to use the primer pump on the side of carb to see if it will run while pumpping primer?

 

Yes the spark plug does have spark, its a new spark plug. I haven't used the primer pump yet but i will go try right now while i'm home.

 

Gave it a good or so 10 pumps and still no start. I tested the compression by pulling on the recoil starter and its pretty tight. I don't know what I'm missing.

 

Did the spark seem or look pretty hot?

 

Yes

 

It was reasonably hot but not overly hot

 

Open the float bowl drain screw and make sure gas drains out a a decent rate.
You can drain it into a plastic water bottle.

 

Well guys I bought a cheap chinese carb and replaced the OEM with it and it runs like a dream! The chinese carb is just temporary till i have time to fully clean the OEM carb.