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Hi all looking for some help!
I have a 2011 Brute Force 750 stock no mods
I went through mucky water about 3/4 up my tires and started shooting white smoke out exhaust had muck in my air box. I shut it off but it would still fire

I take it home tare the air box out clean it
clean above my cylinder heads
change the oil it wasn’t milky didn’t look bad
changed the plugs they had some dirt on them not to bad though
Put everything back together it turns over won’t fire.
spray starter fluid down to the heads it will spark but not fire.
drained the fuel put fresh in and it won’t fire
So my question is something electronic keeping it from firing that I may have bumped when cleaning it
I know I have spark and air so next would be a fuel blockage but you’d think spraying starting fluid in there it would fire at lest for a second or 2. Anything suggestions would be helpful thanks!
 

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Next easiest thing to try would be compression test. Seeing how you went through mucky water and had dirt on spark plugs you might’ve taken out the rings.

Gotta go slow when going through water. If you said it was only 3/4 up your tires you must’ve hit it pretty fast to get that much tossed up in the breather which really isn’t hard to do on these brutes. I ride in deeper water than that often but know I gotta go slow to avoid this problem.
 

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No compression due to stuck rings.
Your description is so vague it's hard to tell what happened:
You said the plugs were dirty; did you mean with carbon (normal), or with mud.
You must have had water in the oil, even if it wasn't milky.
Soak the cylinders down with penetrating oil and let it sit in hopes the rings will free up.
 
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