Big Horn 400 Explorer won't start

[Bob Williams]

My son has a Big Horn 400 Explorer UTV that won't start.  He pulled the fuel line off after the filter and there was fuel flowing.  The spark is good.  He said before it quit it would start to bog down when he drove it up an incline.  The plug was dry.  We tried to pour a little gas into the carb but it may not have been enough.  We sprayed starting fluid into the cylinder and it still didn't start.  It didn't sound like it even tried to fire.  Fuses look good.  It is a 2020 model we bought last November so the carb shouldn't have any gas gelled to plug it up.  I think the next think I'm going to check is the compression just for giggles, shits and grins.  Any suggestions what else to do next?  Thanks.  Bob

[TapBoss]

Check  for corrosion on relays, fuel pump, etc.  Seem to remember someone having a similar issue. 

 

[Bob Williams]

TapBoss, we ended up tearing the engine down and found the bolt holding the sprocket onto the camshaft for the timing chain worked its way out.  The rest is ugly as a dead hog.  The valves and pistons were obviously damaged beyond repair.  Warranty was going to replace the UTV but imports have been blocked but a new engine was received and replaced.  Power Sports are slow getting payment to the service center.  Right now we are lying in wait with baited breath patiently awaiting the service center to be paid so I can get the UTV back.

[TapBoss]

Ouch! Tough break with under a year on it.

[Bob Williams]

We finally got it back today.  We are good to go.  

[Joan Guerin]

My Bighorn won't start.   No click, no nothing, but lights on led panel blink.   I have a new battery, so it's not that.   Last time he battery cables had loosened, is I tightened them.   They don't seem loose now.    Any ideas?