[Bryanabernathy]

I have a 2009 Honda TRX 420 fuel injected. It starts and idles perfectly. Revs good in the garage. When i gun it it takes off thru a couple shifts just fine. Then it starts actling like its running out if fuel. I can feather it to keep running most if the time. Sometimes it just dies and sometimes a back fire. Typically it fires right back up quick. Ive ordered a fuel filter kit. In the meantime i left filter out and installed inline fuel filter, drained tank, added new clean fuel with injectir cleaner additive. Seemed to be slight improvement but then same symptoms back. Any suggestions?

 

[Z7What]

Im new to the ATV world but with that being said im not new to working on vehicles/engines. My guess is that its a ignition coil issue. If its idling and starting fine and running through the first couple gears then i wouldnt think its a fuel issue. I would check to make sure your ignition coil has good connections, putting dielectric grease on those connections is always a good idea. Ive worked on more than one vehicle in the past that the coil would "break up" when under a higher load, it would start, idle and drive perfect even at WOT through first but once into second it would start to act up.

On a side note, making sure your injector electrical connection is fully seated and not dirty isnt a bad idea either.

Wayne

 

[Freedomflyer]

That sounds like an issue I had with one of my 2013 Ranchers, i put a new fuel pump in it and that seemed to take care of the problem. It was fairly simple to do except for one silly little connection. There's a little green clip that is very stubborn to release, I spent more time trying to get that thing loose than I did installing the new pump. Hope that is all it is, good luck.FF