[andrew70005]

So my bike has been sitting under a cover for half a year and I just started to attempt to ride again. The gas has been completely dried out so i put in some new premium gas in. When I crank it, it will turn but wont start up. I tried to jump it with my lawn mower and it started up. So my assumption is that the battery is dead. I replaced it with a new battery and I am still having a hard time starting. Sometimes i have to rock the bike back and forth to get it to crank up.

What could be the issue?

 

[guitarguybs07]

If it was sitting that long and somehow your fuel evaporated...I would think the problem is with your fuel system (Fuel Injector, Fuel Pump, Fuel Filter) at this point rather than electrical/starting.

 

[airhead83]

+ 1 with Guitarguy..... If it runs OK when it starts, I'd not worry much until I ran through a tank or 2 of fuel. Possibly add a fuel conditioner/fuel injector cleaner to the fuel now. It won't hurt and may help speed up the cleaning process.

 

[andrew70005]

Yea, it runs fine once it is started. I been leaving the bike on idle(for a couple hours) to run down the current gas tank to maybe clear out any blockage. So far it has not fixed the problem. I will try fuel injector cleaner next

 

[Gromit]

Old fuel in the system will leave a deposit of gum. Nasty stuff and not easy to get rid of. Run some injector cleaner through for a couple of tankfulls of juice.

 

[King CobRa]

I also have a 2016. I am still on the stock battery. A few times I let the bike sit idle for weeks and the battery drained down but by charging it back up using a 1 amp trickle charger such as Battery Tender Jr it was back to normal.

I also once had an issue of bad gasoline and I ran some Techron fuel treatment from Walmart thru it for the next full tank and the problems went away. Actually Red Line SI-1 is the best fuel injector cleaner, I would buy that brand preferred.

Just for fun I recommend you to slow charge the original battery and then bring it over to AutoZone or Advance Auto Parts and they will do a free load test on the battery and can advise you if it is truly out of service.

I bought a brand new battery last time and the brand new one is still sitting on my shelf after discovered that the original battery was still healthy enough to continue.

 

[andrew70005]

I got the bike to start up consistently after using sea foam and techron. I took the bike for a test drive and the engine shut off on me while riding.
I had to walk it back half a mile to my house. It looks like the spark plug got fried so I install a new plug but it would start up for two to give seconds then shut off.