[jearlc]

Hello all. Have a 2014 Rancher that I bought in 2016. Had 2 miles on it. Now has 196 miles. had it serviced at 100 miles. Has always ran fine up to last weekend. going up a pretty long hill in 5th gear and near the top it shut down then spit and sputtered then back fired. I stopped and it idled perfect. headed back home , about 3 miles, and it would do good until I got in a hard pull in 4th or 5th gear. Any help is appreciated.

 

[SamUK]

When was it last serviced? Fuel and air filter could be all it is. Are there any fault codes showing in the display?
I’d replace fuel and air filters along with spark plug and see how you get on.

 

[M_Quick]

Any chance you just needed to downshift to 4th, going up that big hill in 5th?

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[retro]

I suspect that it has sat for long periods with rotting fuel in it. We see this issue a lot here... the 420s have wimpy fuel pumps that overheat and fail while pumping rotting fuel through the filter/system. If this is the case, then the entire fuel system will need to be flushed & cleaned out. The fuel filter will need to be replaced and if the pump is failing (fuel pressure should measure between 48-53 lbs) that will need replacement as well. The injector will need a cleaning too. Its a big job that requires the person to be thorough. Half-hearted efforts are rarely good enough. To prevent this from happening do not allow fuel over 30 days old to remain in the tank. And don't ever put any ethanol-laced fuel in it.

You can find a copy of the service manual for your Rancher linked in the manuals thread HERE.