Sat for a year, now it's Running bad! Any suggestions?

[XRoK]

I have 2013 RT Limited and have less than 10K miles.
It's been sitting in the garage for a year since I ran last time.
Now it is running really bad, Remove spark plugs and one cylinder is running very lean.
I have replaced the Spark Plugs and change the oil and oil filter.
The closest dealer is 3 to 4 hours from where I live, so I am attempting to fix myself. any suggestion would be appreciated.

[BLUEKNIGHT911]

I have 2013 RT Limited and have less than 10K miles.
It's been sitting in the garage for a year since I ran last time.
Now it is running really bad, Remove spark plugs and one cylinder is running very lean.
I have replaced the Spark Plugs and change the oil and oil filter.
The closest dealer is 3 to 4 hours from where I live, so I am attempting to fix myself. any suggestion would be appreciated.

There have been quite a few reports of " Throttle-body issues " I believe BRP even re-placed under warranty .... Hopwever considering the age of yours if the T-B Vacuum hoses have not been re-placed ( get silicone ones ) I would start with fixing that .... There are 100's of posts on this topic ....TWO other things might be issues with the " purge valve " and or the EVAP cannister ....good luck .... Mike

[RayBJ]

Could stale gas be the problem?

[FlyBoy2121]

I XRoK

Change your gasoline empty the tank completely, the octane number is very low.

FlyBoy2121

[Bfromla]

Both & any combinations plus filters including air. Hopefully nothing nested up in there while was sitting

[skip]

check vacuum lines if its running lean

[Wmoater]

Like suggested first drain gas. Replace with 1/2 tank of ethanol free highest you can get. Don’t fill it up, 1/2 tank at tops . Next add 3-4 caps of sea foam. Clean the plugs and fire her up. If she is choppy keep it idled a bit until it gets hot. Rev a view times after a minute or so and you should see some white smoke coming out of exhaust. It will clean up after idle and reving a bit. Don’t constant rev, just blip it, here and there until you see some good white smoke. Clean plugs again and after first full tank of gas after all the sea foam is gone. If not cured then filter and lines.

[XRoK]

Thank you for the advice. with that

I replaced both fuel filters, and drain the tank and fill it up 1/2 way with premium (I normally use this one) and a little bit of seaform.
Clean the throttle body much as I can without removing it.
Now it runs like a spyder again.

[Bfromla]

Update??