Truck sat for a month and has rough idle

[rwolfe546]

Truck sat for a month and now has a rough idle, is there something i could add to the gas to see if that fixes it ?

 

[securityguy]

Add a good quality fuel injector and system cleaner and then take it out and get on it hard to see of you can burn out the issue. If you're trucks going to sit for a while, I highly recommend Sta-Bil.

 

[Burnzie]

Sea-foam, I use it in everything, but you will need to use a funnel 2 move the little thingy otherwise it will just pour onto the garage floor .

 

[Sascwatch]

Sea-foam, I use it in everything, but you will need to use a funnel 2 move the little thingy otherwise it will just pour onto the garage floor .

There should be a funnel under the passenger seat with your jack.

If your tank isn’t full it probably wouldn’t hurt to add some fresh fuel. With the ethanol in today’s gasoline it is a magnet for water and doesn’t last as long.

 

[iLikeTurtles]

I put a big ole cam in her for while you was away.....

just kidding. Take it to dealer, sitting for a month shouldn’t kill a new truck.

 

[securityguy]

I put a big ole cam in her for while you was away.....

just kidding. Take it to dealer, sitting for a month shouldn’t kill a new truck.

You are correct in that it won' "kill" a new truck...or any truck for that matter. But the gas can and will go "bad".

 

[iLikeTurtles]

You are correct in that it won' "kill" a new truck...or any truck for that matter. But the gas can and will go "bad".

It should throw a CEL if it is continuously running rough from bad fuel. OP did a CEL show? How bad do you mean by it is running “rough?”

 

[rwolfe546]

No CEL. The truck was at the body shop waiting on a new front passenger door because someone hit it.

 

[iLikeTurtles]

Try the cheap fixes to resolve potential condensation, but with the truck being rather new (I’m guessing it’s still under 36k) the dealer should be able to diagnose and resolve something like rough idle or running if the fuel additives do not take care of it.