Quote:
Originally Posted by BrendenZ34
Alright so I have stored my 370z this winter and I a. Afraid the gas has gone bad somewhat. It rough idles, and doesn't sound quite right in the exhaust. Almost a little bit choppy. I saw this thread and was wondering if anyone has any idea on how to go about fixing the issue. It's a 2019 with 30k miles so spark plugs seem unlikely. There was no vacuum leaks. I was just wondering if anyone knew how to go about diagnosing that and potential fixes.
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I would simply siphon most (not all) of the old gas out of the tank. You can keep the siphoned gas since it’s perfectly fine for lawnmowers and such.
I would drive the car to the nearest gas station and fill up the tank with fresh gas, and go for a long highway drive. This should solve your issues.
Next winter prior to storage, fill the tank to the top with ethanol free gas (if possible) and add fuel stabilizer.