WTF? rough idle after refueling (new car!)

InnerDragon10

Yes but I feel we're attributing the initial startup to bad gas... but if it were bad gas id have problems for the entire gas tank, not just the moments after startup at the gas station, no? My existing fuel is probably still whatever I had in there before and not the 'new' gas. Somethings happening by the act of filling up or starting the engine so soon after shutting it off..
Well, only way to tell is to use 'reputable' gas and see if I still experience the same thing upon startup.

jcosta79

No. Because your ECU is pulling timing to compensate for the el cheapo gas to keep your engine from knocking. It's the reason why you can fill up with Regular and you wouldn't notice anything.

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2012 PW NISMO #0559 - GT Spec Brace Kit - Swift Springs - ARK TP & Invidia CBE K&N Intake - UpRev Tune - 15mm Z1 Spacers & Studs - StopTech Slotted Rotors & SS Lines - ZSpeed CMAK with Stage 2 Clutch and Lightweight Flywheel

InnerDragon10

Well, I filled up with Shell gas with less than 50 miles range to go, and there was no hesitation at startup.

Problem solved I guess?

kenchan

yah, probably. ive had bad gas on one of my earlier cars and it too had issues where the car would go into limp mode when i pushed it pretty hard.

i decided to head to a gas station that carried 100octane and mixed it at around half empty. that took care of it for that situation.

jcosta79

I would think so. Spend the few extra bucks on name-brand fuel and you should be okay from now on.

Sent from my Nexus 7 using Tapatalk

__________________
2012 PW NISMO #0559 - GT Spec Brace Kit - Swift Springs - ARK TP & Invidia CBE K&N Intake - UpRev Tune - 15mm Z1 Spacers & Studs - StopTech Slotted Rotors & SS Lines - ZSpeed CMAK with Stage 2 Clutch and Lightweight Flywheel