dr-rjp

iTrader: (4)

Here's a problem that really stinks:

For the first time ever, I'm getting the smell of raw gasoline upon start up, and it happened right after I decided to try mixing equal parts of Chevron 87 & 93 octane gas (to yield something equivalent to 91 octane).

Now, it may be because the 87 octane gas has a very, distinctive and strong smell that the 93 octane gas did not have, and I just did not notice it before.

Or, perhaps, Regular has a higher sulfur content since that is what it smells like?

Maybe the gas station's underground tank of Regular was on the low side and I got a lot of residue?

From what I know about smelling raw gasoline on start-up suggests there may be a problem with clogs or leaks in the EGR system, clogged or malfunctioning injectors, leaks in the manifold or Y-pipe, or just running way too rich.

For whatever the reason, the smell is there the day after I pumped the gas, and that is why I suspect that when I run this gas out, and fill it back up with straight 93 octane from another Chevron station, the smell will be gone.

Anyone else notice a change in odor (or an increase in odor) when changing grades or brands of gasoline?

Nissan 6

I bought my car from someone who used 89 octane gas then I started to use 93 octane gas and have not noticed anything different.

dr-rjp

iTrader: (4)

Well, as expected, I filled my tank with 93 octane -- this time I used BP, and the raw gas smell is gone.

Nissan 6

Yes thats what I used/use

DUBCAPS

I just switched to 93 and havent smelled the gas smell. I would always smell gas using 87. I would smell gas after driving around for a couple minutes. It would come in thru the air vents.

2 Da Max

iTrader: (2)

that always happens to me.. when i start the car for the first time in the morning and i pull out the driveway i smell it hard.... maybe its the fuel filter??

RobUsaf81

Gas smell can be a sign of injectors going, just a thought.

dr-rjp

iTrader: (4)

Sometimes, the harder is your car to start, the more the fuel/air mix accumulates, and when the engine finally does fire up, not all of it ignites.

In other words, unburnt gas fumes get blown out the exhaust pipe, and if it blows back in your direction, it smells like raw gasoline.

I do recall now that my car harder to start after I had put in that bad batch of gas I bought. Now that I've changed the gas, it cranks in one or two turns of the starter with no bad gas smell.

2 Da Max

iTrader: (2)

what gas do you use? and i guess you are right about the unburned fuel, makes perfect sense

DAVE Sz

iTrader: (2)

You have a small leak in your fuel system somewhere. I don't see how the quality of fuel could cause a bad smell unless your can't can't properly burn it off. It would be the car in that case not the fuel.

SNOMAX

iTrader: (14)

I had the raw-gas-smell problem once. But it was due to a small plastic connector under the back of the car, near the spare tire well. It's where all the gas fumes collect--there's about 4 hoses on this connector. One was broken off. I'll try and get a pic if I can. It may be another place to look and it's pretty obvious once you know what you are looking at.