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Gas Smell Inside Car/Car Wouldn't Start In Cold

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New User

Jan 31, 2017, 11:08 PM

Post #1 of 3 (804 views)
Gas Smell Inside Car/Car Wouldn't Start In Cold Sign In

Hey folks,

I have a 2012 Nissan Altima 2.4C with 107K miles. I've been smelling gas inside the car. I took it into a local shop and they checked for gas leaks and didn't find any. They did find that oil was leaking and they replaced the valve cover gasket. They thought this could be the cause (even though I smelled gas, not burning oil).

The gas smell persisted. A few weeks later, the temperature dropped significantly and we had an ice storm. My car wouldn't start for 2 days (car was turning over but the engine would not start). It finally started once the weather warmed. I thought this could be related to the gas smell and could be a sign of a bigger problem. I also noticed the coolant was low and down to the minimum.

I took it into a Nissan dealer for a 2nd opinion and told them about the gas smell, and they were convinced it's a bad fuel pump. They said it's the most logical reason for smelling as inside the car as it sits under the back seat. However, based on the research I've done online about symptoms of a bad fuel pump, this doesn't sound like my problem.

Can anyone provide any insight here? Is the gas smell inside the car related to the car not starting when the temp dropped? Would low coolant play a role also? Or could I have multiple issues going on with my vehicle?

Ultimate Carjunky / Moderator
Discretesignals profile image

Feb 1, 2017, 5:34 AM

Post #2 of 3 (786 views)
Re: Gas Smell Inside Car/Car Wouldn't Start In Cold Sign In

They need to find the source of the fuel vapor leak. Did they pull the fuel pump cover off and look to see if the top of the fuel pump sending unit is leaking? They need to do some more detective work.

Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Feb 1, 2017, 6:53 AM

Post #3 of 3 (782 views)
Re: Gas Smell Inside Car/Car Wouldn't Start In Cold Sign In

Yes, gasoline evaporates very quickly but it usually leaves a stain. You could easily have a leaking fuel injector with the air conditioner pulling in the vapor smell.

It most likely only leaks with the engine running and will have to be inspected that way.


We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

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