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CHASZ51 10-17-2018 07:04 AM

Strong gas smell
 
I have a strong smell of gas inside of my C6 and Garage. I know my gas cap seems to come loose and i wonder if that is the cause?

Rich Z 10-17-2018 10:50 AM

Not sure if it applies to the C6, but I believe the C5 has a sort of canister filter used for the fuel vapor recycling system. It is located above the passenger side fuel tank if I remember correctly.

From what I remember, when the filter gets clogged it could cause a gasoline smell. I was looking at all that stuff when I had to redo the fuel lines way back when I had to get rid of the kluge that Harwood did with the fueling system.

CHASZ51 10-17-2018 08:26 PM

Quote:

Originally Posted by Rich Z (Post 205470)
Not sure if it applies to the C6, but I believe the C5 has a sort of canister filter used for the fuel vapor recycling system. It is located above the passenger side fuel tank if I remember correctly.

From what I remember, when the filter gets clogged it could cause a gasoline smell. I was looking at all that stuff when I had to redo the fuel lines way back when I had to get rid of the kluge that Harwood did with the fueling system.

It is going to the shop for a oil change so we will see.

Rich Z 10-24-2018 12:29 PM

Did you ever find out what was causing the gasoline odor?

CHASZ51 11-02-2018 06:39 AM

Quote:

Originally Posted by Rich Z (Post 205516)
Did you ever find out what was causing the gasoline odor?

Think it is the cap. I just placed a order for a GM cap this AM. No leaks anywhere. Smell has got worse. Cap has not been fitting right and comes loose sometimes. I guess they go bad. Fills the whole garage and inside of the car with fumes.

navy2kcoupe 11-02-2018 07:56 PM

Most times a bad or loose gas cap will cut a P0430 code.....
Andy

CHASZ51 11-02-2018 07:57 PM

Quote:

Originally Posted by navy2kcoupe (Post 205575)
Most times a bad or loose gas cap will cut a P0430 code.....
Andy

I get the light off and on. Not sure what else it could be if not the cap.

Rich Z 11-03-2018 02:21 AM

Is your car hard to start after it sits for a while?

CHASZ51 11-03-2018 08:21 PM

Quote:

Originally Posted by Rich Z (Post 205578)
Is your car hard to start after it sits for a while?

It is a DD and runs perfect. Once the gas tank gets lower the smell is lee.

Rich Z 11-04-2018 03:00 AM

Well, if you aren't losing pressure in the fuel line, then that kind of rules out a leak in the fuel system somewhere. A leak would act just like a bad check valve, so you would lose pressure and starting the car would be harder until the fuel pump built fuel pressure back up.

Gasoline evaporates pretty quickly, so you might not necessarily see a wet area from a subtle leak. When I brought the C5Z back home from Aaron Scott's shop, one of the fuel injectors was leaking because of a damaged o-ring seal. That was bad enough that I could see fuel pooling around the injector, but if it set for a while, the fuel would quickly evaporate just leaving the odor behind. But there were other problems that made it difficult to pinpoint where the odor was actually coming from. Gasoline was migrating through the rubber hoses that had been put in the fuel system by Harwood. And the fuel vapor system had been completely disconnected entirely but the plumbing was all still intact.

Yeah, there was a pretty bad gasoline smell in the garage for quite a while, but I was able to get it all straightened out eventually.

BTW, if you have any suspicions about an actual fuel leak, you can put a dye additive in the fuel tank that will show up under UV light and will readily point out any leak you may have there. Even one that has long evaporated, leaving the dye as a residue. The dye stands out like a sore thumb. Actually gasoline itself will show up mildly under UV light too. That is how I saw the gasoline seeping through all the stainless clad rubber hosing in my kluged fuel system. Once I replaced it all with teflon lined hoses, it fixed that problem.

Personally, I would try to find and fix the problem as quickly as possible. Made me REAL nervous to think I was driving a potential torch when I could smell gasoline coming from somewhere.


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