I have a 2004 Oldsmobile Silohette Van

PLAYMAKER52

MEMBER
2004 OLDSMOBILE SILHOUETTE
190 MILES

I have a 2004 Oldsmobile Silohette Van. There is a odor of gas when I run the defrost. I initially replaced the gas cap which was bad, but the odor still remains. Please advise.

Thanks in advance!

Sunday, January 6th, 2013 AT 5:08 PM

3 Replies

JDL

MECHANIC
16,098 POSTS

Can you smell gas under the hood? Did you visually inspect for a gas leak? Also, check the evap system, for leaks.

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Sunday, January 6th, 2013 AT 6:01 PM

PLAYMAKER52

MEMBER
2 POSTS

When I initially troubleshot the problem, I did not smell or detect any leaks under the hood. It only is apparent when the blower is on. Where should I look. Around the fuel injectors? Do you think fuel injector cleaning could help?

As far as the evap system, are you talking about the exhaust?

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Monday, January 7th, 2013 AT 5:20 PM

JDL

MECHANIC
16,098 POSTS

The evap system routes fumes from the gas tank to engine compartment. Then the fumes are mixed in with the fuel system. Are there any applicable trouble codes? Some of the national brand autostores will check codes for free.

Check the fuel lines, under the vehicle, under the hood. Check fuel rail. Pull the vacuum line off the pressure regulator, any gas in the line? Smell of crankcase oil dipstick, does it smell like gas?

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Monday, January 7th, 2013 AT 6:01 PM