Chevy Corsica smells like gas fumes when driving with heater on. What is causing this?

1996 CHEVROLET CORSICA
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AROBBINS
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We were sent to a muffler shop to check if it was related to muffler problem. They said it was possibly a leaking fuel injector and not an exhaust problem.
Dec 2, 2011 at 5:37 PM
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RASMATAZ
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Could be running too rich and the gas vapor is going thru the firewall
Dec 2, 2011 at 5:58 PM
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