I have that problem with every vehicle I put in the garage that doesn't have an evaporator system. I have put a system on the vehicle if it has a vent tube on the carb. Sometimes I have to put a wet towel over the carb/s to soak up the fumes. My garage is under the house & the odor gets in the house.

They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.
1972 Chevy c10 Cheyenne Super
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