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Fuel tank vacuum
Hi, I recently acquired an 86 Chevy K20. It had a crate engine installed by prior owner. Most emissions equipment is gone. Running fine, ( although I thought MPG would be a little better ) but when I open gas cap there is a big whoosh of vacuum. Is this right? Do I need a new gas cap?- longbeach
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- Replies: 4
- Forum: Carb Fuel Systems
