Your Fuel Tank Sucks and It's Costing You Performance
Posted by Mark on 3/12/2025 to
News
This blog highlights the often-overlooked impact of fuel tank venting on carburetor performance and engine tuning. Using real-world examples, including a go-kart engine troubleshooting story, it explains how improper venting can cause rich or lean running conditions, off-idle hesitation, and erratic behavior. The post breaks down how fuel tank pressure and vacuum affect fuel flow, why stock and aftermarket tanks often fail to vent properly, and offers practical advice on diagnosing and fixing venting issues to improve small engine performance.
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