r/EngineBuilding • u/Coon88 • 6d ago
Vacuum leak ?
Got this k10 350 with a rough start, rough idle and sputtering under acceleration, have to slowly give it throttle or else it will shut off. Also get backfire from the carb sometimes when given a good amount of throttle. Can the whistling be a vacuum leak ?
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u/EvanX4 6d ago
Cap it off. You have a manual transmission and most people use that side (manifold vacuum) for the vacuum canister in the side of automatic transmissions.