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Idling compensation Volvo 240 (B17/19/21/23A)

An uneven or high idle and poor cold starting can point to a vacuum leak in the idle compensation – on older 240s with a carburetor engine the rubber hoses harden and crack over the years, and a cracked manifold lets false air in. This category gathers the parts that keep the system sealed on four-cylinder 240s.

The group includes hoses in several dimensions, a T-nipple for the manifold, and a protecting casing. Since the fit follows the engine version (B17/B19/B21/B23A), hose routing and connections are a typical inspection point during a rebuild – compare the old hose against the new one before removal. A simple fix that often calms the idle is to replace dry hoses and check that the nipples are seated tightly.

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