Hilborn Technical Support - Electronic - Fuel Injector Manifolds
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Poor sound quality at idle

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Poor sound quality at idle can be defined as the engine not hitting each cylinder the same. Popping through a ram tube can also accompany this concern. Adjustment of the injector manifold is required. Follow the technique described in "Injector Manifold Adjustments". If a copy of these adjustments or assistance is required please contact us.