A rough idle in your Honda Acty can be frustrating, especially when the engine shakes, stalls, or surges unpredictably. The solution often depends on whether your Acty is carbureted (like the HA3/HA4 with the E05A engine) or fuel-injected (like the HA6/HA7 with the E07Z engine). On carbureted models, common causes include dirty or clogged idle jets