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Nissan E13 Engine Service Manual 〈2024〉

Always use a new angle gauge. "Tight + X degrees" is mandatory—torque wrenches alone are insufficient for head bolts.

| Symptom | Possible Cause | Remedy | |-----------------------------|------------------------------------|-------------------------------------| | Rough idle / misfire | Ignition coil failure | Replace coil & plug | | Oil consumption | PCV valve clogged / worn rings | Replace PCV, perform compression test | | Overheating | Thermostat stuck closed | Replace thermostat & coolant | | P0300 random misfire | Injector clog / vacuum leak | Clean injectors, smoke test intake |

Always use a new angle gauge. "Tight + X degrees" is mandatory—torque wrenches alone are insufficient for head bolts.

| Symptom | Possible Cause | Remedy | |-----------------------------|------------------------------------|-------------------------------------| | Rough idle / misfire | Ignition coil failure | Replace coil & plug | | Oil consumption | PCV valve clogged / worn rings | Replace PCV, perform compression test | | Overheating | Thermostat stuck closed | Replace thermostat & coolant | | P0300 random misfire | Injector clog / vacuum leak | Clean injectors, smoke test intake |