| Exhaust gas recirculation system |
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| The engine control unit -J248- activates the exhaust gas recirculation system through theexhaust gas recirculation valve -N18- to the exhaust gas recirculation mechanical valve. |
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| The mechanical valve for exhaust gas recirculation with conical tappet allows different apertures for different valve positions. |
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| All positions of the valve can be reached thanks to the cycle activation. |
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| The exhaust gas recirculation begins after the engine has been running at idle for 2 minutes. |
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| Restart engine or briefly increase engine speed above 1,500 rpm when longer checks are necessary. Repeat the measurement. |
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| Secure all hose connections with the correct hose clips (same as original equipment) → Parts catalogue. |
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