103 4 DLT ENGINE The inlet manifold also has a precisely machined hole through which the exhaust gases are fed into the engine. The manifold has a provision to mount the EGR valve onto it so as to match the hole in the valve to the hole on the inlet manifold. Note : Ensure exhaust system and catalytic converter (if fitted) are not blocked and are free from obstruction. l Blockages in the exhaust can create back pressure low top speed, poor pick up, black smoke, carbon build up and low mileage. EGR valve and EGR tube to be assembled as per following instructions : 1. Handtighten EGR tube flange to Exhaust Manifold with respective fasteners. 2. Locate EGR tube and clamp on EGR valve. 3. Assemble EGR valve on Inlet Manifold and tighten it with respective fasteners. Vacuum Hose from Solenoid Valve EGR Valve EGR Tube Inlet Manifold Exhaust Manifold Check and ensure EGR Valve & Control System is Clean and functioning properly. l Check correct setting of potentiometer on FIP l Excessive carbon buildup / sticky valve. l Damaged Vacuum lines. All these can keep the ‘EGR’ open when not desired and vice versa. Either way these can seriously affect power output of the engine and also the emission levels. 4. Tighten clamp connecting EGR valve and tube. 5. Tighten EGR tube flange to Exhaust Manifold with respective fasteners. 6. Removal of EGR valve & EGR tube. 7. Follow the reverse sequence of assembly. Fig. 192 Schematic diagram of EGR circuit on Safari Euro - III Engine Clamp
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