2. Visually inspect engine mating surfaces, gaskets, and seals for signs of water or oil leaks. Pay special attention to the areas near the mating surfaces of the cylinder head cover, cylinder head, oil filter and engine pan. Keep in mind that certain very minor leaks in these areas over time are inevitable and you are looking for signs of a major leak. If found, replace the defective gasket or oil seal by referring to the appropriate chapters in this manual.
3. Also check up reliability of an inhaling and a condition of all pipelines and hoses of the engine. Check the correct installation and condition of all clamps or clips. Broken or missing clamps can cause chafing of hoses, lines, or electrical wiring, leading to more serious problems down the road.
4. Carefully check the radiator and heater hoses along their entire length. Replace any cracked, swollen or otherwise damaged hoses. Cracks show up better when the hose is compressed. Pay special attention to the hose clamps to the elements of the cooling system. These clamps can pinch and puncture hoses, leading to leaks. If genuine Peugeot/Citroen crimp-type clamps are used to fasten the hoses, it is recommended to replace them with worm-type clamps (with screw).
5. Inspect all elements of the cooling system for leaks (hoses, mating surfaces, etc.).
Tip: A leak in the cooling system usually shows up as white or rusty deposits in the area near the leak.
6. If there is any defect, replace the element or gasket as directed in chapter 3.
7. With the vehicle raised, inspect the fuel tank and filler neck for pinholes, cracks, or other damage. The connection between the filler neck and the tank is especially important. Sometimes the rubber section of the filler neck or the connecting hose leaks due to the loosening of the fixing clamps or the aging of the rubber.
8. Carefully check all rubber hoses and metal fuel lines coming from the fuel tank. Check for loose connections, deterioration of hoses, pinched lines, and other defects. Pay special attention to vent pipes and hoses, which often run near the filler neck and can be clogged or kinked. Carefully inspect the lines going to the front of the car along the entire length. Replace damaged areas if necessary.
9. In the engine compartment, check the fastening of all fuel lines and vacuum lines and the fitting connections of pipelines and inspect all hoses: there are no twisting, chafing and other defects.
10. Check the condition of the pipelines and hoses of the power steering (if applicable).
11. Finally install the engine cover (if applicable).