Diagnostics of fuel and exhaust system faults (Renault Clio 1)

Excessive fuel consumption

• The air filter element is dirty or clogged (Section 1).
• The carburetor or fuel injection system is faulty - depending on the model (Section 4).
• Faulty injector - diesel models (Section 4).
• Incorrect ignition timing/damaged ignition system - petrol models (Sections 1 and 5).
• Low tire pressure ("Weekly checks").

Fuel leak and/or fuel smell

• The fuel tank, pipes or connections are damaged or corroded (Section 4).

This note was copied from the resource (Renaultbook.ru)

Excessive noise or smoky exhaust

• Leaking exhaust system or manifold connections (Sections 1 and 4).
• Leaking, corroded or damaged mufflers or exhaust pipe (Sections 1 and 4).
• The suspensions are broken, causing the exhaust system to touch the body or suspension (Section 1).