Opel Vectra B

since 1995 release

Repair and operation of the car

Leaks in the cooling system usually are found on white or colors of a rust to a raid in the area adjoining leak.

Precisely it is difficult to define fuel leak until leak becomes essential and, therefore, easily visible. Fuel tends to evaporate quickly as soon as it contacts with air, especially in a hot motor compartment. Small drops can disappear before you are able to define the place of leak. If you suspect that leak of fuel in the field of a motor compartment takes place, then cool the engine and start it, it cold, at an open cowl so far. Metal objects tend to contract in a cold state, and rubber hoses tend to be weakened so any leaks will be more obvious while the engine heats up from start and a cold state.

If there are signs that there is a leak of any liquid, but you cannot distinguish type of liquid or an exact origin, then it is necessary to leave the car for long time and to put a big piece of paper or a rag under the car. It will help to find the place of course of liquid, and also will help to identify the followed liquid on color. But keep in mind that some leaks can be shown only at the working engine.

Leak in a vacuum hose means that air is sucked in in a hose (but does not leave a hose), and it does leak very difficult for detection. The method of detection consists in using an old vacuum hose as some kind of stethoscope. You keep one end of a hose close to an ear (but not in fish soup), and use other end to explore the area around alleged leak. When the end of a hose directly is over the place of leak, the hissing sound will be clearly heard through a hose. It is necessary to avoid contact with hot and moving details as the engine when checking has to work.