Checking the vacuum hose
1. Remove the vacuum hose.
2. Make sure that air passes freely through the vacuum hose from the side of the brake booster to the side of the vacuum pump and does not pass in the opposite direction.
3. If any problems are found with the internal check valve, replace it with a new one along with the vacuum hose.
Removal and installation of a vacuum hose
1. Remove the decorative engine cover.
2. Using pliers, open the clamp and disconnect the vacuum hose.
3. Versions with petrol engines: use pliers to open the clamp and disconnect the vacuum hose.
4. Versions with a diesel engine: disconnect the vacuum hose from the clamp, then use the pliers to open the clamp and disconnect the vacuum hose.
5. Remove the vacuum hose.
6. Installation is made in an order, the return to removal.