DME 7.8 DME 7.80 · Work instruction Display OK

DME 7.8 DME 7.80 Work instruction Display OK If not OK 3 Check fuel pressure regu- ♦Remove vacuum hose from fuel 0.4 - 0.6 bar Check the intake air lator, vacuum connection pressure regulator system for leaks and fuel return line ♦Connect special tool 9103/2 to and check vacuum line to fuel pressure vacuum hose regulator for restric- ♦Start the engine. tions. ♦ ♦Check housing of fuel pressure Replace the fuel regulator for damage and defor- pressure regulator if mation it is damaged with the result that the spring pre-tension- ing is increased 4 Check EVAP canister ♦Disconnect hose from EVAP can- The vacuum must purge valve ister purge valve to intake sys- not fall below 0.5 tem at EVAP canister purge bar after 10 minutes valve ♦Remove connector of EVAP can- ister purge valve ♦Connect special tool 9160/1 to EVAP canister purge valve ♦Generate vacuum of approx. 0.7 bar 5 Check fuel injectors for leaks 0-36.5 page 2 2469 P0175 p0175 Printed in Germany – 6, 2002