Vauxhall Workshop Service and Repair Manuals

Intake Air Pre-heating, Check  

Notice: 

Checking conditions: engine cold (room temperature) and correct condition and seating of the vacuum hoses.  

  Remove, Disconnect   

Remove air cleaner housing upper part, air intake cover and pre-heating hose (1).     Inspect    Check vacuum unit (2) in air filter housing: start engine - valve to hot air duct (3) must remain open up to a temperature of approx. 35 ° C/95 ° F. With engine running, heat air filter housing near valve to approx. 40 ° C/104 ° F (industrial hot air dryer) - valve must now close the hot air duct.   Check expansion element regulator (4) in air intake cover: allow engine to run and heat expansion element regulator to approx. 40 ° C/104 ° F (industrial hot air dryer) - valve to hot air duct must close.

Notice: 

Before assembling components of the intake system (hoses, connections, etc.), they must be cleaned of any possible contamination (grease, oil, etc.). When tightening the hose clamps, be sure to observe exactly the tightening torque of 3.5 Nm / 2.6 lbf. ft.  

  Important!   

It is only ensured that the intake system is free of leaks, thus ensuring operational safety of the engine, if the hose clamps are tightened correctly to the prescribed tightening torque.  

  Install, Connect   

Install pre-heating hose, air intake cover and upper part of air filter housing.