volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Throttle-mechanism > < Engine code: JH 8/86 >
4 Cyl injection engine (2 valve), Mechanics
Servicing activated charcoal filter unit
Engine code: 2H
 
U20-0035

Note:

The arrows -A- and -B- show the flow of fuel tank ventilation system for the following conditions:

Engine off

Arrows A

Engine idling

Arrows A

Increased rpm

Arrows A, B

  • Intake manifold
  • Throttle valve housing
  • Control pipe
    • ◆ Lilac
 
U20-0035
  • From expansion tank
  • Activated charcoal filter
    • ◆ Location: behind left front wheel housing cover
  • Cut-off valve
    • ◆ Location: behind left front wheel housing cover
    • ◆ Checking , fig.1
  • Vacuum pipe
    • ◆ White
  • To temperature regulator
    • ◆ For intake air preheating
  • Full load switch
 
V20-0561

→ Fig.1     Checking cut-off valve for activated charcoal filter

  • ‒ Fit vacuum pump onto small connection.
  • ‒ Blow into large opening -arrow-.
    • ‒ No flow - valve closed
  • ‒ Operate vacuum pump.
    • ‒ Flow - valve closed

Otherside renew vale.

Throttle-mechanism > < Engine code: JH 8/86 >