volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

carburettor adjustment data > < Top part of carburettor
34 PICT, Keihin carburettor and ignition system
Servicing 34 PICT carburettor
Bottom part of carburettor
 
V22-1687
  • Idle adjusting screw
    • ◆ Checking and adjusting idle speed: idle speed adjustment =>page 22-22
    • ◆ Check O-ring for damage
  • Float chamber
    • ◆ Additional venting for vehicles with automatic gearbox: Checking float chamberventing=>page 22-31
  • Float
  • Air correction jet with emulsion tube
  • Injection tube
    • ◆ Checking an adjusting quantity injected by accelerator pump
      =>page 22-30
    • ◆ Fuel jet must strike collar on discharge arm; bend with normal tools if necessary
 
V22-1687
  • Pilot jet
    • ◆ 2-stage pilot jet for vehicles with automatic gearbox: cold idle valve
      =>page 22-33
  • Adjusting nut
    • ◆ Checking and adjusting quantity injected by accelerator pump
      =>page 22-30
  • Part-throttle channel heating
    • ◆ 08.77 ▸
    • ◆ Contact surface of heater element must be against carburator (earth connection)
    • ◆ Checking: pull connection apart, connect diode test lamp V.A.G 1527 between plug and battery positive.
      LED must light.
  • Screw plug
    • ◆ For auxiliary fuel jet
  • Auxiliary fuel jet
 
V22-1687
  • Adjusting screw
    • ◆ Checking and adjusting cold idle speed =>page 22-26
  • Limit screw
    • ◆ Basic setting of throttle valve
      =>page 22-28
  • CO adjusting screw
    • ◆ Adjusting CO content: idle adjustment =>page 22-22
    • ◆ Check O-ring for damage
  • Main jet
  • Bypass cut-off valve
    • ◆ Should click when ignition is switched on
    • ◆ When valve is removed, the plunger must first be pushed in
      about 3...4 mm
  • Screw plug

carburettor adjustment data > < Top part of carburettor