Idles too fast

Tiny
DPW21562
  • MEMBER
  • 1976 VOLKSWAGEN BEETLE
  • 64,000 MILES
How do you set the idle on a 1976 FI VW? Points and timing has been set to factory specs. The motore idles fast on starting and never drops down. Runs fine but just simpally idles too fast. Is there an idle adjustment on the fuel injection?
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Friday, May 17th, 2013 AT 6:55 PM

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Tiny
EXOVCDS
  • MEMBER
There's a speed screw at the base of the throttle bore, close to the cold start valve.

Make sure the gas cable is not adjusted too tight and that the throttle position is correct.

There's also a deceleration valve that can stick, causing high idle. Disconnect the vacuum line at the valve to see if the idle drops.
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Sunday, May 19th, 2013 AT 11:55 AM
Tiny
DOCFIXIT
  • EXPERT
To add check that auxillary air valve is closed when engine at temp pull hoses and use mirror to see plate
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Monday, May 20th, 2013 AT 10:40 AM

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