no automatic choke

Hi there we just bought a h reg mk1 golf convertable gti but the choke does'nt seem to cut in when we start it. Has any body got any ideas that would sort this or is this the joy of owning a great little car.  Thanks

Most people just convert to manual choke for about ?20.  There is even a place for the choke in the dash onthe left of the steering wheel.

Manual choke on a GTI Rich?

You sure

Peter.

Doh  ops: - the whole choke thing threw me!

Here is a more useful answer….

The GTI doesn't have a choke as such.  

To richen the mixture at cold start there is a 5th injector called the cold start injector (CSI).

This is controlled by the Thermo time switch that allows the CSI to operate for about 8secs on cold start.

The other item that comes into play once started is the Aux Air Valve (AAV).  This allows extra air past the throttle to keep the revs up until warm.

Voltages can be checked to see if the CSI control is working correctly and by removing the CSI to see if it is firing in cold start.  There is a rubber pipe from the AAV.  Once started this can be squeezed with pliers - if the revs drop - ok.  When warm do again if revs stay the same - ok.

Nice recovery!

Also the Warm Up regulator allows extra fuel into the engine.

There is so much discussion on this already

Search the forum under Aux air valve, warm up reg (WUR), fuel pressure regulator, control pressure.

You should find your answer!

Peter.

thank you for your help.