Breakdown (sort of) on way to France

Type 4 2ltr
Progressive Carb

Ran fine from Oxford to Folstone services.

Tried starting again after coming out of services and it won't idle, just keeps dropping out. I've driven it from there to Dover but keeps dropping out at junctions. Any ideas?

 

Idle jet blockage? Have any of the pipes come loose? Vac pipe for the Servo?

 

No vac.

What's the best way to check the jet?

 

It over revs to begin with then cuts out.

 

Do you not have a vacuum take off for the servo from the manifold? It does sound fuel related and both jet blockage and air leaks can cause this. I think the idle jets live on the sides of the carb. Two brass slotted screws. The jets live in those. Have you got access to youtube?

 

Nice one. I'll check this at first light.

 

Makes a change from the usual Broken down IN France threads!!!

 

France is the Bermuda triangle of the vw bus
,

 

My carb is slightly different from the one in this video. I have this carb

http://www.justkampers.com/weber-si...1-1979-vw-t25-2000cc-aircooled-1979-1983.html

Where do I find the idle jet. Do I need to back the mixture screw right out?

 

Found it!!!!!! Air leak. Back on the road again.

 

fantastic

 

Cheers for the help people.

 

Excellent , but air leak where? , might help someone in future to know!

 

He's told you, at the services on the way to Dover.

 

one of the elbows is the usual suspect...

 

That will teach him driving with arm out of the window