Hi,
1967420G as of yesterday has very high idle......rev counter not active so can't be precise. However, higher and loader than when it normally starts with the choke. Reduces when I shift into gear but returns to high when in P or N.

Any thoughts??

Thanks

B

 

Have you done anything in the engine bay recently ? First off I would check the throttle cable is returning to the idle position fully.

 

Hi Frazer

No I have not. I will do so tomorrow and see if that corrects the issue

Thanks

 

All linkage is free and working

 

Try disconnecting the cold start carburettor. I am assuming this high-revs idle continues even when the engine is warm ?

 

Hi

By disconnecting , how, what do you mean? .... Just want to avoid messing with wrong aspect + how to test etc

THx

 

As your car is a US version, can you say what carburettors you have. I would expect there to be an automatic enrichment device, but US cars may be different. A photo might help.

 

Hi

Please see attached

 

If you look between the top and middle carbs you'll see the AED device with its aluminium-coloured strap with a lttle securing screw at the top. That device is switched electrically. You might care to consider removing the whole of the induction side and to dismantle the carbs and rebuild with a rebuild kit.

The Worlds Sole Manufacturer of Genuine SU Parts - SU Carburetters

You might care to have a read of this as well

https://forums.jag-lovers.com/t/salo...-choke/35482/4

 

Vacuum Leak. Check manifold gaskets, especially to carb bodies.