In another twist involving the public protector’s office‚ the Minister of Co-operative Governance an.
I HAVE a problem with a VW Golf 3. I have overhauled the engine, done all the procedures required - top skimmed, new valves, valve guides, rings and bearings fitted - but the car doesn't idle when the choke flap is wide open.
At half choke it idles to a high speed which is not acceptable. It seems as if it goes from under-choking to over-choking with no happy medium. What is the remedy for this? It is a carburettor engine on a Golf 1600 GS.
Often this kind of problem has a relatively simple solution. It seems likely that at low engine speed the air-fuel mixture entering the cylinders is too lean, that is, there is too much air and too little fuel in the mixture. It can be the result of excess air being sucked into the inlet tracts in the cylinder head, possibly past the gasket at the base of the carburettor, or past the manifold gasket fitted between the inlet manifold and the cylinder head. To check for air leaks at these places you can spray some thin oil on suspect joints while the engine is running. Ask somebody to watch for the sudden appearance of smoke from the exhaust pipe, which would indicate that oil has been sucked into the combustion chambers. If you find an air leak, replace the leaking gasket, ensuring that the surfaces clamping the gasket are smooth, clean and flat - a slightly warped surface is often the cause of a gasket not sealing properly.