Hey guys,,
I recently got myself a 1990 Escort 2door estate 1.3 popular 4 speed with 42k on the clock.

It starts and drives but idles very roughly,sometimes to the extent where it just cuts out,,,looking at the state of the plugs and leads there is no doubt that it needs a good service but what I need to know is what is the difference between the HSC and CVH(visually) and could somebody help me with a guide to stripping the carburetor and cleaning it.

thanks in advance for your help guys.