Cleaning

A blocked fuel-pump filter will cause the engine to cut out intermittently, particularly at high speeds, and it may stop altogether. Read more

Over a period of time, dirt inevitably gets through the fuel filter of a carburettor , and chemicals in petrol leave residues which can eventually clog parts of it. Read more

The Stromberg carburettor does not have a regular service schedule, but should be cleaned about once a year. Replace worn parts as necessary. Read more

The Varajet carburettor used on many Vauxhalls and Opels is a hybrid between fixed-jet and variable-jet (for example, SU) types. It is as sensitive to dirt and sediment as any fixed-jet carburettor, and needs careful cleaning about once a year. Read more

To remove the film of grime which forms on the bodywork use plenty of clean water. Do not wipe with a dry cloth — the dirt will scratch the paint. Read more

At regular service intervals clean and lubricate hinges on moving panels and foot-pedal pivot points. Check the accelerator cable for stiffness. Read more

Car interiors collect a lot of dust and grit, particularly on the carpet. Regular cleaning cuts down wear and discoloration, and gives the carpets and upholstery a longer life. Read more

On cars with dynamos, faults in the control box show up in various ways, some of which are described in Testing a dynamo and checking output . Read more

Mud and dirty water thrown up by the wheels is the principal cause of body rust on cars. If the underside is unsealed, keep underbody dirt to a minimum to reduce the chance of rust damage. Read more

The SU carburettor is simple to strip. It has only one jet (except in a few special types) and very few moving parts. It is very reliable, but it can become dirty and choked — and some parts wear out. Read more

The Ford Variable Venturi carburettor is fitted to many small Fords. Read more

Fixed-jet carburettors are easily blocked by small dirt particles and chemical residues from fuel , because some of the jets are very small. Dismantle and clean them about once a year. Read more

A choked filter in an air cleaner causes increased fuel consumption and, eventually, extra engine wear. Read more