Unique Cars - - WORKSHOP BASICS -

PETROL IN­JEC­TION Make sure the fuel pump runs for a few sec­onds af­ter the ig­ni­tion is turned on. Crank and check for a spark at the plugs. Check all in­jec­tor plugs are firmly con­nected and rust-free. Check wiring.

DI­AG­NOS­TIC SYS­TEMS If the car has an OBD di­ag­nos­tic sys­tem, find out what it thinks is wrong. Bear in mind that a ‘faulty sender’, or sim­i­lar, is far more likely to be a faulty con­nec­tion af­ter a pe­riod of stand­ing idle.

DIESEL WOES Glow plugs should be warm to the touch af­ter oper­at­ing. Check the cir­cuit/re­lay if they all stay cold. In­jec­tion can be foxed by a blocked fil­ter, cold and waxy diesel, or gums and resins from cook­ing oil.

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