vmaxDIAGNOSTICS[1]Full Pre – M.O.T checks

The MOT test checks that your vehicle meets road safety and environmental standards.

You must get an MOT for your vehicle by either, the third anniversary of its registration or anniversary of its last MOT, if it’s over 3 years old.

Engine ECU diagnostics

Most vehicles today is equipped with an on-board computer known as an Engine Control Unit (ECU) which continually monitors the performance of the vehicle. Different sensors all around the vehicle report to the ECU if there are problems found the ECU generates an error code .e.g. low brake fluid level, increased engine temperature or low engine oil level.

Suspension & brakes safety check

Maintaining a healthy vehicle suspension system is vital if you are to gain the optimum comfort, stability and handling characteristics from your vehicle. Worn shock absorbers can increse your braking distance as tyres have less contact with the road surface.

Engine head gasket check aka. Combustion test

The head gasket is located at the top of the engine block under the head. Its purpose is to contain engine compression and to separate the three liquids in the engine from each other. The engine utilizes a spark from the spark plug to ignite a fuel/air mixture that explodes in the cylinder. The explosion moves a piston that turns the crankshaft. The crankshaft transfers that energy to the transmission and onwards to the wheels. The head gasket helps keep this explosive system contained.

Fuel system check aka. injectors leak test

Fuel System leak failures can be caused by a leaking fuel injector(s), a bad fuel pressure regulator, or a leaking fuel pump check valve. When this happens, the fuel rail voids and the car is difficult to start when it’s been sitting for a while. When the engine is turned over, if the fuel rail is voided, it takes the fuel pump a while to refill and clear the voids from the rail so that the car will get enough fuel to start.

Engine compression test aka. Engine cylinder pressure test

A compression test reveals the condition of your engine’s valves, its valve seats, and piston rings and whether these parts are wearing evenly. Healthy engines should have compression over specific psi per cylinder, with no more than 10 percent variation between the highest and lowest readings. The test can be used to diagnose problems in the engine or to measure and improve engine performance.

Oil pump test

The oil pump supplies oil to lubricate your engine. If the oil pump is worn or is not turning, the engine will suffer a loss of oil pressure, which may result in engine damage or engine failure. The first sign of trouble may be a low oil pressure warning light, a drop in the normal reading on you oil pressure gauge (if your car has one), or the appearance of ticking or clattering sounds from your engine.