Hyundai repair and servicing in Sharjah

This is established in a fixed order, because guessing at it is expensive in both directions. We listen on a genuinely cold start — the car sits overnight and we start it, it is not started warm in the afternoon — and we listen low, at the sump line, not at the cam cover. Oil pressure is taken with a mechanical gauge at the galley rather than trusted to the warning lamp, which only knows about a pressure low enough to be an emergency. The oil itself is read for level, for a fuel smell and for the glitter that bearing material leaves behind. An oil analysis on its own does not settle this and we will not sell it as though it does. If everything points the same way the sump comes off and the shells are read directly, and you are told before that happens what it costs to look and what the two possible answers are.

The rear bank of a transverse V6 sits against the bulkhead, which is where these leaks start and where they are hardest to see, so the car goes up, the area is cleaned and the engine is run before anything is quoted. A stain under the front of the engine is very often oil that has travelled from somewhere else. Where there is a cam timing code alongside the leak we take the oil-control valve out and look at its filter screen instead of replacing the valve on the strength of the code, because a silted screen and a dead solenoid read identically to a scan tool and only one of them is a part you need to buy.

Direct injection sprays the fuel past the valve instead of over it, so nothing washes the back of the valve and the oil vapour coming from the crankcase bakes onto it. We read misfire counters cylinder by cylinder and fuel trims at idle and just off idle, check the crankcase ventilation circuit that is feeding the deposit in the first place, and look into the port with a borescope before anybody proposes cleaning it. The reason for that order is simple: a tired coil, a worn plug and a carboned valve all arrive as a rough idle, and only one of them justifies taking an inlet manifold off.

This is a steering noise and not a suspension noise, and it gets sold as ball joints more often than anything else on these cars. With the car in the air and the wheels hanging, the knock is still there when the wheel is rocked, which already rules out most of the front end. We put a hand on the coupler between the assist motor and the column while somebody rocks the wheel and feel the lost motion directly, and we read the steering module and its torque-sensor live data before deciding whether the noise and any complaint about heavy or uneven assistance are even the same fault.

A lock-up shudder is felt in the seat and blamed on the engine, so the first job is to prove where it lives: we watch engine speed against turbine and output speed in live data while the shudder is happening, and confirm it vanishes the instant lock-up is released. Then the fluid. It is checked to the car’s own procedure and at the temperature the car specifies, not on a cold dipstick in a car park, because the handbook wording that leads owners to believe this fluid never needs attention is the single most common reason these gearboxes shudder. We will say which of the two we think it is, and we will say plainly that a fluid service on a badly worn gearbox is not a repair.

We take vent temperature and both service-port pressures with the car standing, at an ambient we write down, because a system that is adequate at thirty degrees can be short of capacity at forty-five and the shortfall is only visible at the condition you actually drive in. The condenser is inspected for the pack of fine dust that builds up on its face, fan operation is commanded and watched rather than assumed, and the refrigerant the car takes is read from the label under the bonnet before anything is connected. Where the compressor is the answer we also establish why it died, since a compressor that failed on a blocked condenser will do it again.

Rear bushes are levered individually with the car in the air, arm by arm, because a rear axle that knocks has five or six candidates at each corner and replacing all of them is how a rear suspension ends up costing what a gearbox costs. When a bush is replaced the bolt is tightened with the suspension loaded at ride height rather than hanging, and the rear geometry is reset afterwards, because on this axle the rear toe and camber are what eat the inner edge of a tyre. Where the alignment is done somewhere we send you, we say so before you book rather than after.

A vibration that changes with gear selection and not with engine speed is a mount and not a misfire, and separating those two is the first thing that happens. The mounts are loaded with a bar while the engine is rocked, and the hydraulic mount is checked for the fluid weep that says its chamber has split. We also check that the mount bracket bolts were pulled up properly after any previous engine work, because a mount that was never torqued gives the same symptom as one that has failed and costs nothing to correct.