Radiator & cooling system

Overheating and the cooling system

Overheating and leak fixes built for Riyadh summers.

Circuit pressure tested
Leaks located
Temperature watched after repair

Overheating and the cooling system — **BEC**Precise diagnosis. Clear work.

What we check in the cooling circuit

A cooling system in Riyadh runs near its upper limit for most of the year. Overheating is not a fault in itself but the result of a break somewhere in the chain: radiator, thermostat, pump, fan, pressure cap or expansion tank. Ignoring it for one hour can cost a cylinder head.

Temperature signs not to ignore

In Riyadh heat, overheating can damage an engine in minutes, so we treat it as urgent.

Rising temperature gauge
Coolant level dropping
Steam or smell from the bonnet
Weak A/C alongside heat

What we check in the cooling circuit

01

How we locate the cause of overheating

We pressure-test the circuit for external and internal leaks, watch thermostat opening and radiator inlet/outlet temperatures, and verify fan operation across its speeds through the tester. We also test for exhaust gases in the coolant — a head gasket sign — and check radiator fin cleanliness, since dust alone measurably reduces cooling.

02

Coolant is not coloured water

Each marque specifies a coolant with a particular corrosion-inhibitor package, and mixing types creates deposits that block the fine passages in the radiator and oil cooler. Using plain water in Riyadh is a common mistake: it lowers boiling protection and accelerates corrosion. We drain, flush where needed, refill with the approved type at the correct ratio, then vacuum-fill to purge air, because a single air pocket causes intermittent overheating.

03

Prevention before the summer season

The best time to check cooling is before summer, not during it. We inspect hoses for hardening and swelling, the pressure cap that quietly loses its rating, the expansion tank that cracks with heat, and the water pump for play or early weeping. These are short checks that prevent a breakdown on an open road on a 40-degree day.