Coolant Leaking and Engine Overheating on Honda Civic

The Honda Civic Si from 1990-1995 commonly has radiator leaks after many years of normal operation. The leak starts small, but may cause:

• Coolant puddling under vehicle
• Engine overheating
• Unexplained coolant loss (only at first)
• Vehicle in “limp mode”; loss of power
• Cylinder head or head gasket failure

The coolant leaking can have a severe effect on your vehicle if left in disrepair. If the radiator is diagnosed as the leaky part, it will need to be replaced, or resealed if that is an option.

Note: coolant is toxic to animals, but tastes sweet. Any coolant spills should be cleaned to protect animals and children.