It sounds like, perhaps, oil is leaking out of the value cover gasket and is vaporizing on the hot engine and manifold. I think if it's an older vehicle, and if you replace the valve cover gasket, you'll cure the problem.
i just put in a new radiator and now temperature gauge reads high but their are no leaks
An inoperative temperature gauge will not alter how an engine runs, but the operator will not know if the water temperature has risen above normal without a properly working guage.
In a 2012 Ford Explorer, the temperature gauge is located on the instrument cluster, typically to the right of the speedometer. It displays the engine coolant temperature, helping the driver monitor whether the engine is operating within a normal temperature range. If the gauge indicates overheating, it's important to check the engine to prevent damage.
The normal engine temperature for a semi-truck typically ranges from 180°F to 200°F. It may vary slightly depending on the specific make and model of the truck. Monitoring the temperature gauge regularly is important to ensure the engine is operating within a safe range.
To check the engine temperature in a Citroën Saxo, you can monitor the temperature gauge on the dashboard, which typically indicates the coolant temperature. If the gauge is in the normal range (usually around the middle of the scale), your engine is operating at a safe temperature. Additionally, you can use an OBD-II scanner to read the engine temperature directly from the ECU if you're looking for more precise data. If you notice the gauge approaching the red zone, it’s important to stop the vehicle and check for overheating issues.
You run it until the engine reaches normal operating temperature on the temperature gauge this way the oils viscosity will be correct. on colder days you need to run it longer.
engine coolant
A normal temperature reading for a vehicle would be between 180-192 degrees F. Temps of 200 and higher can damage an engine.
The 1999 Cadillac normal coolant temperature gauge reading should be 180 degrees. A 195 degrees thermostat could be used, causing the temperature gauge to read 195.
Your engine coolant temperature gauge has a sensor ( there is also a engine coolant temperature sensor that is used for the computer / PCM )
It will usually run with a gauge temperature of around 200-210 degrees.
A signal from the temperature sensor on the engine.