I had the thermostat changed along with the radiator cap. The next test is to see if the engine's compression/combustion gases are escaping thru' the radiator. 3 Answers 2005 honda civic radiator fills the overflow I recently had the timing belt and waterpump changed and then i noticed the coolant got a little hot about 3 months later. And so another test or tests are needed to either confirm a blown head gasket or exonerate the head gasket as blown. Here's the reason why: In about 90% of the times, a blown head gasket will cause the engine's coolant to mix with the oil, but not always. So far so good, but more testing is necessary to make sure the head gasket is not blown (especially if your Honda is overheating or not starting), go to: TEST 2: Coolant Shooting Out From Open Radiator. As both of these mix, the result is an engine oil that is an off-white/tan color.ĬASE 2: The color of the engine oil is normal. This led to the head gasket to burn.Ģ.) Once the head gasket burns and the head warps, the head gasket is unable to keep engine oil, coolant, and compression/ exhaust gases from mixing.ģ.) This leads to the coolant entering the engine oil pan. If you're wondering why the oil looks like this? Well this is what happened:ġ.) Your Honda overheated to the point that the cylinder head warped (since it's made out of aluminum). This result confirms that your Honda's head gasket is blown. OK, I'll stop talking and we'll get this show on the road, this is what you need to do:Ģ.) The engine oil will be its usual normal color.Īlright, let's interpret the color of the engine oil:ĬASE 1: The color of the oil is a light tan, like coffee with too much creamer. This can be confirmed by simply pulling out the dipstick and checking the color of the oil and that's what we'll do in this first test. The most common end result of a blown head gasket is coolant leaking into the crank case where it mixes with the engine oil.Īs your Honda Civic's engine is cranked (or as it runs), the oil thoroughly mixes with the coolant and becomes milky white in color. TEST 1: Engine Oil The Color Of ‘Coffee With Too Much Creamer’ The engine oil is thick and a tan to an off-white color.Fuel is reaching and being injected into the cylinders.There's spark coming from all 4 ignition coils.White smoke is coming out of the tail-pipe and it smells like anti-freeze being cooked.Water pump is OK (not leaking coolant).Radiator is not busted (leaking coolant).Both the radiator fan and condenser fan are working.Here are a few other common symptoms a blown head gasket: If your Honda still starts and runs, the most common symptoms of a blown head gasket is that the engine overheats rapidly.
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