![]() ![]() Can A Spark Plug Cause A Misfire And Misfire Trouble Code?.Which Spark Plugs Should I Buy: AC Delco or Brand X?.The next test is to see if the engine's compression/combustion gases are escaping thru' the radiator. Thankfully, there are several more tests that you can do to make sure that the head gasket is really blown or not. Here's why: Normally (about 90% of the time) when a head gasket gets blown on a 4.3L, 5.0L, 5.7L GM van (or mini-van, pick up, SUV), coolant will enter into the crankcase and mix with the engine oil. Go to: TEST 2: Are Engine Compression -Exhaust Gases Coming Out Of The Radiator? I suggest doing the two other tests I'm presenting in this article. Although this is a good result, you're not out of the woods yet. This warpage causes the head gasket (or gaskets) to burn.Ģ.) A blown head gasket loses its sealing power/ability and if it's not sealing the oil and coolant ports in both the engine block and the cylinder head, this will lead to the coolant entering the engine oil pan.ģ.) As both oil and coolant mix, the resulting combination gets thick and becomes an off-white color.ĬASE 2: The color of the engine oil is normal. Why does the oil look like this? Mainly because your 4.3L, 5.0L, 5.7L GM van (or mini-van, pick up, SUV) over-heated and:ġ.) The cylinder head (or heads) warped. The solution to this problem is replacing both head gaskets. This is not good news and positively confirms that the head gasket on your 4.3L, 5.0L, 5.7L GM van (or mini-van, pick up, SUV) is blown. Now, let's find out what each of the two results mean:ĬASE 1: The color of the oil is a light tan, like coffee with too much creamer. What you're doing is confirming one of two things:ġ.) Either the oil, sticking to the dipstick, is a creamy tan color and is thick as syrup.Ģ.) The oil is its normal color and viscosity. ![]() Now, check what the color of the oil is and how thick it is. OK, I'll stop talking and we'll get this show on the road, this is what you need to do: If, for example, the first test proves to you that the head gasket is blown, there's no need to proceed to the 2nd or 3rd test (unless for the sake of knowledge itself). The first two can be done under 5 minutes and in the majority of the cases, you probably won't have to do all three tests. TEST 1: Is The Engine Oil The Color Of ‘Coffee With Too Much Creamer’?īefore you start, I suggest you take a quick glance at all three tests. The engine oil is thick and tan to off-white color (mixed with coolant).You know it's not a lack of fuel, because you have verified that the fuel pump is delivering fuel to the fuel injectors.You have already verified it's not an ignition system problem because you have spark coming out at all of the spark plug wires.Your 4.3L, 5.0L, 5.7L GM van (or mini-van, pick up, SUV) won't start.White smoke is coming out of the tail-pipe and it smells like anti-freeze being cooked.You know it's not the fan (or fan clutch) or thermostat. Your 4.3L, 5.0L, 5.7L GM van (or mini-van, pick up, SUV) is overheating.The most common symptoms a blown head gasket are: 3) Thermostat went bad and is stuck closed and the coolant could not circulate. The most common cause of a blown head gasket is that the engine overheated because: 1) Fan clutch is not working, 2) All of the coolant leaked out of the engine and you kept driving it this way. You can find this tutorial in Spanish here: Cómo Probar Los Empaques De Las Cabezas (GM 4.3L, 5.0L, 5.7L) (at: ). TEST 3: Checking For a Blown Head Gasket with an Engine Compression Test.TEST 2: Are Engine Compression -Exhaust Gases Coming Out Of The Radiator?.TEST 1: Is The Engine Oil The Color of ‘Coffee With Too Much Creamer’?. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |