The term “LS engine” has been used for the third and fourth generations of the small-block V8s that were introduced in 1997 and are still in production. We recommend having a mechanic take a look at it.Chevrolet has been making small-block engines since 1954. If there is no oil pressure the engine will lock up and fail very fast. Low oil pressure can blow your engine quick.Īlways treat low oil pressure in your Express seriously.
#1996 chevy express 2500 burning oil how to#
Here’s a good article on how to check the oil pressure sensor from itstillruns.Īnything after the first two steps is best left to the professionals. One of the first things that people do when they have the low oil pressure light is to change out this sensor to see if that rectifies the problem. If your Express’s sensor has gone bad, it’ll shoot a false low pressure reading to the ECM. Modern vehicles use an electric oil pressure sending unit. You’ll need to start checking it much more often.Ĭheck to See if the Oil Pressure Sending Unit is working Keep in mind that if the oil has leaked out once, it will leak out again.
#1996 chevy express 2500 burning oil full#
If the oil level is really low, you’ll need to fill it up until it’s back to the full mark. Here are a few of the steps that you can pursue to diagnose your low oil pressure condition:Īs stated above, checking the oil level in your Express is definitely the place to start diagnosing low oil pressure. Low Oil Pressure Diagnosis: Chevy Express This valve can only allow so much oil through, and may trigger the oil light. This bypass valve is activated when there is too much resistance from the oil filter. Modern engines use a bypass valves to keep oil flowing to the engine even when the filter is clogged. This tube can fall out, which will cause no oil to get to the oil pump. There is a tube in your Express that takes the oil from the pan to the oil pump. If you have no idea when the last time your Express’s oil was changed, or if you happen to have done a lot of towing, or if your oil change is overdue, changing the oil itself may vary well solve the problem. Or, the oil itself could just be so dirty that it no longer cycles through the engine properly, which causes low oil pressure. Check the oil level and make sure it’s ok, and that it looks ok.Įngines that run long enough without any sort of regular oil change schedule can get so dirty on the inside that it begins to build up inside the crank case. This same problem can occur when there is too much oil as well. It’s the same liquid, but has totally different characteristics when foamy. Think about it like the foam on a cappuccino or beer. If the oil level is significantly lower in the pan than it should be, air can get into the oil pump and aerate the oil. Eventually though, enough debris can enter the pump to do some lasting damage to the pump capacity. There is a screen in most oil pumps that keeps large debris from entering. When it begins wearing out, its ability to pump oil will be diminished. The oil pump is responsible for taking the oil from the oil pan and pumping it through your Express’s engine. It’s not a matter of if it will lock up the engine, it’s only a matter of when.
Running without enough oil to keep pressure in the crank case will certainly look up the engine. Do not drive a vehicle with low engine oil to the store to buy more oil. If the engine oil level appears to be low (or empty), you’ll need to fill it up.
The first thing you should do, is check your engine oil level.
The number one reason that your Express would have low oil pressure would be a lack of oil. Below, we’ll review the most common causes: There are many things that can cause low oil pressure. We advise not running the engine until the issue can be properly diagnosed. When the oil pressure light on, it should be assumed that the engine locking up is imminent. Low oil pressure will cause the engine to seize up. One of the most serious issues that can happen to your Chevy Express‘s engine is if it ends up with low oil pressure.
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