Why do AFM engines burn oil?
Why do AFM engines burn oil?
The system uses an oil pressure relief valve that sprays oil directly onto the piston skirts, but this oil spray can allegedly overload the piston rings, leaking past the rings and burning off, or accumulating on the surface of the combustion chamber and causing carbon buildup.
Is Chevy discontinuing the 5.3 engine?
Also being discontinued for 2022 is the 5.3L EcoTec3 V8 gasoline engine with Dynamic Fuel Management (DFM), which is one of the technologies GM uses in order to improve fuel economy. This engine produces 310 horsepower and 348 lb.
Why does my Chevy Ecotec burn so much oil?
Design defects in GM’s 2.4L Ecotec engine allow excess oil to sneak into the combustion chamber. The oil is burned off, meaning owners need to top off their oil between changes or risk permanent engine damage. A special coverage adjustment has been offered for 2011-2012 Equinox owners.
Is the GM 5.3L V8 engine eating up too much oil?
Now, to be fair: Not every GM 5.3L V8 has problems with AFM. Many consumers report a trouble-free ownership experience. Still, AFM problems exist. The AFM excessive oil consumption problem usually crops up on vehicles that go on long highway drives.
How often should I add oil to my Chevy 8.1 Vortec?
Unlike newer Chevy’s with AFM, the oil consumption on the 8.1 vortec is really less troublesome or problematic. While this isn’t necessarily an “issue” I just wanted to point it out for any prospective owners out there. Most 8.1 owners report needing to add 1qt of oil in between oil changes, so somewhere between every 2,500 and 5,000 miles.
Are there any problems with the Chevy 8.1L Vortec?
The 8.1L was considered the diesel-alternative in the Chevy line and was designed to be big enough to produce comparable power and towing capabilities to that of the diesels. 1. Faulty Crankshaft Position Sensor – Vortec 8100 Out of all the problems on my list, this one is probably the most common and biggest pain.
What causes excessive oil consumption in a GMC Vortec?
A lawsuit has been filed on behalf of certain 2010-2013 GM owners with 5.3L V8 Vortec 5300 engines. According to the plaintiffs, changes to the engine design allow oil to enter the combustion chamber, leading to excessive oil consumption and premature engine failure.
Now, to be fair: Not every GM 5.3L V8 has problems with AFM. Many consumers report a trouble-free ownership experience. Still, AFM problems exist. The AFM excessive oil consumption problem usually crops up on vehicles that go on long highway drives.
Unlike newer Chevy’s with AFM, the oil consumption on the 8.1 vortec is really less troublesome or problematic. While this isn’t necessarily an “issue” I just wanted to point it out for any prospective owners out there. Most 8.1 owners report needing to add 1qt of oil in between oil changes, so somewhere between every 2,500 and 5,000 miles.
The 8.1L was considered the diesel-alternative in the Chevy line and was designed to be big enough to produce comparable power and towing capabilities to that of the diesels. 1. Faulty Crankshaft Position Sensor – Vortec 8100 Out of all the problems on my list, this one is probably the most common and biggest pain.
