Why does my silverado smoke when I start it?

Why does my silverado smoke when I start it?

Considering that the vent holes are blocked by buildup, the oil does not drain back into the cylinder head. So when you first start the engine, a large amount of the accumulated oil is sucked into the intake system through the vacuum hose. This of course, results in a small cloud of smoke.

Why is my Silverado blowing white?

White exhaust smoke often happens when an engine burns coolant that has leaked into the combustion chamber. The following are the most common culprits: Blown head gasket: This is not so great news, but your engine’s structural integrity has most likely not been compromised, so it’s not ruinous.

Why does truck smoke after idle?

The reason it’s doing it after sitting a bit is at idle the throttle plate is closed and you have the highest amount of vacuum pulling the oil past the seals. Sooo high vac and enough time to pull that oil down the valve stem past those stem seals and you get your smoke.

Why do Chevys burn oil?

Oil consumption, which most consumers define as an engine that uses more than one quart of oil every 3,000 to 5,000 miles. Engine problems due to fouled or damaged valves, which can be caused by the excessive oil consumption issue.

What causes engine to smoke on startup?

Usually it’s due to worn piston rings or wear on the cylinders themselves. The valves sit right on top of the cylinders and when the seals are worn out, oil leaks into the combustion chambers and burns together with the fuel. Sometimes after a car has been parked for a while, blue smoke is noticeable on start up.

What causes smoke on startup?

If you notice white smoke from the exhaust on startup, this means that your car engine is taking on too much fluid from the vacuum pipe or the hose, meaning that your car will be burning excess oil and causing a burnt smell that is noticeable to the drivers and passengers.

What does white smoke on startup mean?

Why is my car blowing smoke after an oil change?

When your car burning oil and white smoke is emitted from the exhaust this can indicate that the coolant is traveling into the engine’s combustion chamber or the exhaust port. This typically happens when coolant is leaking into the head gasket. However, it could also be something as simple as needing an oil change.

What causes white smoke from exhaust when idle?

White smoke from the exhaust: This could be steam caused by condensation in the exhaust pipe or a more serious issue caused by an engine coolant leak. Excessive amounts of white smoke could indicate head gasket failure.

When did GM FIX 5.3 oil consumption?

2014
As we pointed out before, GM redesigned its 5.3-liter V8 engine after the 2014 model year, using different piston rings and adding a shield to deflect oil away from the piston skirts. The newer versions of the engine also feature a true oil level sensor and new valve covers.