Can bad valve seals cause blue smoke?
Bad Valve Stem Seals Worn valve guides and valves will also cause this issue. There are valve seals to prevent this oil from flowing into the engine. If these seals are worn or broken, the oil will come down into the engine; then is burnt along with the air and fuel, causing blue smoke.
What causes engine to smoke on startup?
Smoke often leaves car engines as a result of overheating. This can be caused by faulty wire casings, heated residues on the engine block and overheated liquids including oil, transmission fluid and brake fluid. There may also be a fault in your coolant system, or your engine may not have enough lubricant.
What happens when you have a bad valve guide seal?
A bad valve guide seal will also have a tiny gap in it after it’s been in the cold for a while. This means that when you start a cold engine, that little bit of oil gets sucked through the seal gap into the combustion chamber. The result will be a cloud of blue-white smoke coming out of the tailpipe when you first start the car. 6) Low Power
Why do I get blue smoke when I start my Vortec?
It could be your valve seals that need attention, letting a small amount of oil trickle into the combustion chamber as its sits, and then burns up upon start up causing your blue smoke. If its just on start up it should just be a valve issue, some other members might have better insight than me, but it sounds like something like a valve issue.
What does Blue Smoke mean in an engine?
What Does Blue Smoke Mean? Blue smoke indicates your car engine is burning oil. It can happen when the piston rings, the valve guide seals, or other components of the engine get worn out or damaged, causing oil to leak. The oil will flow into the combustion chamber, and then it is being burnt together with the fuel, creating blue smoke.
How to check for Blue Smoke on start up?
One way to check is to go about 50 mph and take your foot off the gas. The engine vacuum will suck the oil past the guides, showing blue smoke. Before catalytic converters this test was easier. SteveC76 July 6, 2016, 5:15am #7 Valve seals are worn out.