depends on the color of the smoke. make sure you do both wet and dry compression tests. that should clear up where the problem is. the rings or the valves. hope it helps. You may want to check for other causes of smoke. Water, gas running to rich. duboff
Valve guides and/or valve seals can be worn. Allows oil to get into the combustion chamber.Oil consumption and smoking are signs of either bad piston rings or bad valve guides/valve seals.A compression check on each cylinder can help determine which.
Worn rings or valve guides (more likely) Check compression.
Smoking on startup is generally due to worn valve guides or seals.
Burnt valve, blown head gasket, hole in piston, severely worn compression rings.
Worn rings or valve guides, possibly. You should check compression to ensure is kosher.
Yes, the oil will be pushed through the valve guides and be burned resulting in the car smoking.
More than likely your valve guides are going bad. They are fairly pricey to get replaced. If its not smoking to bad and you are not burning a lot of oil it won't really hurt anything.
Bad rings? Bad valve? Do a compression test Bad head gasker? Lazy oxygen sensor?
Could be rings are bad and allowing oil to be pumped up the cylinder walls to spark plugs Could be valve seals/guides allowing oil to comes down from valves into cylinder chamber Do a dry compression test Then a wet compression test (squirt oil int cylinder) and compare readings--if higher on a wet test then rings are probably bad Also if the oil is on the outside of the spark plug and not on the electrode, you have a leaking valve cover.
If it smokes only on start up, and then quits smoking in a few minutes then the valve seals are bad, and they fit over the valve stem and down onto the top of the valve guide. They stop oil from running down the valve stem and burned in the cylinder. They do not sell anything in a can that will fix that problem. You need to buy valve seals and have them installed by a trained mechanic. And they come in a plastic bag not a can. SORRY NO quick fix.
Yep. If your timing belt breaks, or jumps a few teeth, you will likely end up with bent valves. You may also find ruined valve guides, valve seats, pistons...
A compression test will show you if you have a burned valve.