Can a bad timing chain cause oil to burn?
A worn timing chain can cause some camshaft timing to become erratic and cause a host of engine running issues. Oil burning is usually an indication of excessive engine wear (piston rings, valve guides, etc).
Can oil leak from timing chain cover?
Oil is leaking in the center of the vehicle The timing cover has a gasket that allows the cover to be securely attached to the engine block. If you notice that oil is leaking from the center of the motor, near the front, it may be due to a faulty timing cover or timing cover gasket.
Can too much oil affect timing chain?
If you don’t get regular oil changes, the quality of the oil will diminish. This means that it won’t be able to lubricate as well as it used to. Once that happens, your timing chain will wear out faster than normal.
Why does my Toyota Sienna have an oil leak?
Well I learned the hard way to always have a mechanic check a used car even if you think you know a little bit lol. 2007 Sienna LE 104k miles. I take it to the dealer after buying it and find out it has had the engine swapped already. And theres a oil leak. Sigh. Dealer thought it was the VVT gasket leaking so they fixed that!
How to fix timing cover on Toyota Sienna?
Replaced the valve cover gaskets on my 2007 Sienna about a year ago with the engine in the car. This job requires lots of patience. In all it took me 10 hours to replace the rear gasket. To do this right you will need. 3. There are 2 small gaskets inside the cover at oil galleys (dealer only)
Where is the oil coming from in the timing cover?
Re-sealing the timing cover isn’t a super quick job even if it could be done with the engine in the vehicle. Working on the engine is certainly a lot easier with the engine removed. He had it cleaned up when I saw it on the lift. The oil was coming from right where the bolt is for the VVT line.
What causes oil to separate from the timing chain?
Over time, oil begins to separate as it heats up and is exposed to natural solvents found in gasoline. If the timing chain begins to wear out, small metal pieces can break off the chain and find their way into the oil pan.