What causes wheel seals to leak?
Easily overlooked, your hubcaps and axle vents being plugged or damaged can be a factor for wheel seals leaking. As the oil in your wheel end heats up, it will begin to create pressure and that pressure needs to be released somewhere. That pressure is typically discharged through the axle vent and small hubcap vent.
What does a leaking axle seal do?
An axle seal leaks more during highway driving, so the oil drops on the driveway may not always be present. As more fluid is leaked out, the transmission fluid level drops and the transmission will start slipping. If not caught in time, the transmission may even get permanently damaged.
What to do about an oil leak in a Toyota Sienna?
I didn’t want to sink a lot of time and money into the 2008 engine to fix the head gasket, only to have to tear it apart again in a year or two to fix the VVT-i gears issue, which involves some serious parts costs. Hopefully your leak is just the gaskets on the banjo bolt.
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)
What should I do if my wheel seal has gone bad?
If the wheel seal has gone bad, you will notice grease leaking from the wheel bearings and noise coming from the wheels. Step 1: Prepare your work area. Make sure the vehicle is on a level, safe surface, and you have set the parking brake. Step 2: Loosen the lug nuts.
Is there a recall on the Toyota Sienna?
The recall for the VVT was just to replace the rubber hose and not upgrade to the metal line. Some members have changed out that line to a metal one but it is on there dime. Not Toyota. All I can say is that area needs to be cleaned up and source the leak.