Car Problem Reports

Toyota Avalon Valve Cover Gaskets May Leak Oil

Toyota Avalon Problem
16 Reports
Me Too

Model Years Affected: 1996, 1997, 2000

Engine Affected: 3.0L V6

Average Mileage: 172,700 mi (80,000 mi - 298,572 mi)


An engine oil leak may develop from one or both valve cover gaskets, especially the one near the firewall.

  • Visitor, , 3.0L V6, 200,000 mi

    replaced gaskets

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  • Visitor, , 3.0L V6, 125,000 mi

    Car started poofing blue smoke after driving on freeway and a cold restart. Only under these conditions. Tried to have it fixed, repair guy said oil had leaked on engine. Attempt at fixing made it worse with an enormous cloud of smoke coming from exhaust pipe.

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  • Visitor, , 3.0L V6, 95,000 mi

    found out about the problem when having my oil changed. was told to make sure to keep oil at correct level between changes. Have not had the covers changed yet.

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  • Visitor, , 3.0L V6, 200,000 mi

    Acrid burning oil smell from under the hood, which even gets inside the cabin when stopped at a traffic light. It's the rear cylinder bank valve cover gasket that is the culprit. The oil doesn't drip onto the ground - it just gets burned up on the rear exhaust manifold. It's a bit of a bear due to the way Toyota mounted the V6 engine, with the front cylinders almost vertical and the rear cylinders almost horizontal - the rear valve cover is close to the firewall. 1MZ is still a great motor, though!

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  • Visitor, , 3.0L V6, 298,572 mi

    Oil leaking on driveway and burning smell after driving approximately 5 minutes. Had repaired (replaced both valve cover gaskets) at dealer for $692.

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  • Visitor, , 3.0L V6, 157,000 mi

    Bought it used; front gasket had been replaced[or was claimed to have been]but not rear gasket. The burning smell is most evident on cold days when heater is bringing hot air from under the hood, after the car has been driven first time in a given day, fully warmed and then is stationary but engine and heater are still running. Heater blower then carries smell into car
    for a short time.
    Have not had it repaired; too many other items on car needed to be replaced...all brakes, full exhaust system[CC included], and tomorrow front struts are being replaced.

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  • Visitor, , 3.0L V6, 222,000 mi

    oil leaking from cover on hot pipes

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