Burning oil smell
05-29-12, 11:07 AM
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Burning oil smell
I am new to the lexus is300 and am looking to buy one. I went and drove one today that has a very problems but the most worrisome one being a burning oil smell coming from under the hood. The owner tells me it is the cam seals, but I am not sure about that. There is old oil on the intake side of the block and motor mount. He said this is from the valve cover gasket that he changed. Before I move forward I just wanted to see if anyone had any ideas. The other things are small but the oil smell bothers me
05-29-12, 02:31 PM
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could be cam seals. but it could be other things also like a slow leaking head gasket ect. i would be very careful and have a friend that knows what he or she is looking at. just to give a more definite answer
05-29-12, 07:34 PM
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I've never seen any car with a head gasket leaking externally so much as to cause this type of issue...
The 2JZ is a relatively easy motor to find oil leaks on, as there are very few places it can leak from... you have cam seals, crank seal (front and rear) and valve cover seals... those are your slow leak areas - problem with cam or crank seals is that they will require a timing belt job, which can be pricey if you can't do it yourself... valve cover seals are pretty easy, though they do require removal of the upper intake and throttle body to get to them...
on the driver side cam, you will find the variable valve timing actuator - it is a potential source of high pressure leak, though it is not common to leak - there is a metal feed line off the side of the engine block... as it is on the intake side, probably not the source...
The 2JZ is a relatively easy motor to find oil leaks on, as there are very few places it can leak from... you have cam seals, crank seal (front and rear) and valve cover seals... those are your slow leak areas - problem with cam or crank seals is that they will require a timing belt job, which can be pricey if you can't do it yourself... valve cover seals are pretty easy, though they do require removal of the upper intake and throttle body to get to them...
on the driver side cam, you will find the variable valve timing actuator - it is a potential source of high pressure leak, though it is not common to leak - there is a metal feed line off the side of the engine block... as it is on the intake side, probably not the source...
05-29-12, 08:44 PM
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I've never seen any car with a head gasket leaking externally so much as to cause this type of issue...
The 2JZ is a relatively easy motor to find oil leaks on, as there are very few places it can leak from... you have cam seals, crank seal (front and rear) and valve cover seals... those are your slow leak areas - problem with cam or crank seals is that they will require a timing belt job, which can be pricey if you can't do it yourself... valve cover seals are pretty easy, though they do require removal of the upper intake and throttle body to get to them...
on the driver side cam, you will find the variable valve timing actuator - it is a potential source of high pressure leak, though it is not common to leak - there is a metal feed line off the side of the engine block... as it is on the intake side, probably not the source...
The 2JZ is a relatively easy motor to find oil leaks on, as there are very few places it can leak from... you have cam seals, crank seal (front and rear) and valve cover seals... those are your slow leak areas - problem with cam or crank seals is that they will require a timing belt job, which can be pricey if you can't do it yourself... valve cover seals are pretty easy, though they do require removal of the upper intake and throttle body to get to them...
on the driver side cam, you will find the variable valve timing actuator - it is a potential source of high pressure leak, though it is not common to leak - there is a metal feed line off the side of the engine block... as it is on the intake side, probably not the source...
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