2002 Nissan Altima Repair Question
Excess oil consumption
Asked by chrislarsenAnswer
Gotta be leaking if you can smell it under the hood. There's two ways to find an elusive leak. One is by adding a small bottle of dark purple dye, driving a little, then searching with a black light. The dye will show up as a bright yellow stain that you can follow back to the source. That is usually used when there's an obvious leak but you can't find from where.
When there's little pooled oil or drips, you can use a smoke machine to inject a white, non-toxic smoke into the dipstick tube, then you look for where that smoke sneaks out. That will work when the leak is in a non-pressurized part of the engine such as the oil pan, cylinder head cover, and the return passages. It might not work if the leak is in a pressurized passage.
No leaks means oil is being burnt in cylinders mostly due to worn valve seals.
Thx alot looked all around possible places on engine where there could be a leak and nothing
How can I be smelling it curbing whenever hot bout no smoke and no leak.there is smoke from tailpipes but not engine at all.
If the engine is burning oil, the dye will show up inside the tail pipe, but that doesn't explain why you're smelling it.
That's what I'm trying to determine, why its going thru so much oil but not leaking and smelling very bad inside car if any windows are down at all. Going thru about a quart of oil pier fill of fuel.
Smoking from exhaust is usualy an indication of oil being burnt in cylinders if the smoke is grey.
Smoke is black initially than blue. So far looked 4 of 6 spark plugs and saw small on one amount of oil on one but that's it no leakage around valve covers or oil pan or any other spot where leak is possible. Very mind boggling and has no profane issues at all been this way froe over a year....
What is so mind boggling about this? The valve seals are bad allowing oil to get into the cylinders to be burnt.
Just that low miles on motor and that smell whenever engine in warm to where you can't drive work windows down... That's mind boggling without a leak .