Why is there no oil leak in my car?
If you confirm that the PCV valve doesn’t have a problem and you ensured no internal leak inside the engine, the problem could be related to internal engine failure. There are different engine components, and many of them could be the culprit for oil overconsumption.
Is it possible to detect an oil leak?
Most oil leaks can be detected using the above methods, with a little bit of effort and detective work. However, some oil leaks can be very elusive, especially in high mileage vehicles where the engine may be very dirty and the oil leaks may not be so obvious.
How to diagnose and fix excessive oil consumption?
There are a few ways to test for excessive oil consumption. There are also some preventative measures you can take to mitigate the chances of it happening as an engine ages. Check the Oil Regularly Checking the engine oil every 500 miles is a good practice to get a read of how much oil an engine is consuming.
What causes an oil leak on a 4.7?
A stuck open valve will cause more then normal oil vapors to be sucked into the engine inlet. I had quite some oil consumption on my 4.7 and also didn’t see any smoke from the exhaust when accelerating, but finally saw it when decellerating and especially at night with an other car behind.
Why is there no sign of an oil leak?
If there is no evidence of a leak you may simply be burning oil due to a worn engine which may be due to worn piston rings. It may be time for a compression test.
Why is my car leaking oil after 7 years?
Oil can also produce blue smoke and unpleasant odors if it drips onto a hot exhaust manifold or exhaust pipe. After six or seven years of service, the engine may start to leak oil. The older the engine, the more likely it is to leak oil due to aging gaskets and seals.
What to do when you have an oil leak in your engine?
Leaky rear main crankshaft oil seals are time consuming to replace because they involve dropping the oil pan and unbolting the rear main crankshaft support cap inside the engine. On applications that have a one-piece rear main oil seal instead of a split seal, the flywheel has to come off, which means pulling the transmission.
What causes excessive oil consumption in an engine?
Below are the top 5 causes of excessive engine oil consumption. Worn Seals or Gaskets – If your vehicle has worn out or damaged crankshaft seals or valve cover gaskets, then it will be leaking oil.