I have a 93 lexus es300. Its burning oil pretty bad, smoke billowing up through the hood, and noticeable when stopped at a stoplight. Its not smoking out the exhaust. Ive had this problem for about 6 months, though it just started getting gradually worse, with noticable oil burning smoke. I brought it into a shop, and they told me the problem was the oil pan gasket. They replaced the gasket, but it didnt fix anything. When I look at the engine, there is very light oil leakage from the top of the engine(oil cap) all the way to the bottom. The majority of oil leakage is coming from right side of the engine(looks like from the cam seal) and also from the middle of the manifold. I assume the leakage is probably a combination of problems: valve cover gasket, cam/crankshaft seals, possibly valve seals? I know for sure its not a head gasket problem, and I'm betting that its not something major, but I'm not sure. Anyone else have any ideas on what it could possibly be? What should I replace? Thanks.
2007-12-26 07:50:38 · 4 answers · asked by ? 1 in Cars & Transportation ➔ Maintenance & Repairs
Firstly, go to a do-it-yourself car wash and shampoo your engine compartment so you can see better!!! Don't forget to check your PCV valve and hoses for obstruction. A problem here can cause excessive oil pressure to ooze out past gaskets and seals. Also, check your valve cover attaching bolts. If they are loose (from time and age) they will leak. Most modern engines don't need new gaskets unless you are using inferior oil or oil of an improper viscosity. Also using cheap gas (without proper detergent values) can cause premature meltdown of PCV hoses and gaskets. Another possibilty is a stuck oil pressure relief valve. This valve regulates the pressure of oil in your engine based on the oil temperature. If your engine is older and was weaned on regular and not synthetic oil, then there is a good possibility that you need to do a de-sludging to remove offending varnishes and internal sludge. You can tell the overall condition of the oil system by removing your oil filler cap, turning it over, and looking at it for waxy or flaky coatings. Whatever you see here is what the whole inside of your engine will look like. You may also need a new seal (gasket) for your oil filler cap, itself. Check the rubber here for pliability E-mail me for the de-sludging treatment I've found that works the best, if you want. Good Luck!!!
2007-12-26 08:10:47 · answer #1 · answered by Robert M 7 · 1⤊ 0⤋
quart for every 400 miles is way too much, especially for a honda engine. Are you sure the engine is burning the oil as opposed to leaking it. Check the underside of the car/engine for oil many times the oil only leaks out while driving and it is blown back over the under carriage, when this happens you don't get the typical spot on the pavement. If it is in fact burning that much oil then he will need to have the top end rebuilt and the pistons re-ringed and cylinder honed. Not a cheap Job.
2016-05-26 09:35:17 · answer #2 · answered by rochelle 3 · 0⤊ 0⤋
It has to be any one of your cam seals, valve cover gasket(s), just some sort of seal or gasket lol. Replace the oil cap anyways.
2007-12-26 07:55:55 · answer #3 · answered by Anonymous · 1⤊ 1⤋
You answered your own question. It's the head and/or valve gaskets. Get it into the garage and get busy. The gaskets are affordable. But w/ your car, it's all about the labor.
2007-12-26 07:55:27 · answer #4 · answered by The Eagle Keeper 7 · 2⤊ 1⤋