3kay945:

How did it happen?

Just noticed some sound on my tyre legs. Thot it was alignment, later on I saw a light on dashboard signaling low engine oil. So I parked and went to top up.
Wen coming back from office the engine just knock for middle of road.

350k about to leave my overdrafted account

Grupo:


Firman
1.8kva.

I heard that working the piston and rings would compound the problem.

I don't understand why a new generator should be behaving that way

The problem won't be compound if handled by good mech.
Besides, you should return if it has warranty. If not, you can still complain to the seller bitterly on what you experiencing.

wickyyolo:



Just noticed some sound on my tyre legs. Thot it was alignment, later on I saw a light on dashboard signaling low engine oil. So I parked and went to top up.
Wen coming back from office the engine just knock for middle of road.

350k about to leave my overdrafted account

Eyah, sorry. But since you did top up the oil, what could be the cause again.?

realmindz:



which year is yours? I'm having similar issue with my 2011...though mine is 2 months after service then oil becomes short...

Mine is 2004

realmindz:



which year is yours? I'm having similar issue with my 2011...though mine is 2 months after service then oil becomes short...

Have a colleague with same problem. 2010 Camry, any solution?

UceeGod:
Except if the car is an old one, newer cars don’t normally need engine oil topping in-between service intervals. If you are having regular engine oil shortages in your car, then you need to know where the oil goes as this may indicate a looming engine problem. There are various reasons why the engine oil goes low frequently including high engine temperature, broken seal and gasket, worn out piston rings and valve guides, type of engine, driving style, type of oil used and also leaky oil pan and oil filter.

If the engine temperature does get higher than normal, thermal breakdown of the oil starts and the oil gets thinner thereby making it easier for the oil to get into the combustion chamber, get mixed with fuel and gets burned.

The valve cover protects the cylinder heads and entire engine from oil and water leaks. To do this, it is very important that the valve cover is oil tight. Since most valve covers are made with very thin pieces of metal, they can’t withstand the high pressure from inside especially at high temperatures. Now, to support the function of the valve cover is where the valve cover gasket is needed. The valve cover gasket is a molded rubber over a steel carrier or a full rubber molded seal shaped to conform to the valve cover flange to make sure that the valve cover properly seals the cylinder and prevents oil from coming out of the cylinder as the oil flows through. The gasket gets worn out either because of excessive internal engine pressure or old age. The result is an oil leak that may or may not be visible under the car or oil residue on the engine body. Another possible symptom is a smell of burning oil in the passenger cabin of the car.

The piston ring seals the combustion chamber from the crankcase while the valve guide supports the motion of the valves to seal off the combustion chamber within the valve train. Rings and valve guides do wear out as the car ages, excessive engine wear or poor car maintenance. As this happens, there will be too much clearance between touching surfaces and this will allow oil to get into the combustion chamber where it gets burnt and comes out from the exhaust as a heavy bluish smoke or a mild smoke. If the engine smoke is bluish while increasing engine speed and then disappears, then the problem is with the valve guide. If it produces a mild smoke constantly, then the problem is from the piston ring, a compression test will have to be performed on the engine to determine the condition of the piston ring.

Some engines do consume oil because of the way they are designed, most especially latest German models like Audi, BMW and Mercedez Benz. For example, for some latest BMW, Audi and Benz, it’s normal for their engines to burn 1litre of oil in less than 1000miles.

Continuous driving at high speeds/RPMs may increase oil consumption. This is because the more the engine speed the more pressure you put on the seals and gaskets and some of the oil finds its way around and gets burnt away in the combustion chamber.

Using a lower viscous(thin and lighter) oil than the one recommended for your car will cause a higher oil consumption. Low viscosity oil is thinner so it can leak past rings and valve guide seals easier than heavier viscosity oils. For most late model engines, using low viscosity synthetic oil (such as 5W-20, 0W-40 and 0W-20) is recommended.

It is common for the oil sump(pan) seal/gasket to wear out and start leaking oil. The oil pan gasket seals the oil pan to the bottom of the engine. Another possible reason for a leaking oil pan is a loose or improperly tightened oil drain plug/bolt. Having the wrong oil filter or using an old/slag filter seal can cause oil leak from the filter. The most common symptom is an observable oil leakage under the car.

http://autoclinix.com.ng/page/23/

Ok

MotorGuru:


The 4 cylinder Camry's of that generation (particularly the early models:2007-08) had defective piston oil control rings that gave out as early as 70,000 miles. This issue was particularly common to the US built camrys and the only remedy was a complete rebuild which required the replacement of the pistons and rings.
Also affected was the 2006-2009 Rav-4s using the same engine.

So if yours is already shorting oil, you have two options:
1. replace engine ( i would advise you source for Japanese built 2AZ-FE engines)
2. Replace Piston and rings assembly(not too comfortable with this though, as it requires original OEM parts and skilled expertise)

Who has replaced piston and rings in their camry. What's the condition afterwards? Please I'm having same issue