Burnt Oil Smell behind engine

ANSWER : Hi Larry. As the co-founder or a non-profit that focuses on education, awareness and screening for respiratory diseases targeting the automotive community, I am happy to answer a few questions for you to clear up some facts. First, there are multiple materials, chemicals, and substances on a vehicle that are emitted from the mechanical actions of the vehicle that MIGHT reduce respiratory function and lead to a diagnosis of COPD (Chronic Obstructive Pulmonary Disease) or other respiratory diseases. However, it is nearly impossible to prove the precise source that can cause respiratory problems. Whether due to excessive exposure to these substances, social choices (smoking), workplace environment, indoor air quality in the home, even certain genetic conditions, it is possible for lung function to decrease over time. At Right2Breathe.org, we always recommend that anyone that is experiencing any breathing issues, visits their primary care physician and have them complete a spirometry exam (a non-evasive breathing test). This will allow them to measure your lung’s function and begin the official diagnosis process. Thank you very much for asking this important question. Feel free to contact us if you have further questions.

ANSWER : The fuel pump will not stay on if you loose oil pressure. This is why it is shutting off. The loss of oil pressure may be from bad crankshaft bearings or camshaft bearings. The engine oil pan should be removed and the oil pump needs to be checked to ensure that you put in the pick up tube seal to the pump and connected the pump to the block. Then remove at least one main bearing cap and inspect the bearings for excessive wear and crankshaft damage. If you need some help with this, consider YourMechanic, as a certified technician can help diagnose the issue with your oil pressure firsthand and help you fix it accordingly.

ANSWER : You might have a problem with the oil filter leaking when you rev the engine and increase the oil pressure. This can be from a collapsed oil filter media or excessive oil pressure from the engine. I recommend having the oil and filter replaced using a good quality filter and have the oil leak verified to be from the filter. Make sure to not run the engine low on oil. If you are finding you do not want to drive with the leak, a mobile technician from YourMechanic can come to your home or office, and replace both your filter, and oil.

ANSWER : Oil additives are not recommended by any vehicle manufacturer for any reason. Additives that purport to resolve oil leaks are useless, a waste of your money, and may result in engine damage. Every vehicle manufacturer strongly recommends against use of these materials. There is only one recommended and approved repair strategy when it comes to oil leaks: fix the leak.

You can only add the manufacturer specified amount of oil to an engine. If you add too much oil, or too little oil, that will cause engine damage. You should check the engine oil dipstick to determine if there is presently too much oil in the engine. If there is too much, the excess will have to be removed to prevent engine damage.

The leak that you are referring to can be repaired if you request an oil leak diagnostic. If you have further questions or concerns as you decide what to do, do not hesitate to re-contact YourMechanic because we want you to make the most of your repair dollars and help you get the best possible results.

ANSWER : Hello there, you have a long series of issues going on with your 2013 Hyundai Sonata. If you keep getting a repeating oil light on than there is likely a fault in that system.

Since this fault has lasted after the engine was replaced it could be a oil pressure sensor, wiring harness fault, ECU fault, oil pump, oil strainer clogged, or low oil pressure.

To diagnose this issue properly you need a complete vehicle inspection to start from square one and identify the root cause of all this.

ANSWER : It is possible that they put in the wrong viscosity oil. In rare instances, a defective filter will also cause low pressure. If there is too much oil, it will aerate and cause low pressure. Be sure the oil level is really not above "max". The P2187 code will appear if the oil fill cap is not tight but it will also appear due to a myriad of causes because that code only "generally" identifies a lean running condition. Consequently, numerous parts would have to be tested including the O2 sensor, gas cap seal, manifold air leaks, any vacuum leak anywhere including PCV and EVAP systems, exhaust leaks, and fuel system faults such as failing fuel pump, clogged filter and more. Since the car has relatively low mileage, you would not expect a failed oil pump, although the pressure sensor (or switch) could be bad. However, the occurrence of the oil pressure warning light is quite coincidental to the oil change, thus I would suggest bringing the car back and asking them to redo with a new filter and double check the viscosity of the new oil that they use. If the problem persists after that, you will have to test actual operating oil pressure (at idle for instance) as well as the oil pressure switch. Finally, if the oil pressure warning light comes on continuously, unless the warning circuit itself is malfunctioning, that means the oil pressure is too low to operate the engine without damaging it. Anytime the light comes on for more than literally an instant, you should shut down the car and thus an issue like this obviously has to be repaired.

If you’d like, a YourMechanic certified mechanic can come to your home or place of business to inspect the vehicle and perform an oil pressure light is on inspection to diagnose the vehicle and suggest potential repairs.

ANSWER : This light will usually come on when one of two things are happening. Either the motor is in fact low on oil or the oil pressure sending unit is not working properly and may be producing a faulty reading. I would recommend first, to check the actual oil level in the motor by using the dipstick. Be sure the oil level reaches the "full" mark. If this registers as "full" then you likely have a faulty oil pressure sending unit. I would recommend having an expert from YourMechanic come to your location to take a look at your vehicle to determine what may be causing your low oil pressure light to come on.

ANSWER : Hi there. If you are getting gray smoke from under the vehicle and in the engine compartment, then there is an external oil leak. The oil is leaking onto the exhaust pipe and then burning off. This is why you are not seeing any oil on the ground. As for the engine smoking some oil, then the valve guide seals on the cylinder heads are possibly leaking causing oil to enter the combustion chamber through the intake valves.. Another way that the engine could be getting oil into the combustion is having a positive crankcase ventilation valve (PCV valve) being stuck causing oil to enter the intake system. To check this, check the intake tubing and see if there is any oil present. If there is oil present, then I recommend replacing the PCV valve to prevent any oil from going into the combustion chamber. The external oil leaks could be, a leaking front engine seal, a leaking rear main seal, a loose oil filter, oil cooler lines could be split or loose, or a valve cover gasket could be leaking. If you need further assistance with your engine using a lot of engine oil, then seek out a professional, such as one from Your Mechanic, to help you.