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Old 02-17-2017, 01:15 PM   #1
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Burning Smell, Leaking Oil or Coolant?

Edit: Figured out that PS fluid was leaking out from the sensor. Gonna replace it tomorrow and hopefully fix the problem.

A quick synopsis of symptoms:
-Very slight burning smell after heavy acceleration
-Engine appears to be covered in some liquid, but doesn't seem thick enough to be oil
-No puddles of oil or coolant under Jeep after sitting overnight
-Heat is greatly diminished (although I think this is due to a clogged heater core)

Full story:
I can turn wrenches on suspensions all day, but when it comes to engine problems, I'm lost. I've been smelling a very slight burning smell lately. Usually only after I have to really get on the gas...which with a 2.5L is slightly more frequent than normal. I'm wondering what I need to look for the help solve this problem. I can get pictures of the engine and oil pan if that will help.

There haven't been any pools of oil or coolant under the jeep when I get in it in the morning. But the engine block is very dirty and seems wet (for lack of a better term) on the top as well as some components near the engine like hoses. Forgive my ignorance if this is normal. I've looked at the engine hundreds of times, but when something is wrong I tend to notice things I may have skipped over before, whether they're related to the problem or not.

In the interest of full disclosure, a few months ago I did have to replace my radiator. The cap blew off one night while I was driving. I didn't have the time to take care of it myself, but the shop I took it to did a full system flush and replaced the radiator, cap, and thermometer (I double checked to make sure it was the correct temp thermo). During the install, apparently a bolt holding the thermostat housing broke off which is making me wonder if any damage was done to the cooling system. I trust this shop a lot and I am 99.99% certain they would tell me if they really screwed something up, so I don't think it has much to do with that.

Finally, my heat hasn't been very hot lately. I believe that this is due to a clogged heater core though because one of the hoses was hot to the touch and the other was only slightly warm.

Thanks for reading and let me know what I need to check, what pictures anyone may need to see, or suggestions on how to progress.
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Old 02-17-2017, 01:33 PM   #2
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I think the 1st step I would do is completely de-grease the engine. After de-greasing your engine, you should be able to tell "easier" if you have a valve cover leak.

I would also double check your oil filter to make sure it's not loose and dripping oil on the exhaust (oil pressure typically goes up under acceleration).

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Old 02-17-2017, 01:38 PM   #3
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Quote:
Originally Posted by Dextreme View Post
I would also double check your oil filter to make sure it's not loose and dripping oil on the exhaust (oil pressure typically goes up under acceleration).
I was wondering if that could be the problem. How tight should the filter be? Should I be able to unscrew it with my hands if it's on there well enough? I admittedly have never changed the oil in my jeep. It's one of the few things that I figure is easier to pay someone to change and dispose of the oil for me.

And any recommendations on a de-greasing agent?
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Old 02-17-2017, 03:10 PM   #4
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Took another look. It might actually be PS fluid. Checked the levels and it was over filled.

Edit: After a little more looking, googling, and talking to JB, I believe it may be the Power Steering Pressure Switch. Something only 4 bangers have.
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