Oil leak back of engine
Thread Starter
Junior Member
Joined: Mar 2024
Posts: 21
Likes: 1
From: South Florida
2010 GLK350 RWD
Oil leak back of engine
The video is the back passenger side of the engine. I am aware of the oil leak it looks like at the pcv valve, but i am conecered about the one by the dipstick and intake manifold, does anyone know what this is? https://youtube.com/shorts/KD8nC-ML6TQ?si=W2HC7Rc46o6Rs9Bs
Super Member
Joined: Feb 2023
Posts: 728
Likes: 271
2011 GLK 350 4Matic
It's hard to say since you didn't get a clear shot of the oil pan (PCV cap). There seems to be a path from that to the area you're concerned about - oil always runs downhill, so I'd suggest trying to clean that part of the engine off well enough that you can see the "new oil" path. Or you could try adding some UV dye to the oil to trace the path that way.
The oil pan / PCV cap is the most common leak area (by far) - other than that, I'd say it is most likely to be a valve cover gasket.
The oil pan / PCV cap is the most common leak area (by far) - other than that, I'd say it is most likely to be a valve cover gasket.
Thread Starter
Junior Member
Joined: Mar 2024
Posts: 21
Likes: 1
From: South Florida
2010 GLK350 RWD
It's hard to say since you didn't get a clear shot of the oil pan (PCV cap). There seems to be a path from that to the area you're concerned about - oil always runs downhill, so I'd suggest trying to clean that part of the engine off well enough that you can see the "new oil" path. Or you could try adding some UV dye to the oil to trace the path that way.
The oil pan / PCV cap is the most common leak area (by far) - other than that, I'd say it is most likely to be a valve cover gasket.
The oil pan / PCV cap is the most common leak area (by far) - other than that, I'd say it is most likely to be a valve cover gasket.
MBWorld Fanatic!
Joined: Jun 2021
Posts: 1,013
Likes: 281
From: South Texas
2014 GLK350 base model (active) ; 2001 E320 base (retired); 2001 Wrangler soft-top
You're losing "roughly" one quart of oil per 1,000 miles?!?!
That's a CATASTROPHIC problem ... and because you're questioning "what to do", you better get it to a dealer or qualified MB shop asap.
The only "oil leak" issue we've had on our 2014 GLK Base is because the gasket on the oil filter cover was degraded, which resulted in minimal oil loss.
I would never drive a "1 quart drain in 1k miles" vehicle!!
That's a CATASTROPHIC problem ... and because you're questioning "what to do", you better get it to a dealer or qualified MB shop asap.
The only "oil leak" issue we've had on our 2014 GLK Base is because the gasket on the oil filter cover was degraded, which resulted in minimal oil loss.
I would never drive a "1 quart drain in 1k miles" vehicle!!
Member
Joined: Mar 2017
Posts: 182
Likes: 45
From: Toronto, Canada
2010 GLK350 4matic
The oil separator on the back passenger side of the engine is covered in dirt/sludge, so i dont doubt that is leaking. But could that cause the oil to be leaking from the bottom of the intake/ throttle body area because it is not filtering out the oil from the air properly?It is worth noting that the other low load oil air separator towards the front on the driver side of the engine is also covered in oil/sludge. I am loosing roughly 1 qt per 1000 miles.
Thread Starter
Junior Member
Joined: Mar 2024
Posts: 21
Likes: 1
From: South Florida
2010 GLK350 RWD
The coolant is okay, the oil cooler at the front of the engine has been replaced in 2019, I dont understand the other part, it seems there is oil dripping down the bottom of the throttle body and intake tube going to the throttle.
Thread Starter
Junior Member
Joined: Mar 2024
Posts: 21
Likes: 1
From: South Florida
2010 GLK350 RWD
You're losing "roughly" one quart of oil per 1,000 miles?!?!
That's a CATASTROPHIC problem ... and because you're questioning "what to do", you better get it to a dealer or qualified MB shop asap.
The only "oil leak" issue we've had on our 2014 GLK Base is because the gasket on the oil filter cover was degraded, which resulted in minimal oil loss.
I would never drive a "1 quart drain in 1k miles" vehicle!!
That's a CATASTROPHIC problem ... and because you're questioning "what to do", you better get it to a dealer or qualified MB shop asap.
The only "oil leak" issue we've had on our 2014 GLK Base is because the gasket on the oil filter cover was degraded, which resulted in minimal oil loss.
I would never drive a "1 quart drain in 1k miles" vehicle!!
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MBWorld Fanatic!
Joined: Sep 2015
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2013 glk 350
No he isn’t being an ***, you might be burning a lot and leaking a lot . You didn’t state miles but the PCV at the back of the motor is known to loose it seal leading to excessive vacume at about 70,000 miles , you can test that with a vacume test and lifting off the oil cap with the motor running , there should not be much suction . You probably have several leaks from what you say. What you’re leaking or burning is a lot , it should be zero .
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Thread Starter
Junior Member
Joined: Mar 2024
Posts: 21
Likes: 1
From: South Florida
2010 GLK350 RWD
No he isn’t being an ***, you might be burning a lot and leaking a lot . You didn’t state miles but the PCV at the back of the motor is known to loose it seal leading to excessive vacume at about 70,000 miles , you can test that with a vacume test and lifting off the oil cap with the motor running , there should not be much suction . You probably have several leaks from what you say. What you’re leaking or burning is a lot , it should be zero .
Member
Joined: Mar 2017
Posts: 182
Likes: 45
From: Toronto, Canada
2010 GLK350 4matic
I have 110k miles, and the pcv is caked in oil and grime, as well as that side of the engine so im going to order both high and low load pcv, thats probably causing some of my oil loss. But my question is would that be the cause of why some oil is dripping down the back on the intake manifold by the throttle?
when I had decent amount of oil in the hose from pcv to the air intake elbow/TB it was isolated to inside the units, no external leaks.
