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Blown rear main seal

14SierraZ71

By 14SierraZ71
in Troubleshooting & Recalls

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HondaHawkGT Senior Enthusiast

HondaHawkGT

Posted
Posted
16 minutes ago, Grumpy Bear said:

Question sir. Since the crankcase pressure, thus the valve cover pressure is higher than that between the MAF and the TB what device is moving the gasses? Since both the, as you say, inlet to PS valve cover and the DS outlet share the same inlet tube where is the pressure differential coming from that drives the circulation? 

Just to be absolutely clear, I am not in any way claiming that the CC blew out his rear main seal. I've seen rear main seals fail on brand new vehicles of any brand. I worked with a guy that got tired of problems with domestic brand  trucks, so he bought a brand new 2015 Toyota Tundra  and needed a new rear main seal before his first oil change. It happens. I'm just pointing out that guys that use a modify their PCV system and use a CC in climates where temps are routinely below zero can have unintended consequences, including stalling while you're driving like it did for me.

 

Under normal conditions there's a vacuum created by the pressure differential created by the throttle body. When the system is partially or completely blocked, blow-by can create a pressurized crank case. Normally the oil filler cap vent should vent this gas (or the oil dipstick should do this if it doesn't). My stalling was caused by the disruption that an iced up PCV line has on idle air and what the MAP sensor is reading. I would stall while coasting at very low speeds when the engine would try to drop down to idle.

 

 

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Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
2 minutes ago, HondaHawkGT said:

Just to be absolutely clear, I am not in any way claiming that the CC blew out his rear main seal. I've seen rear main seals fail on brand new vehicles of any brand. I worked with a guy that got tired of problems with domestic brand  trucks, so he bought a brand new 2015 Toyota Tundra  and needed a new rear main seal before his first oil change. It happens. I'm just pointing out that guys that use a modify their PCV system and use a CC in climates where temps are routinely below zero can have unintended consequences, including stalling while you're driving like it did for me.

 

Under normal conditions there's a vacuum created by the pressure differential created by the throttle body. When the system is partially or completely blocked, blow-by can create a pressurized crank case. Normally the oil filler cap vent should vent this gas or the oil dipstick should pop out. My stalling was caused by the disruption that an iced up PCV line has on idle air and what the MAP sensor is reading.

 

 

Bear with me please. I own a V6 which has a single sided system so this is new to me for the model under discussion. 

 

Are you saying that the PS side is upstream of the TB and the DS is tied to the plenum? 

lapoolboy Senior Enthusiast

lapoolboy

Posted
Posted
34 minutes ago, Grumpy Bear said:

See your catching some heat. Sorry to see that. 

 

Well it isn't tantamount to fraud; it IS fraud. So I admire your moral code and say "Hats off"! 

 

One of your detractors says: 

 

I find it interesting that ALL people hate being lied to but many of those same people don't mind lying.

 

This fella ridicules good behavior? Don't even know what to say to that. Especially since he seems truly proud of it.

He also indicates that it is his belief that 'rest of us' is in the majority. 

Don't look now but he is correct. 

Sad isn't it? 

 

Even if no one else noticed. If they did notice and didn't speak up then they, in principle agree with him. 

 

Again, Hats off! :thumbs:

Hahaha!

 

If you truly believe taking aftermarket parts off a truck PRIOR to taking it in to the dealer to avoid the hassle and circumvent their quickness to blame in an effort to avoid paying out any warranty repair is FRAUD, then you sir have probably been a victim of fraud yourself.  Keep fighting the good fight.  

 

I, for one (apparently, since you say I'm not in the majority), will continue to hedge my odds by not giving the dealer any leg to stand on to deny my warranty.  By your logic, I guess all the handheld tuner manufacturers are bad guys too by printing in their instructions "Return vehicle to stock prior to any dealer service".  Shame on them!  

HondaHawkGT Senior Enthusiast

HondaHawkGT

Posted
Posted
16 minutes ago, Grumpy Bear said:

Bear with me please. I own a V6 which has a single sided system so this is new to me for the model under discussion. 

 

Are you saying that the PS side is upstream of the TB and the DS is tied to the plenum? 

Oh  crap I was thinking of the last gen trucks. I forgot that the PCV routing was changed for 2014. I was mixing up the new trucks with the way the older 5.3 trucks were routed.

 

The big plenum on a stock 2014-18 5.3 has two upstream points feeding the left and right side valve covers. The gas enters the valve covers and exits through a port below the throttle body enters the side of the intake manifold. Sorry for the confusion.

 

The cheaper EE catch can has you routing from the valley port below the throttle body, to the CC, then to the side port on the intake manifold (on drivers side). I'm not familiar with the latest 4.3's PCV setup.

KARNUT Senior Enthusiast

KARNUT

Posted
Posted

Except for turbo engines gas and diesel hand held turners were pretty harmless though the warranty period on most vehicles. Removing them prior to taking them to the dealer is not fraud. It’s protecting your self from fraud from them. I got more HP from E-85, thank you GM, than I could from a premium tune with a hand held turner.


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mookdoc6 Senior Enthusiast

mookdoc6

Posted
Posted

Well that's a wrap!  Notice once it became obvious that the system was installed properly...had to be 100% obstructed PCV system....the Elite guy is gone with the wind....lol.  What is the remedy for you northern folks?  Fatter hose I.D's and can placement as close to the engine block?

SS502 Senior Enthusiast

SS502

Posted
Posted

I’m bowing out of this...with the 2018 set up I live with, I just don’t see this happening (completely blocked PCV system) to me and blowing out my RMS. Adios all ?

TXGREEK Senior Enthusiast

TXGREEK

Posted
Posted
Hahaha!
 
If you truly believe taking aftermarket parts off a truck PRIOR to taking it in to the dealer to avoid the hassle and circumvent their quickness to blame in an effort to avoid paying out any warranty repair is FRAUD, then you sir have probably been a victim of fraud yourself.  Keep fighting the good fight.  
 
I, for one (apparently, since you say I'm not in the majority), will continue to hedge my odds by not giving the dealer any leg to stand on to deny my warranty.  By your logic, I guess all the handheld tuner manufacturers are bad guys too by printing in their instructions "Return vehicle to stock prior to any dealer service".  Shame on them!  


To this day, best thought out comment I’ve heard you say, [emoji1303]


Sent from above
TXGREEK Senior Enthusiast

TXGREEK

Posted
Posted
I’m bowing out of this...with the 2018 set up I live with, I just don’t see this happening (completely blocked PCV system) to me and blowing out my RMS. Adios all [emoji106]

You see, this is why I still haven’t had one installed. Lol


Sent from above
lapoolboy Senior Enthusiast

lapoolboy

Posted
Posted
1 minute ago, TXGREEK said:

 


To this day, best thought out comment I’ve heard you say, emoji1303.png


Sent from above

 

Well, thank your sir!  Sometimes I'm able to form my own thoughts.

TXGREEK Senior Enthusiast

TXGREEK

Posted
Posted
If the catch can wasn't the cause I truly have no idea what it would've been. I baby the crap out of this thing. Im even stuck in the old mindset of changing the oil every 3,000 miles. Sad to say after being a GM guy my whole life that this just might be the last gm I ever buy. It just seems like the the execution of so many categories was missed on these trucks. 

 

As it has been with every other manufacturer as well. Every manufacturer knowingly puts out for sale something they know they’ve had issues with, every!

 

 

Sent from above

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
2 hours ago, TXGREEK said:

 

As it has been with every other manufacturer as well. Every manufacturer knowingly puts out for sale something they know they’ve had issues with, every!

 

 

Sent from above

And we seem to believe that a majority sets morality. I expected this. This school that says it's okay if I can get away with it is quite the fashion these days. Yes even manufactures participate. You get no argument from me on that accord. Still, a lie is a lie. It doesn't have a color. :seeya: 

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
3 hours ago, HondaHawkGT said:

Oh  crap I was thinking of the last gen trucks. I forgot that the PCV routing was changed for 2014. I was mixing up the new trucks with the way the older 5.3 trucks were routed.

 

The big plenum on a stock 2014-18 5.3 has two upstream points feeding the left and right side valve covers. The gas enters the valve covers and exits through a port below the throttle body enters the side of the intake manifold. Sorry for the confusion.

 

The cheaper EE catch can has you routing from the valley port below the throttle body, to the CC, then to the side port on the intake manifold (on drivers side). I'm not familiar with the latest 4.3's PCV setup.

No problem. I like learning new things and making mistakes is a part of that. I really appreciate your honest and on point correction. Wish this was more common. Again. Thanks. :thumbs:

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