Crank shaft seal leak won’t stop

Welcome to the forum. Say hi in the new member thread when you have a chance. Following your post, curious why the leak still, but have you addressed the typical 1.4 pcv system failure leading to excessive crankcase pressure? Leading reason for oil leaks in this engine.

12ecofamilycar said:

Welcome to the forum. Say hi in the new member thread when you have a chance. Following your post, curious why the leak still, but have you addressed the typical 1.4 pcv system failure leading to excessive crankcase pressure? Leading reason for oil leaks in this engine.

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12ecofamilycar said:

Welcome to the forum. Say hi in the new member thread when you have a chance. Following your post, curious why the leak still, but have you addressed the typical 1.4 pcv system failure leading to excessive crankcase pressure? Leading reason for oil leaks in this engine.

Click to expand...

thanks man. I’m not familiar with the pcv failure you’re referring to could you provide more information. This is my primary vehicle so I need it back on the road asap

Problemchild said:

thanks man. I’m not familiar with the pcv failure you’re referring to could you provide more information. This is my primary vehicle so I need it back on the road asap

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The pcv system allows air pressure to leave the engine. When it's defective, pressure builds up in the engine and forces it to escape in other ways, such as through the valve cover gasket or crank seal. Does your crank seal make a whistling/high pitched squeal once the engine warms up?

Problemchild said:

I changed my Crank shaft seal in my 2011 chevy Cruz a month back because of a leak and all was well up until a couple days ago when I had to change the water pump and then the leak came back again. Today I changed it for the 3rd time in a month and I can’t get it to stop leaking. I torqued the bolt to 110. Is there a step I’m missing? View attachment 302517
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The crankcase seal is designed to seal under light vacuum or neutral crankcase pressure. I recommend pulling the oil dipstick and using a vacuum Guage to measure crankcase vacuum. Crankcase vacuum should be (12 - 18 inH2O). Which is, (0.882 - 1.323 inHg). Anything outside that range indicates a PCV issue as mentioned already.

2014 I-4 CRUZE, currently going for 105,000 miles. In 2016 driving home, not far from my dealer the car started a almost ungodly scream and exhasut smoke . At the dealer door, a service writer ran out...told me to immediately kill the motor (yeah...) and got the shop foreman. He started the car, heard and saw. They kept the car for 1 day. They called me...said the seal was "improperly installed at the factory". "Come get it...under warranty." Thanks. So far....all is well.
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Problemchild said:

thanks man. I’m not familiar with the pcv failure you’re referring to could you provide more information. This is my primary vehicle so I need it back on the road asap

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Check out the thread 2011-2016 Cruze Limited 1.4L PCV System Explained

In particular, look for the "orange nub" described. If that's missing, turbo pressure will go from the intake manifold into the crankcase and you'll have non-stop oil leaks.

Problemchild said:

I changed my Crank shaft seal in my 2011 chevy Cruz a month back because of a leak and all was well up until a couple days ago when I had to change the water pump and then the leak came back again. Today I changed it for the 3rd time in a month and I can’t get it to stop leaking. I torqued the bolt to 110. Is there a step I’m missing? View attachment 302517
View attachment 302515
View attachment 302516

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You should torque it to 110 Ib Ft or 150NM and tighten it an additional 60° ... Also in my experience, if the seal isn't the original GM it'll never seal right