The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

**MidLifer** · 09-25-2017, 10:02 AM

Thanks again for the response. I feel nothing escaping from any of the orifices. The sound is definitely coming from the rear main area, and sounds like liquid and maybe gas being pushed through a tight space.

Just to rule out head gasket or other issues, tonight I'm going to do compression and leakdown. If those come up clear, then I'll buy a new rear cover and seal kit. Maybe the cover itself is warped and the high-pressure passage at the top is leaking. While I have it off I'll also check the oil filter barbell to be sure it's there and in the right place.

09-25-2017, 10:02 AM	#5
MidLifer Senior Member Join Date: Apr 2011 Location: South NJ Posts: 1,263	Re: oil pouring through rear main seal Thanks again for the response. I feel nothing escaping from any of the orifices. The sound is definitely coming from the rear main area, and sounds like liquid and maybe gas being pushed through a tight space. Just to rule out head gasket or other issues, tonight I'm going to do compression and leakdown. If those come up clear, then I'll buy a new rear cover and seal kit. Maybe the cover itself is warped and the high-pressure passage at the top is leaking. While I have it off I'll also check the oil filter barbell to be sure it's there and in the right place.