What did I blow?
Thread Starter
Racer
Joined: Aug 2011
Posts: 487
Likes: 2
From: Henderson Co
St. Jude Donor '12-'13
What did I blow?
Running the Z hard today on a hard accell it started running rough and when I stopped it was smoking out the exhaust.
Got home and listened to the valvetrain for noise and it sounded normal, the engine was not overheating, coolant temp never was above 200.
Then I noticed oil leaking out of my cold air intake leaving a puddle on the ground.
after letting it sit 20 or 30 minutes I started it and it blew out the dipstick and blew oil everywhere including the ceiling of my garage! also leaked into the air filter again and left a puddle under the car.
Head gasket?
Intake manifold?
Got home and listened to the valvetrain for noise and it sounded normal, the engine was not overheating, coolant temp never was above 200.
Then I noticed oil leaking out of my cold air intake leaving a puddle on the ground.
after letting it sit 20 or 30 minutes I started it and it blew out the dipstick and blew oil everywhere including the ceiling of my garage! also leaked into the air filter again and left a puddle under the car.
Head gasket?
Intake manifold?
Race Director
Joined: Aug 2005
Posts: 13,592
Likes: 187
From: Hudson WI
NCM Sinkhole Donor
Sounds like you have a ton of crankcase pressure. That would make oil blow out of everything. If you have a temp sensor tool, I bet one cylinder will be cold and has internal damage. How is the oil pressure?
Just a guess, but I bet that you will also have damage to your checking account
Just a guess, but I bet that you will also have damage to your checking account
Last edited by timd38; May 11, 2013 at 05:32 AM.
Drifting
Joined: May 2005
Posts: 1,655
Likes: 9
From: Avon Indiana
St. Jude Donor '09
I agree that you have a serious blow by issue. Maybe a busted piston?
I don't have enough experience with hyper eutectic pistons to know what issues can go with them. I doubt you lifted a ring land. Maybe you cracked a ring(or several).. To me that sounds most likely.
Good luck and keep us posted.
Norm
I don't have enough experience with hyper eutectic pistons to know what issues can go with them. I doubt you lifted a ring land. Maybe you cracked a ring(or several).. To me that sounds most likely.
Good luck and keep us posted.
Norm
Le Mans Master
Joined: Aug 2007
Posts: 6,473
Likes: 297
From: Orange Park FL
Sounds like you have a ton of crankcase pressure. That would make oil blow out of everything. If you have a temp sensor tool, I bet one cylinder will be cold and has internal damage. How is the oil pressure?
Just a guess, but I bet that you will also have damage to your checking account
Just a guess, but I bet that you will also have damage to your checking account
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Thread Starter
Racer
Joined: Aug 2011
Posts: 487
Likes: 2
From: Henderson Co
St. Jude Donor '12-'13
It didn't sound like it lost a cylinder, more like it was missing from all the oil it was sucking in. When I first opened the hood to listen to the engine for valve noise it sounded normal at idle, no missing and no noise from anywhere.
I am going to do a compression test this morning and go from there.
I am going to do a compression test this morning and go from there.
Racer
Joined: Dec 2010
Posts: 418
Likes: 0
From: South Central Kansas
Question?? Was the oil recently changed? Dry sump system? Could it be way overfilled?
If not my guess would be a dropped exhaust valve and broken piston.
If not my guess would be a dropped exhaust valve and broken piston.
Last edited by 1fastbob; May 11, 2013 at 12:38 PM.
Instructor
Joined: Mar 2006
Posts: 222
Likes: 3
From: Campbell CA
Le Mans Master
Joined: Aug 2007
Posts: 6,473
Likes: 297
From: Orange Park FL
It didn't sound like it lost a cylinder, more like it was missing from all the oil it was sucking in. When I first opened the hood to listen to the engine for valve noise it sounded normal at idle, no missing and no noise from anywhere.
I am going to do a compression test this morning and go from there.
I am going to do a compression test this morning and go from there.
Thread Starter
Racer
Joined: Aug 2011
Posts: 487
Likes: 2
From: Henderson Co
St. Jude Donor '12-'13
Update
All cylinders are 150 to 170 (I am at 5500 ft above sea level so if that sounds low it should be) except the last cylinder on the drivers side, it had coolant on the plug and 25lbs compression, I'm going to pull the valve cover to look but I think the head(s) are going to have to come off to determine what happened.
Hopefully it is a head gasket problem or Cylinder head!
Hopefully it is a head gasket problem or Cylinder head!
Thread Starter
Racer
Joined: Aug 2011
Posts: 487
Likes: 2
From: Henderson Co
St. Jude Donor '12-'13
