Water/Oil Problems
11-17-2015, 12:42 PM
#21
Junior Member
Thread Starter
Join Date: Sep 2015
Location: Knoxville TN
Posts: 47
Total Cats: -3
My afrs weren't terrible but in the lean range. I stayed out of boost for the most part. I'm considering starting over and building the motor again just to get everything cleaned up. I'm at work for a couple of more hours so as soon as I get off I'm gonna go tinker with it some.
Reply
0
0
11-17-2015, 01:02 PM
#23
Boost Pope
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,022
Total Cats: 6,589
No, although it may cause danger to the manifold and blow the welds on your intake.
The head gaskets in the '94 and later engines are made of three thin layers of steel, rather than the composite material most of us are familiar with. They're pretty hard to kill, but also less tolerant of warpage / unevenness in the block or head mating surfaces.
Have you done a warm compression test? That will likely give some idea as to whether the head-to-block mating interface is faulty. Likewise, you could run the engine (while cool) with the radiator cap removed and look for bubbles coming up out of it.
The fact that you've scored a trifecta here (smoke, coolant in oil, oil in coolant) is confounding, but there are a pretty finite number of places it could be happening, and most of them are in the mm or so between the block and the head.
The head gaskets in the '94 and later engines are made of three thin layers of steel, rather than the composite material most of us are familiar with. They're pretty hard to kill, but also less tolerant of warpage / unevenness in the block or head mating surfaces.
Have you done a warm compression test? That will likely give some idea as to whether the head-to-block mating interface is faulty. Likewise, you could run the engine (while cool) with the radiator cap removed and look for bubbles coming up out of it.
Last edited by Joe Perez; 11-17-2015 at 07:22 PM.
Reply
0
0
11-17-2015, 04:35 PM
#29
Junior Member
Join Date: Nov 2013
Location: Sardinia, Italy
Posts: 396
Total Cats: 56
When I've built the engine, during the break-in I saw oil in the coolant. I changed the coolant twice and I never saw again. It was the honing at the machine shop: every coolant route was filled with oil.
Can it be your case?
Can it be your case?
Reply
0
0
11-17-2015, 05:04 PM
#33
Boost Pope
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,022
Total Cats: 6,589
I think I may be mixing up threads here.
Did I imagine it where the OP said he was getting smoke out the tailpipe? Or was that a different thread?
Regardless: the engine overheated and now it won't start. This doesn't sound like residual machining oil.
Did I imagine it where the OP said he was getting smoke out the tailpipe? Or was that a different thread?
Regardless: the engine overheated and now it won't start. This doesn't sound like residual machining oil.
Reply
0
0
11-17-2015, 07:21 PM
#35
Boost Pope
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,022
Total Cats: 6,589
Too many weird problems going on at the same time...
I'm now far less certain that the problem is at the head-to-block interface. A crack somewhere is likely.
Do a cooling system pressure test.
And let's have some more detail on this "no start" condition. Does it crank over freely but merely won't fire? What was really going on when it overheated and shut down? Did the engine act as though it was siezed when you tried to re-start it immediately thereafter?
I'm now far less certain that the problem is at the head-to-block interface. A crack somewhere is likely.
Do a cooling system pressure test.
And let's have some more detail on this "no start" condition. Does it crank over freely but merely won't fire? What was really going on when it overheated and shut down? Did the engine act as though it was siezed when you tried to re-start it immediately thereafter?
Reply
0
0
