Author Topic: water in oil  (Read 3331 times)

79SE301M

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water in oil
« on: September 16, 2013, 07:57:05 PM »
When I brought my Trams Am home for the first time I filled the rad with water.  It was completely dry.   Over hours the level kept dropping.    Pulled dipstick and noticed it was overfull.   This is with the car not running just sitting.  After days sitting, the oil level settled at about 2 inches above the full mark.

Put a cooling system pressure system tester on and surprisingly it takes over an hour to leak down from 15 psi to 0.   I would  have thought a cracked block, head or blown head gasket would leak much faster than that.   

I can hear the leak coming from the passenger side where the timing cover assy meets the block.   It's a very small leak though.

This is my first Pontiac.   Very familiar with SBCs.

I'm thinking put some block seal in and see if that stops it up.

firebirdparts

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Re: water in oil
« Reply #1 on: September 22, 2013, 08:52:36 PM »
Welcome to TAC!  That does sound bad.  The way the timing cover goes on there, it is a big job to deal with any leaks there.  I am surprised you can hear that leak, though.
I want to be like Paul Kenny when I grow up
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1977 Y82 4-speed (red interior)
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1978 Redbird 305
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Chuckles

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Re: water in oil
« Reply #2 on: September 22, 2013, 10:08:07 PM »
Stop leak is a HORRIBLE solution. It only causes much larger problems. Don't Band-Aid it, fix the problem at hand. If not it'll cost you more in the future than it's worth.

79SE301M

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Re: water in oil
« Reply #3 on: September 25, 2013, 04:56:44 PM »
compression check results

1-120
3-30
5-110
7-120
2-170
4-140
6-90
8-140

putting oil in cylinder 3 does not increase compression

I'm going to tighten the head bolts between cylinders 3 and 5 and recheck.    I bet the head has lifted a bit and the steel shim gasket is still intact.

« Last Edit: September 25, 2013, 05:20:28 PM by 79SE301M »

Chuckles

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Re: water in oil
« Reply #4 on: September 25, 2013, 07:03:45 PM »
compression check results

1-120
3-30
5-110
7-120
2-170
4-140
6-90
8-140

putting oil in cylinder 3 does not increase compression

I'm going to tighten the head bolts between cylinders 3 and 5 and recheck.    I bet the head has lifted a bit and the steel shim gasket is still intact.



Sorry to be the bringer of bad news but, the rule of thumb is anymore than a 20% variance in cylinders is way out of spec. In the long run, I think you'll be pulling those heads.

Re: water in oil
« Reply #4 on: September 25, 2013, 07:03:45 PM »

79SE301M

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Re: water in oil
« Reply #5 on: September 30, 2013, 11:29:48 PM »
I believe the block is cracked at the bottom end of the cylinder between the water jacket and crankcase.    I can hear leakage when I insert a tube into the oil drain hole with 15 psi on a dry cooling system.  I can't hear anything if I insert the tube in the spark plug holes so I don't think its a head gasket or cracked cylinder.   Also the pressure does not build when I start it.

I'm going to try K&W block seal.


79SE301M

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Re: water in oil
« Reply #6 on: October 04, 2013, 02:09:49 PM »
Did the K&W block seal procedure.   The lifters never got quiet in 30-40 minutes of running.

Took the valve cover off and it's dry.   Unscrewed the filter.   No oil in filter.   unbelievable.

Pulled the dist.   Which I had to freeze to get out.   Oil pump rod is installed.  

I'll have to pull the pan to see if the pickup has fallen out.


« Last Edit: October 04, 2013, 02:13:52 PM by 79SE301M »

79SE301M

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Re: water in oil
« Reply #7 on: October 22, 2013, 07:37:32 PM »


Here's why I had no oil pressure.   How many more messed up things am I going to find?  

The water jacket is holding pressure now.   I'll get a new oil pump drive in with a steel sleeve over this area to prevent it from splitting out again.   

Hopefully the cam is not flat with the oil starvation condition.   Still don't know what condition the rod bearings are in.



« Last Edit: October 22, 2013, 07:40:43 PM by 79SE301M »

Re: water in oil
« Reply #7 on: October 22, 2013, 07:37:32 PM »
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