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Two Blown Head Gaskets?

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Old Nov 24, 2008 | 12:29 PM
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From: Floyd VA
Default Two Blown Head Gaskets?

I have an 87 convertible with 152,000 miles. Never had any engine problems until now. Taking the car out this past weekend, one mile from home coolant temperature started increasing. I turned around and headed back home, then white smoke out the exhaust, which cleared up by the time I returned home, Temp had risen to 250. I immediately suspected head gasket. Removed #5 plug, soaked with coolant. Removed #7, same, 1 & 3 were dry. Removed 2,4,6 & 8. 2 & 4 were dry, 6 & 8 soaked with coolant. Also, before shutting engine off, steam coming from behind left exhaust manifold. At first I knew it must be head gaskets. Is it possible to blow two head gaskets at one time? What about the Oil cooler or intake manifold? Any suggestions would be greatly appreciated?
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Old Nov 24, 2008 | 02:08 PM
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Originally Posted by mb87
Is it possible to blow two head gaskets at one time? What about the Oil cooler or intake manifold? Any suggestions would be greatly appreciated?
While it's certainly possible....it's waaayyy up on there on the not likely scale. A compression test will answer the question.

I would be looking at the intake manifold.
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Old Nov 24, 2008 | 03:24 PM
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you have to pull the heads no matter what.
send the oil out to blackstone to see if there is coolant in the oil.
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Old Nov 24, 2008 | 03:47 PM
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Thanks. Could I have caused further damage with the temp at 250?
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Old Nov 24, 2008 | 05:17 PM
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If you oil looks like chocolate milk, then headgasket.
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Old Nov 26, 2008 | 12:19 AM
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How LONG was it at 250?

My experience is that aluminum heads and high heat dont mix well.
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Old Nov 26, 2008 | 01:49 AM
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Any suggestions would be greatly appreciated?
I too suggest a compression check; if you need one head gasket just do both, after checking the heads for warpage.
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Old Nov 26, 2008 | 01:01 PM
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It was at 250 probably less than 5 minutes. At this point I'm planning to remove both heads, have a machine shop check them and then rebuild them.
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Old Nov 26, 2008 | 02:18 PM
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Well, do the compression check first.

That way you will know you are on the right path. It doesnt take that long and you will know that you are actually fixing the right thing.

You would hate to do all that and then find out later that it wasnt really the problem, even though I suspect it is.
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Old Nov 26, 2008 | 03:16 PM
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to do the headgasket, you've got to pull the intake manifold anyways, so why don't you just pull that and go from there. if the intake manifold gasket is bad, then that was probably it, if not, keep digging.
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Old Nov 26, 2008 | 05:31 PM
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While you're at it, you might as well rebuild the front suspension and change the radiator, because, well, that's what always happens to me.
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