Engine Help diagnose random overheating??

TomOsiris

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May 19, 2019
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Well, thanks for all the help guys!
But..
I think I know what's causing it this time..
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nickyb

WAIT,you now have a pair?
10 Year Member
Apr 3, 2009
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I remember someone saying to have your mechanic check the head gaskets.I
post #1 and 2
 

TomOsiris

Member
May 19, 2019
68
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31
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I remember someone saying to have your mechanic check the head gaskets.I
post #1 and 2
there was no way to do a compression test with the spark plugs seized into the heads.. well they have to come off now anyways
"...220+ is overheating not 205 or 210..."
+, +...
(posr #67 - thought he said no H2O/milk on dipstick, no white smoke)?
yea, no milk, no white smoke, and coolant system pressure test held up fine
 

nickyb

WAIT,you now have a pair?
10 Year Member
Apr 3, 2009
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Like I said in post #2, have you mech. do a compression leak test with dye to see if a head gasket is bad.
Look up Scotty Kilmores video on how it done.
 

Cheapskate207

The left one hangs a little lower
Jan 12, 2020
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There is a test to confirm combustion gas (exhaust) in the coolant. You can rent it at autozone too. It’s called a “block tester”.
 

Cheapskate207

The left one hangs a little lower
Jan 12, 2020
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Sorry, was thrown off by the container. I thought it was just a cup of weird looking coolant not the blue liquid from the block test. I feel your pain:
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TomOsiris

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May 19, 2019
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Could of saved two weeks, just saying dude.
Man, what are you on about? Seems like you've been skipping around and not reading the posts.
It was just confirmed blown 2 nights ago when it started overheating at idle and I retested with block fluid which promptly turned yellow.
Before that we had done the block test which stayed blue, and a coolant pressure test, which it also passed.
75 posts, 4 pages. I'd tend to agree but we all try'n avoid the worse/inevitable, no?
Read above as well, the car passed the block fluid test and coolant pressure test before developing more symptoms 2 days ago.
I suspect the head gasket was failing slightly before completely blowing as it is now.
The original symptom was a closed tstat due to an air pocket, which could have either been from compression leaking into to the coolant, or just an improper fill/bleed on the coolant system.

One thing is for sure, its 100% blown now
 

TomOsiris

Member
May 19, 2019
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So, in case anyone thought I was exaggerating the spark plugs being seized in the heads..
This is what happened when I tried to take one out last night, after soaking in PB blaster.
First, the entire back half of the plug snapped clean off (Yes I was using the correct spark plug socket with rubber insert)
Then when I put the wrench on what was remaining of the plug, the hex nut part of the plug literally sheared off and left the barrel threaded into the head.
Luckily I was able to get enough of a bite on it with an EZ-OUT socket, but what a nightmare.
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