Potential Coolant Seal Problem
#1
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Potential Coolant Seal Problem
Okay. I've done a bunch of searches and taken a lot of notes, but I can't find exactly what I'm looking for.
I have the weird "add coolant" light issue. The coolant level isn't low, so I figure there's a bit of air in the system, which I'll bleed out. What worries me, though, is the fact that the air might have come from a coolant seal beginning to fail.
The coolant also looks a bit dirty. Is that normal for old coolant? I'm going to flush the whole thing anyway... but what exactly does oil look like in coolant? is it always milky? I had a compression test done at Mazda, and it showed 8 - 8.5 across the board. Could there be a small leak? If there's such a small leak, would the coolant seal test I found in the FAQ show anything at all, or would only a huge seal failure make the coolant erupt?
I have the weird "add coolant" light issue. The coolant level isn't low, so I figure there's a bit of air in the system, which I'll bleed out. What worries me, though, is the fact that the air might have come from a coolant seal beginning to fail.
The coolant also looks a bit dirty. Is that normal for old coolant? I'm going to flush the whole thing anyway... but what exactly does oil look like in coolant? is it always milky? I had a compression test done at Mazda, and it showed 8 - 8.5 across the board. Could there be a small leak? If there's such a small leak, would the coolant seal test I found in the FAQ show anything at all, or would only a huge seal failure make the coolant erupt?
#2
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Sometimes the leaks are so small that you practically have to tear down the engine to find them. Mazdatrix has a little writeup about such occurances.
For now, let's pretend you don't have an internal leak. Is your water pump seeping at all? Do you have to add measured amounts of water priodically? How is the overflow tank's level changing, if at all?
For now, let's pretend you don't have an internal leak. Is your water pump seeping at all? Do you have to add measured amounts of water priodically? How is the overflow tank's level changing, if at all?
#5
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Originally Posted by WAYNE88N/A
For now, let's pretend you don't have an internal leak. Is your water pump seeping at all? Do you have to add measured amounts of water priodically? How is the overflow tank's level changing, if at all?
#6
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So the cap neck leak could in theory account for all of your problems?
You can test your own coolant- you said you were going to change it anyway, just save as much as you can when it's drained, then look for any oil slicks on the top of the coolant, and any solid debris that may settle to the bottom...
You can test your own coolant- you said you were going to change it anyway, just save as much as you can when it's drained, then look for any oil slicks on the top of the coolant, and any solid debris that may settle to the bottom...
#7
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Originally Posted by Karack
that depends if the light is on constantly or only after the engine warms.
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#8
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Just in case Rat's right, visually follow the single wire from the sensor as far down towards the harness on the rail as you can. See any damage on the wire?
#9
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Originally Posted by WAYNE88N/A
Just in case Rat's right, visually follow the single wire from the sensor as far down towards the harness on the rail as you can. See any damage on the wire?
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tiger18
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09-03-15 08:27 PM