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Cooling System

Old 01-10-2019, 08:28 PM
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Originally Posted by Rmazda8 View Post
That's not my issue it overflows after driving for awhile , Thanks

Like others have said.... if you overfill the overflow bottle when it gets hot it expands and will spill out the extra. If you fill to the mark when cold it should be good. Another thing to watch for is a lot of fine bubbles in the overflow bottle especially when you rev it up a bit. That can mean you have a bad inside coolant seal that is leaking on the combustion side of the housing. Often at the start they don't leak coolant the other direction...so you won't get the white smoke when you start it...
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Old 01-10-2019, 08:36 PM
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Thanks will look into that, just a thought put pure antifreeze to top up before I drove it a good distance and it seems that it hasn't circulated because the overflow is pure as if it didn't mix with the older stuff although I did put quite a bit in.If the antifreeze is pure would that cause a problem I wonder.Its supposed to be 50/50 I believe.

Last edited by Rmazda8; 01-10-2019 at 10:51 PM.
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Old 01-11-2019, 12:25 AM
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Originally Posted by Rmazda8 View Post
Thanks will look into that, just a thought put pure antifreeze to top up before I drove it a good distance and it seems that it hasn't circulated because the overflow is pure as if it didn't mix with the older stuff although I did put quite a bit in.If the antifreeze is pure would that cause a problem I wonder.Its supposed to be 50/50 I believe.
The amount you put in the overflow won't matter.... either straight water or pure antifreeze would be fine in that amount. It will eventually mix in and homogenize. Hopefully you just overfilled it... that's the best case scenario. Leave it for a bit and see if it stays about the full level. If it drops more than that you have a bigger issue as overfill will puke out and stop when it gets to the correct level. Unless you have an issue. Could be as simple as a crappy radiator cap...
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Old 01-11-2019, 04:43 PM
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Originally Posted by NotAPreppie View Post
It's possible that it was overfilled. Coolant will expand as it heats. If it doesn't have enough space to expand, it'll get burped out the overflow tube.
Let the engine cool and fill the reservoir to the lowest mark.

It's also possible that you're overheating which will cause coolant to boil out the overflow tube.
Get an ELM327 OBD-II adapter and a smartphone app to look at your actual coolant temps (the dash gauge isn't reliable).

It's also also possible that you're getting combustion gasses pressurizing the coolant system causing coolant to burp out the overflow tube.
Get a $30 combustion leak detector (sometimes called a block tester). Follow its instructions.

You can also rent a coolant system tester from most auto parts stores.
I looked on amazon and there are many options is there one that is better than others and Im in Canada is there a store that sells this adapter does anyone know,, Thanks
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Old 01-12-2019, 09:13 AM
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Old 01-15-2019, 05:04 PM
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i drained the coolant from radiator and noticed that it sparkled could that be a sign of something or is that just he nature of he coolant .my thought is that it has oil in it..Was thinking that my next step should be to see if fans are spinning

Last edited by Rmazda8; 01-15-2019 at 05:06 PM.
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