CX5 Turbo water pump leak?

[cz5gt]

During recent oil change I found dry coolant spray in a rotation outward pattern around the water pump. Its all dry and no wet spots.

It seems it may be leaked some from the weep hole and due to the engine running the water belt rotating it splattered it in a perfect rotation pattern.

We did have some very high heat days past month.Car is less than 30k.
My other cx5 non turbo has sustained many high heat days, has 70k+ miles and never seen any spots like this whatsoever.

My experience in the past is once water pump starts to leak they leak and are wet almost all the time. This one puzzles me as there are no leaks now or no new spots. Mazda has TSB for water pump weep hole leaks but its all related to dry coolant on the pump itself not all around the engine.

Anyone seen anything like this?
Could it be high heat and pressure caused the weep hole seal to purge some?

Appreciate any insight. Thank you.

rear heater hoses near the pump

near/above right driveshaft (water pump
can be seen top right and its all dry. some spots on the belt too)

 

[N7turbo]

That is concerning. I will keep an eye on mine as temps increase here in Nebraska.

 

[cz5gt]

Indeed it is. I am now keeping an eye on it.

Will check with the dealer too but wanted to see if anyone has experiended anything like it.

 

[jadmt]

Are you sire its coolant?

 

[cz5gt]

You bring a very good point. I just assumed its coolant in that area.

I wonder what else could leave such marks...whatever it is..seems the rotating water pump pulley splashed it all around.

 

[N7turbo]

Is there anything else that color?

 

[cz5gt]

the only thing same color that I know of is AC refrigerant oil with UV dye
but the Ac compressor, lines and pressure valve are all clean and they are further away.

ps confirmed. its coolant spray.

 

[nickswhip24]

any chance its been there since new?
i usually look around engine bay for anything off...changed a battery in family members car over the weekend and found a peanut butter cookie sitting on the fender side of it...it looked new so i ate it
i guess i would clean up the stain and monitor that way?

 

[cz5gt]

Unfortunately it happened recently. I monitor every month at least the upper engine bay the hoses were pristine last time I checked.

Yea thats my plan for now. Wiped it off and thats how I found its coolant. If it re-appears its dealer visit as my car is still under warranty.

I did closer look at the water pump. It seems it squirted coolant from around the weep hole and the drops hit the rotating pulley which then sprayed it in a rotational pattern around. Based on the quantity it was more than one drop

Thank you all.

 

[nickswhip24]

ok,sounds like you figured it
i have the timing chain cover weep and it's right next to the water pump(oil)
still in warranty but from my reading it seems very common,i am told the bots at the factory don't put enough silicone down -i wonder if when putting the water pump on they move it just enough to break seal-i personally looked at 3 different mazda's and they all have it...same exact spot

 

[cz5gt]

Yes the timing chain cover leak/wet spots is notorious
Exact cause is unknown to me but a lot of skyactivs have that same thing.

my non turbo had a full leak even when new (few thousand miles). Fixed 2 times under warranty and still "wet" around. I decided not to bother as it seems hard for the dealer to fully fix it. At least doesnt leak. Have heard very few technicians can actually fully fix it.

The turbo doesnt have the leak but it has "wet" spots at the bottom corner where it touches the oil pan. Similar story. Not worth to touch it as the dealer can make it worse. Seems to me that wetness is more pronounced in hot climates.

there is also the "wet" belt tensioner.

 

[jadmt]

Yes the timing chain cover leak/wet spots is notorious
Exact cause is unknown to me but a lot of skyactivs have that same thing.

my non turbo had a full leak even when new (few thousand miles). Fixed 2 times under warranty and still "wet" around. I decided not to bother as it seems hard for the dealer to fully fix it. At least doesnt leak. Have heard very few technicians can actually fully fix it.

The turbo doesnt have the leak but it has "wet" spots at the bottom corner where it touches the oil pan. Similar story. Not worth to touch it as the dealer can make it worse. Seems to me that wetness is more pronounced in hot climates.

there is also the "wet" belt tensioner.

I am at about 47,000 miles on my 23 turbo and I noticed the other day there was some build up around the top of the belt tensioner but not terrible mostly just like belt dust that had been attracted to a very slight weep. I cleaned it all up which was simple to just wipe it off and the rubber seal did not appear to be wet or leaking..I will pay attention to it but definitely was not much. everything else is weep free. I changed the diff and transfer case oil the other day and really checked every nook and cranny out from above and below and was pretty amazed that it looked like new other than the small residue around the top of the tensioner.

looks like the only way to fix a timing chain cover leak would be a pain. pull the inner fender liner and tire.

 

[cz5gt]

same on mine. They revised the part so it just wets itself now rarely fully leaks