4th gen mysterious coolant splatter

[jdmsneakerz]

2005 2WD V6 4.0 220k miles

Symptoms:
I have this mysterious coolant splashing around the front of the engine. Around the intake arm, fuse box, pulley, oil filter & etc.. there is no leak drip i see on the ground. I some sort of build up around the behind the theromostat and below. The reservoir goes a bit lower every couple days. There is a squealing. I did change my serpentine belt about 5 months ago. But the noise has returned. No check engine light.

Curious if it could be a head gasket?

What happen:
My sister borrowed my truck to go to SoCal. Before she left i checked over the fluids and topped the radiator off and burped it.
She next day, on my way to a fishing trip (two weeks ago) i noticed my temp rising but not all the way to the red zone. I exited into a Valvoline and they inspected my radiator tank was near empty. They happily filled it up for free for me to get back home (canceled my trip). From then, the temp hasnt rised.

I normally do my own repairs unless its internal, but i've been working so 7 nights a weekly for the last few months and i dont have much thoughts on figuring it out. I've already ordered Aisin waterpump & OEM thermostat incase thats the issue.

Possibly anybody could help on any troubleshoot/solutions/suggestions?
Thanks...

 

[jdmsneakerz]

Also last night when i drove it, i had the heater on full blast and could smell the sweet coolant smell. After parked, i still didnt spot any drip on the ground.

 

[4RunnerMexico]

Water Pump Gasket?

My best guess would be the water pump gasket. The water pump housing runs to the left and right of where to fan attaches. The coolant built up on that pulley seems to be right in front of where the housing runs. Its either the gasket on the water pump is leaking or the water pump it self is leaking.
If your on the original one, id go ahead and replace it anyway

 

[jdmsneakerz]

My best guess would be the water pump gasket. The water pump housing runs to the left and right of where to fan attaches. The coolant built up on that pulley seems to be right in front of where the housing runs. Its either the gasket on the water pump is leaking or the water pump it self is leaking.
If your on the original one, id go ahead and replace it anyway

With the squealing and the leaking i also thought it could be on what you said. I previously looked deep to look for the "toyota" stamp and seems the be the original.

Thanks for your input.