Coolant Leak - Where's this location?
#1
Registered Member
Thread Starter
Coolant Leak - Where's this location?
Hi,
Can ya tell me where the leak is coming from?
Location is toward middle of car so back of engine. Coolant Reservoir level comes down from Max level a bit. It is a slow leak.
1st circle has a plastic piece which was removed. Thanks in advance
Can ya tell me where the leak is coming from?
Location is toward middle of car so back of engine. Coolant Reservoir level comes down from Max level a bit. It is a slow leak.
1st circle has a plastic piece which was removed. Thanks in advance
#5
There is a plastic coupler that joins the heater hoses near the back of the engine (right side passenger) right at the firewall. Bet the coupler has split, and it's leaking at the joint....
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tite_tite (01-02-2017)
#6
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I have dealt with multiple scenarios of coolant leaks on my G. So I have quite a bit of experience on this topic.
That looks like a leak from either the back of the engine, or the heater hose coupler like others have mentioned. If you found coolant on the floor, and it's more toward the passenger side, it's the heater hose coupler. If it's more on the driver side, it's from the back of the engine.
Here's a pic, see that hose right next to the coolant temperature sensor? That's where mine was leaking from. Good luck!
That looks like a leak from either the back of the engine, or the heater hose coupler like others have mentioned. If you found coolant on the floor, and it's more toward the passenger side, it's the heater hose coupler. If it's more on the driver side, it's from the back of the engine.
Here's a pic, see that hose right next to the coolant temperature sensor? That's where mine was leaking from. Good luck!
Last edited by antirice; 01-02-2017 at 07:22 PM.
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krazyfiend (11-24-2019)
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#8
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Royce D. Ccr (07-24-2020)
#10
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Thread Starter
Cool. Thnx
Did you replace it yourself or you took to the shop?? Any advice on how to change hose?? Eg.. Drain coolant, remove certain part for easier access, etc.
Thnx again
Did you replace it yourself or you took to the shop?? Any advice on how to change hose?? Eg.. Drain coolant, remove certain part for easier access, etc.
Thnx again
#11
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I fixed it myself. I did it the lazy way, but I think it's sufficient since it's not a big leak. I simply put an additional worm clamp, right underneath the stock clamp. There's enough space for an additional clamp. No need to move the stock clamp up to generate space. That did the trick for me. No more coolant dripping on the garage floor. I check my fluid level once a week, so far so good.
#12
Registered Member
Thread Starter
I was able to open the cover & try to see where the leak is coming from. It appears it is leaking from a hose underneath the right(driver side) air intake thingy.
Question:
1. Do anyone know the name of the hose and/or part number? Pic 1 (1 end) Pic 3 ( other end). Pic 2 is close up of Pic 1, Pic 4 is close up of Pic 3
2. Pic 5 - I see some coolant (left over leak) in the back area. Is there another hose there or is it residual from the hose leak from Pics. I checked the back hose & there is no leak or wet spot from hose going into firewall of the car. Guess, i need to understand the diagram of how the coolant flows for the G37.
Hopefully this is the culprit because i hate to look for/change hose from the back of engine (Pic 5). Any recommendation/advice on replacing the leak hose.. eg: coolant flush, turn off bleeder somewhere to stop fluid flowing, etc. I will probably burp the system after leak hose change.
Thanks again for all input & continuous input.
Question:
1. Do anyone know the name of the hose and/or part number? Pic 1 (1 end) Pic 3 ( other end). Pic 2 is close up of Pic 1, Pic 4 is close up of Pic 3
2. Pic 5 - I see some coolant (left over leak) in the back area. Is there another hose there or is it residual from the hose leak from Pics. I checked the back hose & there is no leak or wet spot from hose going into firewall of the car. Guess, i need to understand the diagram of how the coolant flows for the G37.
Hopefully this is the culprit because i hate to look for/change hose from the back of engine (Pic 5). Any recommendation/advice on replacing the leak hose.. eg: coolant flush, turn off bleeder somewhere to stop fluid flowing, etc. I will probably burp the system after leak hose change.
Thanks again for all input & continuous input.
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Anthony P (10-06-2020)
#15
if you are replacing the heater bypass hose it would mean losing quite a significant amount of coolant especially coming out of the heater core. you would definetely need to bleed it if you don't want excess air in the cooling sys causing idling issues or the noise of coolant sloshing around coming from your dash as you make left and right turns.