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No air relief plug on heater hose - can't bleed cooling system

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Old Oct 17, 2012 | 04:53 PM
  #16  
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Damn nissan cheaping out again!!

Browsing amazon, came across this.

Lisle 24610 Spill-Free Funnel : Amazon.com : Automotive Lisle 24610 Spill-Free Funnel : Amazon.com : Automotive

Not entirely as good as bleeder screws, but still accomplishes mostly the same thing eventually. Probably just need to let the engine heat cycle several times.

@bythabay, That whole area on both the DS & PS is rather tight to work in. I suppose if there is a coupler with a bleeder could be installed. Also, the fsm (2010 sedan) on page MA-13, second picture down shows a bleeder screw of some sort on the radiator itself. It's immediately to the right (facing the engine) of the reservoir tank. Driver side air cleaner housing needs to come off to access it though. I can't confirm/deny its presence on the 2012 as the air cleaner housing is obstructing the view.

I just did hoses/tstat and cap on dad's grand prix, and even though it has a bleeder screw, I swear there's still some air present. I can hear it swishing around after start up when making turns. Might order that lisle device to see if I can burp it any better.
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Old Oct 17, 2012 | 04:57 PM
  #17  
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Originally Posted by Jsolo
Damn nissan cheaping out again!!

Browsing amazon, came across this.

Lisle 24610 Spill-Free Funnel : Amazon.com : Automotive

Not entirely as good as bleeder screws, but still accomplishes mostly the same thing eventually. Probably just need to let the engine heat cycle several times.

@bythabay, That whole area on both the DS & PS is rather tight to work in. I suppose if there is a coupler with a bleeder could be installed. Also, the fsm (2010 sedan) on page MA-13, second picture down shows a bleeder screw of some sort on the radiator itself. It's immediately to the right (facing the engine) of the reservoir tank. Driver side air cleaner housing needs to come off to access it though. I can't confirm/deny its presence on the 2012 as the air cleaner housing is obstructing the view.

I just did hoses/tstat and cap on dad's grand prix, and even though it has a bleeder screw, I swear there's still some air present. I can hear it swishing around after start up when making turns. Might order that lisle device to see if I can burp it any better.
If you read the FSM procedure for our G37, you will see that you have to open BOTH bleeder screws. The one on the radiator that you are mentioning AND the one on the heater hose. All G37 and 370z models have the screw on the radiator, just some have the heater hose bleeder too (intermittently).

Regarding the spill free funnel, I cannot comment on using it during cooling system refilling, as I have only used it to fill the cooling system. I follow the FSM procedure for air bleeding.
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Old Oct 17, 2012 | 05:32 PM
  #18  
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Right, but by having the funnel in place while the car is running, you get no overflow as the level rises/falls. Fluid can easily rise/fall as needed while engine is warming up/tstat opens, etc.

In the old days, cars didn't come with bleeder screws, yet folks still managed to get all the air out.
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Old May 3, 2013 | 12:23 AM
  #19  
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well I have '08 too, but i could locate where they r exactly, can u please take photos of the specific area?
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Old May 3, 2013 | 01:28 AM
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Originally Posted by NinG37s
well I have '08 too, but i could locate where they r exactly, can u please take photos of the specific area?
I used the spill free funnel to bleed a g37 without an air relief plug on the heater hose, worked like a charm.
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Old Oct 14, 2013 | 09:42 PM
  #21  
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I would like to bump this up please because I want to change my coolant also. It's 2008 G35 Auto

I can't seem to locate the damn relief plug... Please help! Can someone please highlight the valve???




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Old Oct 14, 2013 | 09:48 PM
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I just posted a diy video for this. Check the diy forum.
Originally Posted by HoldmyMouse
I would like to bump this up please because I want to change my coolant also. It's 2008 G35 Auto

I can't seem to locate the damn relief plug... Please help! Can someone please highlight the valve???









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Old Oct 16, 2013 | 02:15 AM
  #23  
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It's supposed to be on the driver's side heater hose but it seems you don't have it, which is weird since I have a 2008 G35 sedan 5AT and have got the relief valve.
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Old Oct 16, 2013 | 02:21 AM
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Originally Posted by Q8y_drifter
It's supposed to be on the driver's side heater hose but it seems you don't have it, which is weird since I have a 2008 G35 sedan 5AT and have got the relief valve.
Yeah, that's why I started this thread originally

In the case where the air relief plug is not there, you MUST use a spill free funnel. If you have the plug, you can avoid using the funnel, but it's still good to try to use it to purge excess air.
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Old May 27, 2017 | 09:06 PM
  #25  
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if u have one ur just supposed to unscrew it and when u fill with coolant the excess is supposed to spew out of it. thats how it "bleeds" the system. if u have air it supposed to come out of the same hole. mine didnt have one the heater hose one jus used the bleeder screw near the radiator
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Old Jun 22, 2017 | 03:20 AM
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Originally Posted by inf4mOus
Is this the Air relief Valve on my G35 2008 6MT



Or is it the black cap towards the bottom of the picture that says "H" on it?
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Old Jun 22, 2017 | 09:29 AM
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^^^

NO, the correct location of the bleeder valve is the part circled in red. But to answer inf4mOus, you don't even need to bleed from that location, its relatively, redundant it was eliminated on the newer models......just "burp the radiator" with a radiator funnel... there is also an overflow valve at the top drivers side of the radiator accessible if you remove the driver's side airbox if you really want to bleed it through a valve.
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Old Jun 22, 2017 | 02:10 PM
  #28  
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Originally Posted by Hashim
^^^

NO, the correct location of the bleeder valve is the part circled in red. But to answer inf4mOus, you don't even need to bleed from that location, its relatively, redundant it was eliminated on the newer models......just "burp the radiator" with a radiator funnel... there is also an overflow valve at the top drivers side of the radiator accessible if you remove the driver's side airbox if you really want to bleed it through a valve.
This x2, just get a Lisle funnel kit, easy-cheesy!
Bottom-line pricing on Lisle - 24680 at ToolTopia.com
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Old Aug 13, 2019 | 11:10 PM
  #29  
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Originally Posted by Baadnewsburr
^^^

NO, the correct location of the bleeder valve is the part circled in red. But to answer inf4mOus, you don't even need to bleed from that location, its relatively, redundant it was eliminated on the newer models......just "burp the radiator" with a radiator funnel... there is also an overflow valve at the top drivers side of the radiator accessible if you remove the driver's side airbox if you really want to bleed it through a valve.
Do you just burp the radiator through the over flow? I've always done it through the radiator cap. And I'm pretty sure 2008 g35 doesnt have one unless I'm just blind.
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Old Aug 13, 2019 | 11:36 PM
  #30  
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^^Look up lisle funnel on youtube. You'll see how it's done.
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