air relief trick for radiator ? - Nissan Forum
B14 95-99 chassis 1995-1999 Sentra and 1995-1998 200SX

 
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#1 Old Aug 13th, 2005, 03:22 PM
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air relief trick for radiator ?

I know, once I was reading on here....that your able to stick a piece of metal in the radiator cap to prop it in the open position and rev the engine 2-3 times to purge any air in the radiator.

I did a search to find the the exact steps....but either I have crappy search skills, or i'm just making this crap up.

Anyone know what im talking about ?
What's a good piece found around most houses to use to prop the radiator cap in the open positon ?

Thanx guys....and yes, im just this stupid today.

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#2 Old Aug 13th, 2005, 03:51 PM
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Quote:
Originally Posted by thestunts200sx
I know, once I was reading on here....that your able to stick a piece of metal in the radiator cap to prop it in the open position and rev the engine 2-3 times to purge any air in the radiator.

I did a search to find the the exact steps....but either I have crappy search skills, or i'm just making this crap up.

Anyone know what im talking about ?
What's a good piece found around most houses to use to prop the radiator cap in the open positon ?

Thanx guys....and yes, im just this stupid today.
I posted this. I used a large packing staple from a box. I bent it into shape and trimmed it. You then install the cap, warm up to temp. and rev the motor 3 times over 3 grand. Turn off, top off radiator, and repeat. This is to be used in conjunction with proper filling technique and always make sure the heater switch is set all the way to hot.

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#3 Old Aug 13th, 2005, 03:57 PM
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Quote:
Originally Posted by wes
I posted this. I used a large packing staple from a box. I bent it into shape and trimmed it. You then install the cap, warm up to temp. and rev the motor 3 times over 3 grand. Turn off, top off radiator, and repeat. This is to be used in conjunction with proper filling technique and always make sure the heater switch is set all the way to hot.
you can also loosen a heater hose to get air out. do you guys have an air bleed screw like the ka's do?
#4 Old Aug 13th, 2005, 04:28 PM
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Thanx wes, much appreciated.
Definately writing this down on my tip& tricks notepad....this time, i wont loose it.

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#5 Old Aug 14th, 2005, 10:04 AM
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there is a bleeder screw, but then again, the radiator cap is higher.

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#6 Old Aug 15th, 2005, 08:52 PM
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Well, I could find anything to prop the cap in the open position, and since I have 2 radiator caps...I did this instead.

Will this work ok ???
All I did was remove everything in the cap, except the cap, and the thing that stuck out, I just smashed down with a hammer.



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#7 Old Aug 15th, 2005, 09:38 PM
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Quote:
Originally Posted by thestunts200sx
Well, I could find anything to prop the cap in the open position, and since I have 2 radiator caps...I did this instead.

Will this work ok ???
All I did was remove everything in the cap, except the cap, and the thing that stuck out, I just smashed down with a hammer.
It should as it will allow air to enter and escape the system. FWIW the "trick" I posted is in the FSM...

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#8 Old Aug 15th, 2005, 09:48 PM
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I have a funnel that I can wedge into the filler hole, once the radiator is filled up, I start the car and keep the funnel from running dry, air bubbles up, I rev the engine and squeeze the pipes until no more air bubbles up.

never had a problem.
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#9 Old Aug 15th, 2005, 09:57 PM
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Quote:
Originally Posted by Ninety-Nine SE-L
I have a funnel that I can wedge into the filler hole, once the radiator is filled up, I start the car and keep the funnel from running dry, air bubbles up, I rev the engine and squeeze the pipes until no more air bubbles up.

never had a problem.
That is the method posted in the later FSM's.

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#10 Old Aug 15th, 2005, 10:01 PM
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Quote:
Originally Posted by wes
That is the method posted in the later FSM's.
Hmmm, didn't know that, I jus started doing it that way. I think it's a lot better than sticking things in the radiator, but iono.
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#11 Old Aug 15th, 2005, 10:13 PM
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Quote:
Originally Posted by Ninety-Nine SE-L
Hmmm, didn't know that, I jus started doing it that way. I think it's a lot better than sticking things in the radiator, but iono.
Actually I prefer the cap (if you knew how it was done you wouldn't think twice) as it keeps the water pump from spitting out coolant on startup!

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#12 Old Aug 16th, 2005, 01:41 AM
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Cool.....and also, you mentioned having the heater switch all the way over , should fans be on, or just the knob turned all the way right ??

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#13 Old Aug 16th, 2005, 08:36 AM
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Quote:
Originally Posted by thestunts200sx
Cool.....and also, you mentioned having the heater switch all the way over , should fans be on, or just the knob turned all the way right ??
Just turned all the way to hot to open the core. Anyway do NOT let your car run too long with the cap without watching the gauge. It WILL overhet after a while as there is no pressure in the radiator system, so let it get to operating temp, rev it a couple times, and shut it off.

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