CIVIC - New Radiator + OverHeating :( - HELP!

Hey guys
basically just upgraded from my piece of cardboard radiator to a 3.5inch thick Aluminium Radiator... however now it is running hotter.
I do suspect air bubbles and i am idolings the car and it is still bubbleing a bit with the cap off.

I was told there was a bleed valve to solve this problems safely easily and quickly. My engine is a D15b7. And ANY help would be GREATLY appreciated maybe even some pictures?

If not can i just simply flush all the bubbles out by idolings the car with the cap off and topping it up with ever air escapes?

Regards Lyle

follow your top radiator hose, look for a 12mm nut with a hole on it,

also make sure your thermo fans are cutting in, you could have forgotten to plug them in.

yeh mate the fan is plugged in and i have been told about this nut but i am still unable to find it, however this was last night in the dark
so i wil explore it this arvo


how do i bleed the valve from this nut? do i just turn it untill i hear a hissing noise or something similar and do i know that all the air has bleeded once this stoppes?
Cheers Lyle Draper

Undo it till some coolant flows out then do it back up (don't over tighten or you will snap it).

See this thread for more info http://www.ozhonda.com/forum/showthr...hlight=coolant

i had this trouble with my 300zx. I just started it cold with the radiator cap off and filled it up till it was full. Takes a few minutes for it to all bubble down, but i never had a problem.... till my thermastat started leaking. stupid nissan :D

Bleed it properly. open the rad cap and loosen the bleed, start the car and let it warm up. keep pumping the radiator hoses and topping up the coolant. dont stop until the radiator fan comes on atleast twice.

otherwise, ur turbo right? smell the fluid in the overflow, has it got charcole particles through it? or does it smell off? COuld be headgasket.

Quote:

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Originally Posted by Weq

Bleed it properly. open the rad cap and loosen the bleed, start the car and let it warm up. keep pumping the radiator hoses and topping up the coolant. dont stop until the radiator fan comes on atleast twice.

otherwise, ur turbo right? smell the fluid in the overflow, has it got charcole particles through it? or does it smell off? COuld be headgasket.

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Yes correct i am turbo, it would not be head gasket, coolent is fine and the heat only ever started fluctuating when i put in the new radiator, no chascoal foreign matter either. I will do your method though tomorro. Also

should my standard fan + shroud be sufficient on my new radiator as it is 3.5 inch aluminium and my standard one (absolute joke) was the thickness of my finger

Get me to me on some insite

Cheers

what kind of civic are you driving?

yep, run with bleed valve open and have your heater on

Quote:

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Originally Posted by sivic

yep, run with bleed valve open and have your heater on

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Why would you run it with the bleed valve open?

to circulate the air to the top to bleed it out of the system.

also some 96 on Hondas dont have the bleed nut.

EG D15bT Civic

3.5" thick radiator? Why so thick? Even the Koyo racing radiators are only around 50mm from memory.

Hey Lyle you should've bought my old radiator you wouldnt have this problem lol

I had the same problem when I upgraded my radiator, it ended up running 12 degrees hotter and overheating, check your radiator cap as some times there not the best fit for aftermarket radiators, my seal was gone and that was my problem.
I was told if the pressure in the radiator isnt at the correct psi the lower the psi the hotter the car will run, so I bought a new radiator cap and all is good, car runs at 85 degrees max on a hot day...hope this helps.

Lyle I'll call you so we can go out cruising next thursday night.

yo mike,
man i would have loved to grabed your old radiator but it deffinately would not fit.... need space for the turbo yo... I got one exactly the same as the one you have now or very similar, same dimension as the stocko but just alu and thicker! but yeh i got the bubbles out and yeh its still running a little warmer then standard, but also i am running my standard shroud and fan and you got thermos yeh 2 of them? soo there could be a few things i could do. But yeh when we hook up next give me some pointers and hopefully its just somethin small. Give us a call a sap. Cheers bro

Besides i gotta have the chance to hand you ass too you... ;)

haha I'll give you a head start...Oh and I'm only running the factory fan atm I havnt installed my other fans yet, they'll go in once the other engine is droped in, also my fan kicks in at a lower temp than usual factory setting that helps alot.

how do you get it kickn in at a lower temp? easy to DIY or is it envolv ****ing around alot?, also bro my best mate ash with 17son comes back this week worked to all hell.... you will like, we should all hook up and go for a boosted civic cruise

You can buy an after market thermostat that opens up at a lower temperature than a factory unit allowing the coolant to flow through your engine sooner reducing coolant temperature.
I just had a switch installed so that I can turn the fan on when ever I like, theres a little f@#king around but worth it.
Boosted Civic cruise sounds sweet.

u shouldnt overheat on stock internals, doesnt matter about boost. Check your radiator cap, make sure its good. Otherwise get your waterpump checked out or its your headgasket. its pretty simple really. eliminate each component one by one.

Hell yeh bro sounds like the go, will speak to you tomozza or somethin
and that switch idea sounds good i may install one myself, CHeers for the insite mate

Quote:

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Originally Posted by SHWCARCIVIC

You can buy an after market thermostat that opens up at a lower temperature than a factory unit allowing the coolant to flow through your engine sooner reducing coolant temperature.
I just had a switch installed so that I can turn the fan on when ever I like, theres a little f@#king around but worth it.
Boosted Civic cruise sounds sweet.

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Where do i purchase a low temp thermo stat? are they easy to install? how much aproximatley? would anyone recommending to new fans as i have the stoko one on at the moment

hey when i open the radiator cap and start the car.. after a while, the coolant starts spilling out of (before the radiator fan turns on).. should i just let the coolant pumping out??? or it's not normal?

yep its normal. it will rise and then fall soon after whent he thermostat opens (if its not bleed).

Quote:

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Originally Posted by Jazzle

hey when i open the radiator cap and start the car.. after a while, the coolant starts spilling out of (before the radiator fan turns on).. should i just let the coolant pumping out??? or it's not normal?

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Just turn the cap halfway

turn the cap halfway.. still spill!! :'(

yeah it will still overflow a bit that is normal. Just wash it off with fresh water once you're done.

oh nooooooooo... what happen is... i thought it wasn't normal .. so i just closed the cap instead of closing it half way.... and after the radiator fan came on 3 times.. i waited for the coolant to cool down.. open the cap and fill in more coolant etc etc...

so i guess i didn't bleed the coolant at all.. and what can i do now??

Just follow the instructions here Jazzle:

http://www.ozhonda.com/forum/showthr...hlight=coolant

noooo. i have read that a million times... my question is... now i have topped up the radiator and reservoir tank.. can i still bleed the air out?? or i have to change again? =(

sorry for asking so many questions but please help guys..

Yes you can. Just open up the bleed nipple till water flows out. Then to make sure take the radiator cap off, fill it up, then put it back on and turn it halfway till it clicks (so its not fully closed).

Then start her up.......run it till the radiator fan comes on twice then top up the overflow bottle and ur set!

someone should go to his place and show him how to do this.
+ slab of beer :D