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leaky radiator

 
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Old 07-20-2008, 11:20 PM
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leaky radiator

i changed my oil today to 10w30 instead of 5w30 cause its hot as hell in sac and someone told me it would help it to stop leaking. went to start it up and it was idling higher then usual and after a few seconds it would rev up and down repeatedly by itself. went to park it and when I opened the hood I noticed the radiator was leaking a little near the top.

what's wrong with my car and what can i do to fix it, please and thanks

btw 94 si, 200k, bone stock
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Old 07-21-2008, 02:03 AM
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Radiator patch or if the leak is not bad then use one of those additives in the water that liquid stops minor leaks in your radiator. Its easy to find.

I don't think oil change has anything to do with the radiator. 2 different things.
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Old 07-21-2008, 03:42 AM
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If it just a lil bit then some Bar's stop leak works great



If it's bad then try the heavy duty stuff
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Old 07-21-2008, 05:20 AM
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All of the above options are simply band-aids.

The best thing to do would be to not be a cheap ass, spend 120 bucks and replace it.

It'll take all of 45 minutes of your time.
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Old 07-21-2008, 09:51 AM
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^ spend closer to $375 and get a koyo 2 row aluminum rad... I love the heck outta mine.

edit: d@mn that 300z is pretty... quit giving me these inappropriate thoughts about nissans.

Your idle... my h22 did that bouncing deal when I first got the swap.. it got better as we got rid of some carbon deposit, but it didn't get fixed entirely until I got a chipped p28 eCtuned on the dyno.

good luck!
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Old 07-21-2008, 02:49 PM
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That idle could be caused by IACV valves or readjust it from the manifold, it might work.
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Old 07-21-2008, 03:59 PM
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Since he has a leak in the radiator the up and down idle could be caused by simply a bubble in the coolant line....
Don't worry about your idke get your leak fixed and flush the system..... After that see if the irratic idle goes away....
Just keep in mind that yes other things cause irratic idle but the two things( yiur leak and idle) started at the same time...
Hmmmmm you think to yourself... Common sense dictates its an air bubble caused by the leak...
Start there and move on....
Just my 2 cents
EDIT- irratic idle caused by over heating is also very likley...
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Old 07-21-2008, 04:17 PM
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is it just the cap???
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Old 07-21-2008, 05:05 PM
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Quote:
Originally Posted by poohbear View Post
Since he has a leak in the radiator the up and down idle could be caused by simply a bubble in the coolant line....
Don't worry about your idke get your leak fixed and flush the system..... After that see if the irratic idle goes away....
Just keep in mind that yes other things cause irratic idle but the two things( yiur leak and idle) started at the same time...
Hmmmmm you think to yourself... Common sense dictates its an air bubble caused by the leak...
Start there and move on....
Just my 2 cents
EDIT- irratic idle caused by over heating is also very likley...
That sounds like a good order of operations. I second it.
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Old 07-21-2008, 05:13 PM
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Quote:
Originally Posted by 94ludeguy View Post
is it just the cap???
no its out of the radiator
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Old 07-21-2008, 05:15 PM
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Quote:
Originally Posted by Optima View Post
All of the above options are simply band-aids.

The best thing to do would be to not be a cheap ass, spend 120 bucks and replace it.

It'll take all of 45 minutes of your time.
surprised to see another 3zc member on here, i thought I was the only one
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Old 07-21-2008, 07:21 PM
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If you value your engine, don't ever use that crap.
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Old 07-21-2008, 10:53 PM
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Yeah i second everyone who said do not use that pour in crap.... there is no such thing as a quick fix in a bottle... Unless its a blue diamond pill..... ANYWAY..... your best bet to save money if you need and your leak isnt the grand canyon is to braze the leak.... braze the leak and reinstall your old radiator... Thats a more permanent fix, its also alot cheaper then a new radiator.
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