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Location:
Brisbane
Registered:
July 2004
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uh oh!! Urgent advice please....
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Wed, 19 January 2005 09:03
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I'm a little freaked out right now.
I just went to check the water in my car, having just did a head gasket repair (details in the previous thread) but upon opening the radiator cap i noticed a fine oily layer in the water (not running coolant as yet) and a foamy white substance covering the cap itself.
There is no evidence of water contamination in the oil. (either via dipstick or under the filler cap).
I am hoping this is just excess WD40 that i used to coat the block and help reinstall hoses, eg: it seeped down into the water jackets when the head was off.
I flushed the block before reconnecting the radiator, and the radiator was professionally cleaned and pressure checked before reinsallation.
The car has been driven on the road about 7km, and probably idled for a total of 30 minutes since I got it going.I started the car with the cap off and it didn't shoot coolant like it used to.
Has anyone noticed similar findings after doing a head gasket?? Should i be worried, cos i am !!  .
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Location:
cambo
Registered:
May 2002
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Re: uh oh!! Urgent advice please....
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Wed, 19 January 2005 09:39
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i wouldnt worry at this stage, as it may be reidual even tho you say youve cleaned it out. im confused as to why you would run it without coolant? its not expensive. the furthest ive driven without coolant was from my work to home where i had toyota genuine.
so what i would do it just get a bottle of radiator flush and run that for 10 mins before you put the actual coolant in, but i wouldnt be overly worried.
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Location:
Brisbane
Registered:
July 2004
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Re: uh oh!! Urgent advice please....
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Wed, 19 January 2005 09:49
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I had heard that running coolant can hinder the gasket from 'beading' in properly, thats all. I wanted to do everything i could to give the gasket the best chance of survival so i don't have to do it again for a little while.
I was going to flush and refill with coolant at 1000kms when i retorqued the head.
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Location:
townsville NQLD
Registered:
February 2004
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Re: uh oh!! Urgent advice please....
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Wed, 19 January 2005 09:51
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just wonderin, have u cleaned the cap since it was foamed up. might just be the stuff that was there from when it was fucked head gasket
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Location:
cambo
Registered:
May 2002
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Re: uh oh!! Urgent advice please....
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Wed, 19 January 2005 09:51
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who have you spoke to about this? how old were they? 60-plus? i havent heard of doing this before but maybe i just havent been in the game long enough hehe. and also with most modern head gaskets retensioning isnt required. but it wouldnt hurt i supose.
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Location:
Brisbane
Registered:
July 2004
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Re: uh oh!! Urgent advice please....
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Wed, 19 January 2005 09:57
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Cap was cleaned before reinsallation.
A couple of mechanics mentioned it to me, (and yes they were old coots) plus read it on the net (so it MUST be true  ).. its a 7M-GE, i was looking for anything to help the problem, that includes the retorque aswell.
So i shouldn't be worried?
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Membership Secretary
Location:
Sydney
Registered:
June 2002
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Re: uh oh!! Urgent advice please....
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Wed, 19 January 2005 10:05
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Dump and clean and see if it does it again It may of just been residue.
Yeah I would retorque the head, mine lost a little of its tension
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Location:
Brisbane
Registered:
July 2004
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Re: uh oh!! Urgent advice please....
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Wed, 19 January 2005 10:25
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Yeah.. It'd be strange for it to leak oil and not compression, especially on a gasket less than 7kms old (with a machined head surface too).
TheStitt Did you initial retorque to 72ft/lbs? How did you retorque - back each bolt off and retighten or just tighten without backing them off first??
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: uh oh!! Urgent advice please....
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Wed, 19 January 2005 21:11
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next question - the oil filter. Did you put a new one on, because they can retain water, and the same thing freaked me out on my last head gasket swap and turned out being water in the oil filter.
Replaced oil filter all was good.
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Membership Secretary
Location:
Sydney
Registered:
June 2002
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Re: uh oh!! Urgent advice please....
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Sat, 22 January 2005 23:44
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Yeah I initally tourqued the bots to a little over factory, and then did the retourque at 600km or so kms.
I can't quite remember but I think I Just wound them up didn't back them off not 100% sure though this was a while ago
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Location:
On your mum!
Registered:
May 2002
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Re: uh oh!! Urgent advice please....
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Sun, 23 January 2005 01:45
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If the head gasket is a mono-torque type then DO NOT retorque it. These are specifically designed with a glue that will crack if it is retensioned and cracking is not good for longevity. Always go with the advice of the gasket manufacturer.
Apart from that I have nothing to offer over what has already been said.
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Location:
Brisbane
Registered:
July 2004
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Re: uh oh!! Urgent advice please....
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Sun, 23 January 2005 06:52
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Well i used 100% genuine parts in the repair, so i'm unsure if the toyota HG is monotorque or not. It is similar in appearance to the non genuine HG i pulled out -ie: some sort of carbon based material around a metallic frame. That gasket had to be retorqued, but i'm not at all sure of the toyota one.
PS: The oily residue has all but disappeared, to my great relief it seemed to be left over WD40 that got into the water jackets as over 100kms later there is little more than a small amount of oil floating on the surface, you can only tell by catching it on the right light angle.
The car runs faultless now, i can definatley see why these cars created such as hype back in the late 80's, even now it would be competitive with most sedans less than half its age in most areas.
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