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cossie water/oil mixing?!

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Old 18-11-2009, 08:32 PM
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cossie15
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Default cossie water/oil mixing?!

Hi guys think the oil and water are mixing on me cossie, done compression test today, got close to 10 bar pressure on all cylinders. Any ideas what could be?
Old 18-11-2009, 08:35 PM
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forevaford
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if its a 205 block (2wd) then a cylinder could have cracked, i had this once, changed the heagasket twice before i noticed lol
Old 18-11-2009, 08:57 PM
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ryanstodd
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Default mixing ????

can be a couple of things mate either the head gasket split from oil to water this will make a throthy white/brown gunge on bottom of oil cap and put a oily look in your water bottle, or perhaps youve give her to much for to long and the heat has put a fine split in your turbos centre housing, explain more wots hapenin, over heating, preasure in water,oil, losing water? how much? etc...
Old 18-11-2009, 09:03 PM
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Default mixing ????

can be a couple of things mate either the head gasket split from oil to water this will make a throthy white/brown gunge on bottom of oil cap and put a oily look in your water bottle, or perhaps youve give her to much for to long and the heat has put a fine split in your turbos centre housing, explain more wots hapenin, over heating, preasure in water,oil, losing water? how much? etc...
Old 18-11-2009, 09:04 PM
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t4 and greys
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Originally Posted by forevaford
if its a 205 block (2wd) then a cylinder could have cracked, i had this once, changed the heagasket twice before i noticed lol

at very worst what he said ^^^^^^^
Old 18-11-2009, 09:17 PM
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Default mixing ????

can be a couple of things mate either the head gasket split from oil to water this will make a throthy white/brown gunge on bottom of oil cap and put a oily look in your water bottle, or perhaps youve give her to much for to long and the heat has put a fine split in your turbos centre housing, explain more wots hapenin, over heating, preasure in water,oil, losing water? how much? etc...
Old 18-11-2009, 09:25 PM
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i would check or by pass the oil cooler behind the oil filter,see if this stops the problem.most of the time its the simple things that get overlooked.is it 2 0r 4 wd?
Old 19-11-2009, 07:08 AM
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tabetha
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It is easy and free to check a few things first, like as said the modine, as these do develop leaks inside and allow oil water to mix.
Just because a hg is blown does not mean it won't have perfect compression, it just depends where it is blown.
Due to age gaskets will rot/degenerate anyway, so could still be hg, but rule eveything else out first, very unlikely to be bearing housing on turbo, but easy way to see is just disconnect the water supply and temporarily bypass, will do no harm what so ever.
tabetha
Old 19-11-2009, 08:18 AM
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cossie15
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Default cossie oil/water mixing?

I know the turbo seals have gone, its got oil in pipes etc. The bearing however has minimal play. The coolent level stays the same, just browney colour. Theres also no colour on the oil cap/dip stick, just oil. Theres no overheating so was thinking maybe the turbo????
Old 19-11-2009, 03:18 PM
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tabetha
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Are you sure it's oil you are seeing and not some remnants of old leak seal stuff ?
tabetha
Old 20-11-2009, 08:26 PM
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cossie15
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maybe its hard to tell due to the stainless steel header tank. will check to turbo over the weekend.
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