signs of blown head gasket?
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From: Anne Onime on 6 Aug 2010 02:15 My engine developed a noise a few weeks back. A mechanic told me it was crankshaft bearings (the engine has done 250,000 km). It is worse the last couple of days. Then I noticed the temperature guage is about 1/8 higher than normal. I had a look at cooling system, and when I took off the radiator cap, there is brown cream on it, and the filler neck. Is this oil getting into the coolant, i.e. a failed gasket?
From: Scott Dorsey on 6 Aug 2010 09:42 In article <41fc7bfc2f3281c9c7d0a84772e3df89(a)rip.ax.lt>, Anne Onime <anonymous(a)rip.ax.lt> wrote: >My engine developed a noise a few weeks back. A mechanic >told me it was crankshaft bearings (the engine has done >250,000 km). It is worse the last couple of days. Then >I noticed the temperature guage is about 1/8 higher than >normal. I had a look at cooling system, and when I took >off the radiator cap, there is brown cream on it, and the >filler neck. Is this oil getting into the coolant, i.e. >a failed gasket? That is oil getting into the coolant. It could be getting into the coolant for a whole bunch of reasons, most of which are a lot worse than a head gasket. So you should _hope_ it is a head gasket. If your crankshaft bearings are going bad, it might be because you have coolant in the oil as well and your bearings are not being properly lubricated. If you have been driving a couple weeks like that, you might as well just replace the engine now. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis."
From: jim beam on 6 Aug 2010 11:25 On 08/06/2010 06:42 AM, Scott Dorsey wrote: > In article<41fc7bfc2f3281c9c7d0a84772e3df89(a)rip.ax.lt>, > Anne Onime<anonymous(a)rip.ax.lt> wrote: >> My engine developed a noise a few weeks back. A mechanic >> told me it was crankshaft bearings (the engine has done >> 250,000 km). It is worse the last couple of days. Then >> I noticed the temperature guage is about 1/8 higher than >> normal. I had a look at cooling system, and when I took >> off the radiator cap, there is brown cream on it, and the >> filler neck. Is this oil getting into the coolant, i.e. >> a failed gasket? > > That is oil getting into the coolant. > > It could be getting into the coolant for a whole bunch of reasons, most > of which are a lot worse than a head gasket. So you should _hope_ it is > a head gasket. > > If your crankshaft bearings are going bad, it might be because you have > coolant in the oil as well and your bearings are not being properly > lubricated. If you have been driving a couple weeks like that, you might > as well just replace the engine now. > --scott what he said. -- nomina rutrum rutrum
From: m6onz5a on 6 Aug 2010 16:38 On Aug 6, 2:15 am, Anne Onime <anonym...(a)rip.ax.lt> wrote: > My engine developed a noise a few weeks back. A mechanic > told me it was crankshaft bearings (the engine has done > 250,000 km). It is worse the last couple of days. Then > I noticed the temperature guage is about 1/8 higher than > normal. I had a look at cooling system, and when I took > off the radiator cap, there is brown cream on it, and the > filler neck. Is this oil getting into the coolant, i.e. > a failed gasket? with the radiator cap off and the engine running is the coolant level rising??? that's also a sign it's bad.
From: jim beam on 9 Aug 2010 11:19
On 08/06/2010 01:38 PM, m6onz5a wrote: > On Aug 6, 2:15�am, Anne Onime<anonym...(a)rip.ax.lt> wrote: >> My engine developed a noise a few weeks back. A mechanic >> told me it was crankshaft bearings (the engine has done >> 250,000 km). It is worse the last couple of days. Then >> I noticed the temperature guage is about 1/8 higher than >> normal. I had a look at cooling system, and when I took >> off the radiator cap, there is brown cream on it, and the >> filler neck. Is this oil getting into the coolant, i.e. >> a failed gasket? > > with the radiator cap off and the engine running is the coolant level > rising??? that's also a sign it's bad. not true - like most materials, coolant expands as it gets hot anyway. that's why there's an expansion bottle. if you mean "excessive" expansion, that's usually accompanied by bubbles - in that case, bubbles are what you should be looking for, not simply expansion. -- nomina rutrum rutrum |