ON Topic: 88 Supra overheating...
in [Toyota]
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From: jim beam on 4 Jun 2010 00:54 On 06/03/2010 08:52 PM, Ray O wrote: > "Hachiroku ????"<Trueno(a)e86.GTS> wrote in message > news:dZFNn.21379$7d5.12341(a)newsfe17.iad... >> On Wed, 02 Jun 2010 23:04:28 -0500, Ray O wrote: >> >>> >>> "Hachiroku ????"<Trueno(a)e86.GTS> wrote in message >>> news:JAFNn.35974$h57.25681(a)newsfe22.iad... >>>> I know there are techs in all three groups, hence the cross posting.... >>>> >>>> The other day, the day it got clobbered by the storm, it was 96 degrees >>>> in Keene NH. That's ~35 miles from home. Since it was nice I decided to >>>> take the roof off the Supra and use it for my daily rounds. >>>> >>>> Everything was fine until about mile 27, and then I noticed the temp >>>> climbing. By the time I got to my first stop it was almost to the red. >>>> >>>> It behaved the rest of the time in Keene, and then, about 27 miles later >>>> it was heating up again. >>>> >>>> I opened the radiator and it was down about a quart, but the bottle was >>>> on "low". I filled the radiator and let it sit for a couple rainy days. >>>> >>>> Today was bright and sunny and about 86 degrees, so, since the roof >>>> doesn't *quite* fit as well after making like a kite it sits in the >>>> trunk, and again the ~35 mile trip to Keene. 27 miles up the >>>> road...almost in the red again. When I got to where I pick up my parts I >>>> let it cool and then opened the hood, and in front of the radiator the >>>> shroud attached to the bottom of the car was wet, and the overflow >>>> bottle was FULL. Spring a leak? I patched one split in the plastic top >>>> a couple years ago, and it had sprung again. When I filled it I did not >>>> add any to the bottle. >>>> >>>> It ran OK for the few stops I had, then back home...27 miles... >>>> >>>> When I got home I left the heat on and would start it, ramp the non >>>> eletric fan up and shut it down. After about 1/2 an hour letting it sit, >>>> I went out and gingerly removed the radiator cap. The cap was COOL! >>>> Again... down about a quart in the readiator, but this time the bottle >>>> was full. >>>> >>>> I am guessing the radiator is plugged up. It is the original 22 year old >>>> radiator, so I ordered a new one. From Toyota? HAH! Even though they >>>> last +20 years, they are also FOUR HUNDRED AND EIGHTY SEVEN DOLLARS!!! >>>> >>>> SPI, $130. It may only last seven years, but then, how much longer will >>>> the car last? (Although it is in pretty good shape...) >>>> >>>> BTW, I had the SAME THING happen to my '89 Subaru GL coupe, and after >>>> replacing the radiator I don't even need the fan, the thing runs so >>>> cool. >>>> >>>> >>> Replace the cap while you're at it. >> >> I think it comes with one. >> >> I was thinking about that, but the cap is openeing up and letting the >> coolant flow into the bottle. >> >> The coolant I saw in the shroud was the stuff that was being purged out of >> the bottle... >> >> I think I might actually get a real Toyota cap, if it fits. They're only >> $11... >> > > A bad cap will open too soon so the cooling system doesn't maintain > pressure, and if the cooling system doesn't maintain pressure, the boiling > temp goes down, more coolant gets pushed out, air gets in, and temps rise. > > A blown head gasket can allow combustion gases into the coolant, which > pushes coolant out, and temps rise. > > Look for oil in the coolant, either in the radiator or a milkshake > appearance in the oil. Either symptom can indicate a BHG. If the coolant > and oil are pristine, then you have a leak somewhere in the cooling system - > radiator, hoses, cap, or heater core. with open deck designs, like honda d-series for instance, you only occasionally get oil/water mixing. with open deck, leakage vents exhaust gas straight into the coolant. the only symptoms are bubbling, even when cold as it gets bad, and the coolant pH test. and latterly of course, blown hoses and catastrophic coolant loss. > > While you're poking around make sure coolant isn't weeping or leaking from > the timing cover, a sign of a leaking water pump. -- nomina rutrum rutrum
From: Tegger on 4 Jun 2010 06:16 =?iso-2022-jp?q?Hachiroku_=1B$B%O%A%m%=2F=1B=28B?= <Trueno(a)e86.GTS> wrote in news:O6ZNn.39700$Ak3.17940(a)newsfe16.iad: > > How do I know if I've blown a gasket? How's the stuff in the bottle/rad smell? Rubbery? Or like paint-thinner? -- Tegger
From: Tegger on 4 Jun 2010 06:17 "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote in news:hu9ui8$81p$1(a)news.eternal-september.org: >> > > A gas leak detector will work. Like this one? <http://www.grahamtool.com/combustionleakdetector.aspx> -- Tegger
From: Hachiroku ハチロク on 4 Jun 2010 18:23 On Thu, 03 Jun 2010 22:52:38 -0500, Ray O wrote: > > "Hachiroku ????" <Trueno(a)e86.GTS> wrote in message > news:dZFNn.21379$7d5.12341(a)newsfe17.iad... >> On Wed, 02 Jun 2010 23:04:28 -0500, Ray O wrote: >> >> >>> "Hachiroku ????" <Trueno(a)e86.GTS> wrote in message >>> news:JAFNn.35974$h57.25681(a)newsfe22.iad... >>>>I know there are techs in all three groups, hence the cross posting.... >>>> >>>> The other day, the day it got clobbered by the storm, it was 96 >>>> degrees in Keene NH. That's ~35 miles from home. Since it was nice I >>>> decided to take the roof off the Supra and use it for my daily rounds. >>>> >>>> Everything was fine until about mile 27, and then I noticed the temp >>>> climbing. By the time I got to my first stop it was almost to the red. >>>> >>>> It behaved the rest of the time in Keene, and then, about 27 miles >>>> later it was heating up again. >>>> >>>> I opened the radiator and it was down about a quart, but the bottle >>>> was on "low". I filled the radiator and let it sit for a couple rainy >>>> days. >>>> >>>> Today was bright and sunny and about 86 degrees, so, since the roof >>>> doesn't *quite* fit as well after making like a kite it sits in the >>>> trunk, and again the ~35 mile trip to Keene. 27 miles up the >>>> road...almost in the red again. When I got to where I pick up my parts >>>> I let it cool and then opened the hood, and in front of the radiator >>>> the shroud attached to the bottom of the car was wet, and the overflow >>>> bottle was FULL. Spring a leak? I patched one split in the plastic >>>> top a couple years ago, and it had sprung again. When I filled it I >>>> did not add any to the bottle. >>>> >>>> It ran OK for the few stops I had, then back home...27 miles... >>>> >>>> When I got home I left the heat on and would start it, ramp the non >>>> eletric fan up and shut it down. After about 1/2 an hour letting it >>>> sit, I went out and gingerly removed the radiator cap. The cap was >>>> COOL! Again... down about a quart in the readiator, but this time the >>>> bottle was full. >>>> >>>> I am guessing the radiator is plugged up. It is the original 22 year >>>> old radiator, so I ordered a new one. From Toyota? HAH! Even though >>>> they last +20 years, they are also FOUR HUNDRED AND EIGHTY SEVEN >>>> DOLLARS!!! >>>> >>>> SPI, $130. It may only last seven years, but then, how much longer >>>> will the car last? (Although it is in pretty good shape...) >>>> >>>> BTW, I had the SAME THING happen to my '89 Subaru GL coupe, and after >>>> replacing the radiator I don't even need the fan, the thing runs so >>>> cool. >>>> >>>> >>> Replace the cap while you're at it. >> >> I think it comes with one. >> >> I was thinking about that, but the cap is openeing up and letting the >> coolant flow into the bottle. >> >> The coolant I saw in the shroud was the stuff that was being purged out >> of the bottle... >> >> I think I might actually get a real Toyota cap, if it fits. They're only >> $11... >> >> > A bad cap will open too soon so the cooling system doesn't maintain > pressure, and if the cooling system doesn't maintain pressure, the boiling > temp goes down, more coolant gets pushed out, air gets in, and temps rise. > > A blown head gasket can allow combustion gases into the coolant, which > pushes coolant out, and temps rise. > > Look for oil in the coolant, either in the radiator or a milkshake > appearance in the oil. Either symptom can indicate a BHG. If the coolant > and oil are pristine, then you have a leak somewhere in the cooling system > - radiator, hoses, cap, or heater core. > > While you're poking around make sure coolant isn't weeping or leaking from > the timing cover, a sign of a leaking water pump. The coolant in the bottle looked OK. The coolant in the radiator...couldn't be seen. It must have blown a lot of it out. Last time it took a quart. I have a new SPI radiator (I know, I know, but it was $123 compared to $487!) so I'll remove the rad, drain and flush the cooling system, and then replace and refill, and cross my fingers... And, of course, after being nice yesterday and today, it's going to rain all weekend, and then be really nice for the next four days after... BTW, I haven't checked the oil yet. I'll do that tomorrow.
From: Hachiroku ハチロク on 4 Jun 2010 18:24
On Fri, 04 Jun 2010 10:17:26 +0000, Tegger wrote: > "Ray O" <rokigawa(a)NOSPAMtristarassociates.com> wrote in > news:hu9ui8$81p$1(a)news.eternal-september.org: > > > >>> >> A gas leak detector will work. > > > > Like this one? > <http://www.grahamtool.com/combustionleakdetector.aspx> Hey! I have one of those! Oh, wait...um, never mind... |