coolant overflowing
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From: Chiswick
Originally Posted by macprotege5,Jun 13 2007, 08:37 PM
well, i installed the mugen thermostat and fan switch, samco hoses, and arc rad cap tonight and so far so good. i haven't gone into boost yet but the car is not overheating at all. tomorrow i am going to finish getting all the air out of the system and make a few hard runs and see how it goes.
also i am going to test my old rad cap at work tomorrow to see if it possibly had anything to do with the overheating. i have not done a leakdown test. what should the compression test numbers be at with a 3mm headgasket?
soulcoughing - are you running a stock headgasket?
also i am going to test my old rad cap at work tomorrow to see if it possibly had anything to do with the overheating. i have not done a leakdown test. what should the compression test numbers be at with a 3mm headgasket?
soulcoughing - are you running a stock headgasket?
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soul - are you getting any white smoke out the tail pipe? have you checked your spark plugs for any signs of coolant? i am almost 100% sure its not a headgasket in my case because correct me if i am wrong but wouldn't coolant either be in the oil or wouldn't there be some sign of coolant elsewhere, either inside or outside of the motor, if the headgasket was the problem? even if the head was cracked or something of that nature wouldn't there be some kind of sign of this? like say if a cylinder wall was scratched or broken somehow and the coolant jacket was messed up, again wouldn't there be some kind of fluid mixing?
remember that in my original post i had mentioned the upper hose being hot and the lower hose being cold even after ripping on the car and overheating. that would make me believe it was a bad thermostat. i put the old thermostat in water then boiled it and it opened like it should. is it possible that under the conditions the thermostat saw on the vehicle that it could stick closed, and then when in the boiling water operate normally?
remember that in my original post i had mentioned the upper hose being hot and the lower hose being cold even after ripping on the car and overheating. that would make me believe it was a bad thermostat. i put the old thermostat in water then boiled it and it opened like it should. is it possible that under the conditions the thermostat saw on the vehicle that it could stick closed, and then when in the boiling water operate normally?
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From: Boca Raton
Originally Posted by macprotege5,Jun 14 2007, 06:37 AM
soul - are you getting any white smoke out the tail pipe? have you checked your spark plugs for any signs of coolant? i am almost 100% sure its not a headgasket in my case because correct me if i am wrong but wouldn't coolant either be in the oil or wouldn't there be some sign of coolant elsewhere, either inside or outside of the motor, if the headgasket was the problem? even if the head was cracked or something of that nature wouldn't there be some kind of sign of this? like say if a cylinder wall was scratched or broken somehow and the coolant jacket was messed up, again wouldn't there be some kind of fluid mixing?
remember that in my original post i had mentioned the upper hose being hot and the lower hose being cold even after ripping on the car and overheating. that would make me believe it was a bad thermostat. i put the old thermostat in water then boiled it and it opened like it should. is it possible that under the conditions the thermostat saw on the vehicle that it could stick closed, and then when in the boiling water operate normally?
remember that in my original post i had mentioned the upper hose being hot and the lower hose being cold even after ripping on the car and overheating. that would make me believe it was a bad thermostat. i put the old thermostat in water then boiled it and it opened like it should. is it possible that under the conditions the thermostat saw on the vehicle that it could stick closed, and then when in the boiling water operate normally?
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From: Chiswick
Originally Posted by macprotege5,Jun 14 2007, 06:37 AM
soul - are you getting any white smoke out the tail pipe? have you checked your spark plugs for any signs of coolant? i am almost 100% sure its not a headgasket in my case because correct me if i am wrong but wouldn't coolant either be in the oil or wouldn't there be some sign of coolant elsewhere, either inside or outside of the motor, if the headgasket was the problem? even if the head was cracked or something of that nature wouldn't there be some kind of sign of this? like say if a cylinder wall was scratched or broken somehow and the coolant jacket was messed up, again wouldn't there be some kind of fluid mixing?
remember that in my original post i had mentioned the upper hose being hot and the lower hose being cold even after ripping on the car and overheating. that would make me believe it was a bad thermostat. i put the old thermostat in water then boiled it and it opened like it should. is it possible that under the conditions the thermostat saw on the vehicle that it could stick closed, and then when in the boiling water operate normally?
remember that in my original post i had mentioned the upper hose being hot and the lower hose being cold even after ripping on the car and overheating. that would make me believe it was a bad thermostat. i put the old thermostat in water then boiled it and it opened like it should. is it possible that under the conditions the thermostat saw on the vehicle that it could stick closed, and then when in the boiling water operate normally?
i changed my thermostat and radiator cap, thinking that was the problem as well... It still did the same thing, after a day.
you can have such a small hole in your headgasket that it wouldnt be mixing with the oil or coolant... at least the only oil you would see in your coolant would be the oil from blowby...
in regards to the lower coolant line being cool, if you just idling and driving around in slow traffic you might get away with the TStat not opening, but when i was driving around without the car fully bled, the car would start to over heat pretty quickly if i was driving at steady speeds over 40-50mph...
i guess just cehck to see if the coolant gets sucked back into the overflow tank, and if you take the radiator cap off it isnt under pressure, even after the car has cooled down..
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From: Springfield, VA
If you guys take the radiator cap off in the morning when the car is completely cold, and the there is pressure in the coolant system, it could be a blown headgasket.
Also you can feel the upper radiator hose after the car is completely cool to see if there is any pressure OR if there is any coolant in the overflow in the morning and its cold.
Make sure the coolant system is properly bled.
Also you can feel the upper radiator hose after the car is completely cool to see if there is any pressure OR if there is any coolant in the overflow in the morning and its cold.
Make sure the coolant system is properly bled.
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ogpackin - how do i go about checking these coolant values? i have no experience at all with the aem or any management for that matter. i just don't want to mess up the map that the car is currently on.
soul - about the lower hose being cool. i was ripping on the car pretty hard on the highway and man was it running oh so nice! it was only after those few runs and a few miles of 40-50 mph and then some coasting in neutral at 35mph that i noticed it starting to overheat. i got home, popped the hood and checked if anything was leaking (just the overflow vent tube) as i was checking things even just a few minutes after overheating the lower hose was cold and upper was hot. and then about an hour later i checked them again and there was a noticeable temp difference between the hoses. now that i have the tstat, rad cap, fan switch and hoses installed the car is not exhibiting any of those symptoms. the only thing is i haven't hit boost yet because i want to make sure the system is completely bled. but with just driving around a few miles and idling for several fan cycles there is no overheating to be had. tonight when i get home i am gonna go drive it some more and make sure its completely bled and then hit some boost and see how she fares.
ya - i didn't get to check anything this morning as i didn't have time (overslept
) when i get home tonight i will check the level and if there is any pressure in the system.
soul - about the lower hose being cool. i was ripping on the car pretty hard on the highway and man was it running oh so nice! it was only after those few runs and a few miles of 40-50 mph and then some coasting in neutral at 35mph that i noticed it starting to overheat. i got home, popped the hood and checked if anything was leaking (just the overflow vent tube) as i was checking things even just a few minutes after overheating the lower hose was cold and upper was hot. and then about an hour later i checked them again and there was a noticeable temp difference between the hoses. now that i have the tstat, rad cap, fan switch and hoses installed the car is not exhibiting any of those symptoms. the only thing is i haven't hit boost yet because i want to make sure the system is completely bled. but with just driving around a few miles and idling for several fan cycles there is no overheating to be had. tonight when i get home i am gonna go drive it some more and make sure its completely bled and then hit some boost and see how she fares.
ya - i didn't get to check anything this morning as i didn't have time (overslept
) when i get home tonight i will check the level and if there is any pressure in the system.
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well, so far so good. i didn't go for a long drive but i hit 15psi several times and the car is operating as it should. the real test will be tomorrow after work when i can get on the highway. hopefully all the air is out, but i also will not know that till tomorrow.
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