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coolant issue
Posted:
Thu Oct 20, 2011 12:59 pmby neo27ny
I just put my radiator back in, filled up with antifreeze and there doesn't seem to be any coolant flow through the radiator hoses. It was going fine before and I could feel the pressure in the hoses, now I can squeeze them and there is nothing there. What would cause this?
Posted:
Thu Oct 20, 2011 1:31 pmby teal_dx
Sounds like you did not bleed the system.
Run the engine with the radiator cap off and when it reaches normal temps, the thermostat will open and the coolant will begin to circulate. Keep topping off the radiator every time it gets low and you'll fill in all the air pockets and be good.
You may need to have someone hold the RPM's as a couple grand to get the temps up faster.
Posted:
Thu Oct 20, 2011 5:48 pmby lunaticracer21
and run the heater also with radiator cap off
teal_dx wrote:Sounds like you did not bleed the system.
Run the engine with the radiator cap off and when it reaches normal temps, the thermostat will open and the coolant will begin to circulate. Keep topping off the radiator every time it gets low and you'll fill in all the air pockets and be good.
You may need to have someone hold the RPM's as a couple grand to get the temps up faster.
Posted:
Thu Oct 20, 2011 7:47 pmby neo27ny
Thanks! I was a bit sketchy about running the car up to temp with the fluid not circulating. I'll give it a go.
Posted:
Thu Oct 20, 2011 11:24 pmby lunaticracer21
keep us up dated
Posted:
Fri Oct 21, 2011 6:39 pmby neo27ny
Picked up some more antifreeze today, topped it off. I let the car run for about a half hour and the top hose started to get hot bottom one was cold and still no coolant flow. Also my fan never came on. How long does it usually take to reach temp? The temp gauge was at half, seemed to stop there.
Posted:
Fri Oct 21, 2011 7:26 pmby lunaticracer21
your thermostat is stuck replace it or run the car with out it and then check for coolant flow
Posted:
Fri Oct 21, 2011 7:49 pmby RWMIII
lunaticracer21 wrote:your thermostat is stuck replace it or run the car with out it and then check for coolant flow
Normally a half hot/half cold radiator means that the radiator is clogged.
Posted:
Fri Oct 21, 2011 7:50 pmby RWMIII
lunaticracer21 wrote:your thermostat is stuck replace it or run the car with out it and then check for coolant flow
and it is not recommended to run your car without a thermostat
Posted:
Fri Oct 21, 2011 9:25 pmby lunaticracer21
i run all my cars a street bike with no thermostat ive never had a problem
Posted:
Fri Oct 21, 2011 11:36 pmby Honda4life
i would flush out your radiator, and then replace your thermostat. It does sound like the thermostat is stuck
Posted:
Sat Oct 22, 2011 12:09 amby RWMIII
Honda4life wrote:i would flush out your radiator, and then replace your thermostat. It does sound like the thermostat is stuck
Posted:
Sat Oct 22, 2011 3:06 amby lunaticracer21
just take out the old thermostat and put everthing back together put coolant in it a see if it flows if it dose put in a new thermostat keep me posted
Posted:
Tue Oct 25, 2011 5:39 pmby neo27ny
I took out the thermostat put it back together, started it up and let it run. I could see flow through the fill hole in the top of the radiator. It was churning around and bubbling, I kept adding more and it would bubble up air and go down a little. It just just doesn't feel like any pressure in the hoses still though, but apparently it is flowing. Any ideas?
I also boiled my thermostat to test if it was working and it opens and closes fine. With or without the thermostat I'm not feeling pressure in the hoses.