problems bleeding coolant

[hkssupratt1994]

i cant seem to find the engine block coolant drain plug.and i did everything else the faqs told me to on here and two days after i bleed it,it starts runing hotter then it should but not overheating.and it goes up when i acele .hard and goes back down when i slow down am i not bleeding it right and how do you know if theres air still inside?

[matt4pl]

its on the drivers side of the block, should be near and under the 3rd cylinder exhaust port, 14mm, have fun with it, it was a pain for me

[hkssupratt1994]

im sure i will

[redhorse64]

How did you make out with this issue?Is it the same on a 1992 240sx?

I had my radiator off & drained and since I put everything back together, I am having a serious overheating issue. Runs great now, but I can't drive because it overheats just during warmup, before I can even get driving.

???

Red.

[hkssupratt1994]

i didnt drain the block i just put 70% distilled water i got from kroger redline water wetter and 30% coolant and just bleed the system and drove it around and keept adding more distilled water and it never overheats plus i dont have a termostat in it right now but it does fine with out it

[matt4pl]

why are you not using a thermostat?

[hkssupratt1994]

before i knew how to bleed it right i took it out to see if it would help the overheating problem so it helped it and i have it bled right now and it does fine so i dont mess with it

[matt4pl]

buy a new one, install it, bleed, your car should take forever to warm up, and then should over heat...

[hkssupratt1994]

it doesnt take that long it takes about 3 miles to get warmed up and gets to the thurd notch on the temp gauge where i beileve is the right temp for it to run at.i might get a 190 themostat and put it in and see what happens but im not gunna mess with it now cause its runing great

[redhorse64]

Just to let ya know:When I installed my new OEM Thermostat I had the same problem as you & I eventually figured out the hard way, how to properly bleed my system. At the advice of a local Radiator Repair Shop guy, I filled the system with 50/50 coolant, from the top hose. Yes, by removing the TOP HOSE at the radiator end & filling the system that way. Then real quick put the end back on the radiator without spilling too much, and the using the little Air Purge Screw, I was able to get all of the air out of the system.So, all is fine now & running great.Take care,Red.

[240sxmech]

I read on here more stories of people having bleeding problems. Never had one and dont see why all the people here do. What you do if you drain the system for a change of fluid or a repair is- Unscrew your air relief then fill with coolant and water till coolant comes out the air relief screw then tighten screw and topoff fluid.

[matt4pl]

bleeding 240's is a pain, mostly cause it takes time if its a totally empty system, but its straight forward, and jiggling the motor and squeezing/shaking the hoses helps, so does having the front jacked up.

as for running without a thermostat, your engine will overheat without you even knowing it...