Block flush hi need to know where my block coolant drain is i have a1991 st182,with 3sge engine.cant seem to find it.

For the do-it-yourselfer:
To begin, some communities have pollution laws that would tell you you are in violation for this, unless you could catch every drop of coolant.
If you did so, I do not know of anywhere you could legally dispose of it! :-(
The coolant is poison to living things.
However.
If you left the engine thermostat in, flushing with a hose or whatever can take up to 20 minutes with the engine running and the radiator drain open.
Removing the thermostat and reinstalling the thermostat housing where it fits causes the flush to take closer to 5 minutes.
I'm sure you know all this flushing is to be done with the heater turned on, so you are flushing the heater as well.
When you are finished with flushing, yes, you will have about half the flush water inside the engine block.
You can add straight anti-freeze coolant to the radiator to blend them.
You will need to run the motor about 10 minutes to get any trapped air out of the system, all the while watching the coolant level in the radiator.
Remember to leave the heater on, because you get air-lock in the heater.
God bless your efforts.

Most radiators have a drain plug on the bottom tank the engine block also has a drain plug . Remove the radiator cap ,open both drains ,let all the coolant run out, if there is no radiator plug remove the lower hose , remove the heater demister hoses, with the heater control on hot flush out all the coolant from the heater radiator. with a garden hose, till the water runs clean, tighten the radiator plug or re fit the hose,put a garden hose into the radiator and flush out till the water at the block plug runs clean ,refit the heater hoses, refit the block plug, fill the radiator from the hose leave the cap off , If it has a overflow tank clean and flush it. start and run engine for 5 minutes top up radiator if needed . stop engine and drain out all water. most important that all old coolant is drained out, only buy the best coolant you can . If you make up your own use only distilled water. keep some to top up with never mix with another brand. Fill radiator with coolant top up over flow tank, run engine top up coolant as needed, refit radiator cap run for another 10 minutes check for leaks,

drain coolant system locate heater cores hoses going through firewall you need to buy the radiator flush kit at any auto parts stores. remove heater cores hoses from one end or buy extra long heater hoses same size as heater core hoses in vechicle at auto parts store use the flush kit when you flush through one of the heater core hoses let the other hose drain in a drain pan when you use home garden hose use low water pressure dont use garden hose to the max or you will rupture heater core. your best bet let radiator shop flush whole coolant system. because heater cores hoses are in a tight spot.make sure engine off if you just going to flush out heater core only .after flushing heater core good time to replace heater core hoses.if job too hard or complicated let radiator shop flush out radiator the engine block and heater core because if radiator stopped up or engine block stopped up the gunk and rust will reenter plug up heater core.if you tight on money you can flush out your own radiator.drain out radiator using large drain pan. remove top radiator hose and remove bottom radiator hoses connect to water pump.use garden hose with flush kit part with water pressure not too high put garden hose to top radiator hose run water until clear water run out bottom radiator hose in drain pan,the flush out engine block remove thermostat.if you had another spare thermostat housing with RTV SILICONE SEALANT THAT HAS SET UP INSTALL THERMOSTAT HOUSING BACK TO ENGINE WITHOUT THERMOSTAT FLUSH OUT THE ENGINE BLOCK, WHEN DONE INSTALL NEW THERMOSTAT THEN INSTALL ORIGINAL THERMOSTAT HOUSING WITH NEW ORING WHICH YOU BUY AT DEALERSHIP.IF ALL SOUND COMPLICATED LET RADIATOR SHOP FLUSH OUT COOLANT SYSTEM.

The engine holds coolant and so does the heater core, the core not much but the engine holds maybe 2 or so gallons, the engine has coolant in the intake ,heads and block. to say you can drain it all complete is impossible, unless you find drain plugs on the side of the engine block and remove them, there is one on each side of the block, if you removed those you would get 90% of the coolant,with also draining the radiator. the only other way would be with a flush machine. i am a tech and the way you said the coolant was clean and you drained all you could then i would say if you keep doing it the way you are you will be fine, i drain mine the same way every year which is to soon for some but not me and i have never had a problem. the only time i drain the blocks at work is when people dont change the coolant for years and it gets rusted, then i remove the plugs. keep doing the flush the way you are and it will be fine, good day. have a good day.

Coolant capacity is 7.7 qts./7.3 liters, for a 2.4 liter 2003 Kia Optima.
You will not be able to get all the coolant out of the engine, unless you do a thorough engine drain and flush. If you only plan on draining the radiator, you will need less than 2 gallons mixed total to refill it, since some coolant will remain in the engine block and heater core.

find where top hose comes from the radiator into the engine block, then drain some of the coolant out and remove hose and thermostat from the block. remember which way the termostat sits in the block and install new one. its always a good idea to flush your cooling system before putting in a new thermostat. if the old one was plugged up, the gunk thats in your system will just plug up the new one in time too. you can get a bottle of radiator flush from most auto parts stores.

I see no problem you doing this yourself. First i would pour some coolant flush in it and run it a couple of days, secound instead of useing the pip **** to drain it, when its cool remove the bottom radiator hose from the radiator and drain it that way, its faster and you will get more out of the engine block that way, (unless your going to pull the block drains.) Just make sure you get it full when you refill it so you don't get any air pockets in the system. What i do is pull the thermostat and fill the engine block from there and reinstall thermostat and then the radiator that way i know that i did not get any air in the system.

if the pump is leaking then it needs replacing it sounds like someone in the past has introduced glycol based coolant in to a oat. organic acid tech coolant system THEY DO NOT MIX and go like brown jelly and block things up like heater/ac systems it needs a good flush using a cooling system flushing adative

there is no coolant drain on the block. however take the lower radiator hose off and you should be able to get it to drain completely.

there is no drain plug on the engine block unfortunately, however taking the lower radiator hose off will drain almost all the coolant out off the block. then reconnect the lower hose and fill completely with just water and flush solution let sit for a few minutes. then take lower hose off again let it completely drain. reconnect lower hose and fill with 60/40 mix of coolant this will protect to -40 degrees F. when you have it completely full keep cap off radiator and start vehicle turn your heater on hot and the fan to high. top off with coolant and replace cap. there should be no need to bleed system of air. please rate this solution.