94 Nissan sentra is leaking radiator coolant however do not know where?
I use a radiator pump. It puts about 15 pounds of pressure on the water, sometimes the leak is immediate, sometimes you have to leave it overnight. Sometimes you can't find the leak and some months later you need a head gasket and you figure that must have been it. Does your oil filler cap have chocolate milkshake inside.
Do you spark plugs appear a little like rust on the porcelane inside.
Keep us posted.
94 Nissan sentra is leaking radiator coolant however do not know where?
start the car and look at the hoses that comes from the rad and you will see the coolant when the pressure gets up on the car
Look at your tail pipe, car running. White smoke? That's steam. You have a water leak letting coolant into the engine, intake or head gasket bad. No? Get a large piece of cardboard, park on it overnight. Drive off in the morning and see where the drip is. Look there for the leak.
You didn't mention how much coolant you need to add each time but it must be a significant amount. You should get your cooling system pressure tested. Connect a pressure tester and pump it up to the pressure rated for the car (or the rating showing on the cap). Leave it pressurized for at least 15 minutes. If the pressure drops you have a leak somewhere and need to track it down. It may be internal if there is no leak outside. If the pressure holds then it may be a problem that only happens when the engine is hot. To check this, connect the pressure tester but do not pressurize the system. Start the engine and watch the pressure buildup as the engine gets hot. If it shoots up high quickly, you may have a head gasket leak. If it gradually gets up to 15 psi and no leaks are apparent then the system is probably fine. If that is the case, connect the tester adapter to test the cap, which is probably the culprit if everything is ok. Also check the rating on the cap and make sure it matches the required pressure rating for the vehicle.
Note: If you have any oil in the coolant, coolant in the oil, or white smoke in the exhaust you may have a head gasket leak. If the vehicle is automatic, check for coolant in the tranmission or auto trans fluid in the cooling system. That would indicate a leaking trans oil cooler in the radiator.
OK check your radiator to make sure core isn't leaking, check your heater hoses both to the firewall %26amp; to waterpump, check heater core (is your passenger floor wet?), if wet that's heater core.
Heatercore is leaking. Check the floorboard on the passanger side and check for the smeel of antifreeze in the car. Also see if you have a film of antifreeze on the windsheild when in defrost mode.
I would find a clean spot to park over after you have sufficiently run the car long enough to pressurize the cooling system and let it sit and run and observe under the car for a few minutes. You should be able to find the area where it is leaking. Make sure that the overflow is sealed tight.
if you say you havent repalced the lower radiator hose you should do so. and if you have the 2.0L you should ask the same question with as much detail as you did here but on SR20forum.com in the technical corner section they may know also.
snap on offer a detection kit which draws coolant vapor through a liquid. a colour change indicates exhaust gasses are present in it. this indicates a defective head gasket. it's also possiable that the cylinder head is cracked. which requires a different test
maybe you should check your overflow bottle, they can develop cracks that leak
check as many freeze plugs as possible , and make sure all hoses are secure and tight good luck
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