Coolant issue. PLEASE HELP!!
Thread Starter
Staging Lane
Joined: Jan 2013
Posts: 90
Likes: 0
From: Memphis, TN
Coolant issue. PLEASE HELP!! Ok I have a 1998 z28 and everytime i fiil it with coolant i lose coolant. I can see coolant on the ground but i cant determine where its coming. Ive already changed the radiator and the thermostat.
TECH Apprentice
Joined: Apr 2011
Posts: 375
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From: Bahrain
keep the hood open and see where it's leaking from,
i'm guessing the heater hoses or what ever they are called, also check the hoses to the water pump.
if that doesn't help check from underneath the car although that won't help much either.
i'm guessing the heater hoses or what ever they are called, also check the hoses to the water pump.
if that doesn't help check from underneath the car although that won't help much either.
Put the front end on ramps and start the engine.....let it get up to operating temp, then shut it off. Then wait 10 minutes and start looking for leaks with a flashlight.
Don't start changing gaskets or anything else and tossing MORE money in the trash can trying to chase the problem.
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Don't start changing gaskets or anything else and tossing MORE money in the trash can trying to chase the problem.
.
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You can take it somewhere or buy the tool yourself. I bought mine from my Snap On guy but I am sure other places sell them.
There is only so many places coolant can leak on these cars.
When the car leaks, where is it at under the car? Up front towards the radiator, in the middle?
Another thing you can do is put dye in the coolant system, drive it for a while then look for the leak with a black light and the UV glasses.
There is only so many places coolant can leak on these cars.
When the car leaks, where is it at under the car? Up front towards the radiator, in the middle?
Another thing you can do is put dye in the coolant system, drive it for a while then look for the leak with a black light and the UV glasses.
Guys.....be very careful when pressure testing the cooling system. When you start make sure the RADIATOR is 100% topped off........not the overflow tank......the radiator. This way you can tell if any coolant was lost when you remove the tester cap.
If there is coolant missing but you saw nothing dripping onto the ground or elsewhere......you may have filled a cylinder with coolant through a leak in one of the head gaskets. If you did and you start the engine you could lose the engine by hydra-locking it. Then you'll be pulling the engine to replace broken internal parts.
If you have missing coolant, but no external evidence.....you better pull all 8 spark plugs to see if a cylinder is filled with coolant. Turn the engine over with the plugs removed for about 5 seconds to spit any coolant out, that may have filled a cylinder.
it's happened before.....it will happen again.....
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If there is coolant missing but you saw nothing dripping onto the ground or elsewhere......you may have filled a cylinder with coolant through a leak in one of the head gaskets. If you did and you start the engine you could lose the engine by hydra-locking it. Then you'll be pulling the engine to replace broken internal parts.
If you have missing coolant, but no external evidence.....you better pull all 8 spark plugs to see if a cylinder is filled with coolant. Turn the engine over with the plugs removed for about 5 seconds to spit any coolant out, that may have filled a cylinder.
it's happened before.....it will happen again.....
.
If that's what it is. Could be leaking from the Low Coolant sensor, or if you have an automatic tranny they sometimes start leaking from the gaskets that seal the tranny fluid cooler that's inside the passengers side plastic tank. There's two ports for the cooler on the passengers side back of the radiator. Possibly a loose radiator hose clamp on that side....the lower radiator hose.
You just have to get under the car, put the front up on ramps......get the engine up to operating temp and start looking for the leak.
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