My coolant resevoir is full but top coolant hose is empty. Is there a bleeder system?
Here is a basic description of cooling system, the top hose going to engine is the supply hose the bottom hose is the return hose. On your overflow coolant reservoir there is a lower cold level mark and a hot level mark above it also there is an overflow drain spout several inches above hot level mark to relieve pressure if system is overfilled. As to a bleeder system, bleeders purge air from a system to allowed it to become primed (pressure built up) generally on hydraulic systems like brakes or pneumatic systems like a diaphram pump for example. the only drain available is the petcock valve at the bottom of the radiator used to drain coolant. Now to your top hose being empty, you can remove top hose to engine have a garden hose running into radiator and if radiator cores are not stopped up water should flow freely from hose if not radiator is clogged. If you have water flow now you can pressure test system it should hold between 15-18lbs pressure constantly otherwise check all hoses/clamps etc (if leaks were present before replace faulty component/s) your vehicles water pump circulates coolant and is what pressurizes cooling system. A faulty thermostat will also restrict coolant from entering the engines coolant passageways if it doesn't open and your vehicle would overheat soon after, but you should still have coolant in upper hose when engine is running regardless. If you can add other info like your vehicle is running hot or coolant light coming on I can narrow it down for you.
Jan 07, 2011 |
1996 Pontiac Sunfire