Yes, technically speaking, you can start the engine without coolant. BUT... with no coolant in it, you take the risk of the engine overheating and permanently damaging parts in the engine that are critical for it to operate at all. I stress the importance of the coolant because of the inherant risk of having a false sense of security - i.e. "it's okay if I do this", especially since most people don't just it move in and out of the garage and the shut it off right away. They forget about it even just for a "moment" which turns into a few minutes. Before you know it, the engine is overheating and then you have to shut it down anyway to add the coolent you needed to add all along. If the damage is bad enough at that point, you're looking at replacing costly engine parts. So to avoid the reprecussions of being too lazy to do it right the first time, just put the coolent in it and be done with it. It's the best way to go.
If it's an older vehicle - no. But a newer vehicle might just be clever enough to monitor the coolant level and refuse the engine to be run empty.
A KX85 just needs regular green premixed engine coolant. To replace the coolant in the engine system, simply drain the current coolant and refill. There is no need to flush the system before replacing.
Replace the engine coolant sensor.
You don't need coolant if you aren't going to run it for more than 2-3 min. Ever see a radiator on a Top Fuel Dragster?
Just above the coolant thermostat on the passenger side of the engine.
If your heater core is LEAKING engine coolant so that your engine coolant level drops too low or the engine coolant is lost completely and causes your engine to overheat then your engine can be damaged beside the mess the leaking coolant makes inside your vehicle ( you might be able to just temporarily bypass the heater core so that no engine coolant is flowing through the heater core )
the engine coolant temperature senson is located just below the throttle body on the front of the engine
The coolant level switch on a 95 Achieva has a sticking problem. If you tap the coolant tank near the sensor the light will go out
The coolant temp. sensor could be bad....or the thermostat could be stuck shut.....there are a few things it could be actually
You don't need to mix it!! It mixes itself on engine start up,just make sure you have ratio correct!
probably just replace the coolant sensor
The plastic coolant reservoir on the fender feeds directly into the coolant system. Just add coolant to the reservoir and if you have drained the coolant or otherwise emptied the system, you may need to check the level in the reservoir after running the engine, or more accurately, after the engine has cooled. Once the coolant level has stabilized, just check it periodically to make certain that the coolant level never gets too low.