Toyota Repair Problems? Ask a Mechanic for Answers ASAP
Do you have the thread that you're referring to? Do you have a code reader to see if there any malfunction code computer?
Can you give me as much detail as possible about the no start condition? Did you check for ignition spark? Does the engine sound like it's cranking over normally? Do you have any way to check for fuel pressure? When you turn the key to the on position is the yellow check engine light illuminated?
Let me know how things go at the of the belt is installed make sure the battery is fully charged the belt off for a while the battery could be low on charge. Then you can check for ignition spark simply by removing one of the ignition coils plug it back in and put a screwdriver in the end and see if it will spark from the shank to any metal surface on top of the engine while someone turns it over. Also confirm if the check engine light is on with the key in the on position. I recommend that everybody have a code reader you can purchase one from Amazon prime for less than $60 I can recommend a good one if you're interested. It will save you hundreds of dollars in diagnostic fees.
Let me know. here is the code reader I mentioned.
At this point you really need to obtain a code reader to see if there any malfunction codes set in the engine control computer. If there is a problem with one of the sensors it will cause a no spark condition potentially. You also need to remove the spark plugs and see if there contaminated with fuel and ideally run a compression test the compression should be at 170 PSI.
Based on your description it sounds like the water pump may have gone bad causing it to overheat the fact that it cranks over unusually fast means there's no compression it probably is a blown head gasket and the cylinder head may be damaged. It might be cheaper to get a used engine at this point depending on how bad the damage is.