Alright, this might be a little long, so i apologize.
I have a 2008 hyundai tiburon with a 2.7l engine that’s leaking coolant from the bottom weep hole.
Last week I was running my car, but it was idling as I was at a red stop light. I noticed that my car had started to overheat, so i pulled over and shut it down. It cooled off pretty quickly, and i made it home without any further problems. The next morning I had a doctors appointment, and within ten minutes of driving my car started to overheat again. This time I hadn’t idled at all. It started as I was cruising down the road at 50 mph and the check engine light popped on. I had to cancel my appointment, so I went to the local advanced auto and had them hook up a code reader to it.
Two cylinders started to misfire as a result of this overheating problem.The only time the bottom weep hole leaks is when I fill the radiator from the cap to the top. Every time I do this, the engine has been cool, so it isn’t expanding. Is this a sign that the water pump is bad? Is there any chance that the thermostat could have caused the initial overheating problem while it was idling which then caused a water pump failure?
I also want to point out that when I stopped at advanced auto after the initial overheat, the reservoir was low, but not empty. I topped it off at that point.
Are the misfires possibly just a result of the coolant spraying onto the spark plugs?
I dont know a whole lot of about cars, but I do know what I think to be enough to get by… I cant figure this out and I’m not in the position to take it to a shop. Any help would be wonderful!