Coolant leaking out before muffler flange!!
My 2003 jeep liberty has a random misfire code pop up. Said it was cylinder 3 and4, however it has changed to just odd sides before as well. I noticed coolant loss. Replaced overflow tank, because it had minor leak. Started it up after and noticed coolant leaking out or near the flange that connects to the muffler. Billowing out white smoke like crazy. Im thinking i have a bad head or head gasket. Is it possible i could have cracked the block? I did have the water pump go and i drove it for about 3-7 miles before i could pull over, since temp gauge never moved. Drove good for 3 months before any coolant loss. Im thinking i cracked the head and it just took a while for it to expand and cause any real problems. I am taking to a reputal mechanic to have a compression test and or diagnostic test done this week. Any ideas? would be greatly appreciated, Im gonna replace the head myself if thats what it is, doesnt look to be that tough of a job.
If you are getting a lot of white smoke, coolant loss, and actually seeing coolant and not water dripping from the exhaust, then you likely have coolant getting into the cylinders. The actual cause can be many things, but typically its a faulty head gasket, warped head, cracked head, or all the above. The engine blocks tend to be more robust. If the engine has been ran hotter than normal(doesn't mean in the red zone in all cases), then that may be the issue. You'll need to pull the heads, have them checked, etc. If the head gasket is bad, or the heads are warped and repairable(if), you will want the machine shop to redo all the valve seats at that time as well as mill the head to fix the warpage. If it's too warped you'll need a new head.
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