> Possible blown headgasket. If there is coolant coming from
> the muffler and white smoke coming out of muffler as well, is
> that a sign of a blown headgasket?
That or a cracked head or block and possibly a bad intake manifold
gasket too. If gasket is blown it is usually from overheating and if
engine has been hot recently, you likely have a bad/warped head and