Okay, so here it is, I bought a 2001 Cherokee with a "blown head gasket" about 2 yrs ago, actually it was a cracked head. I knew this and knew they were notorious for this. I had a mechanic weld it for me which lasted almost 2 yrs. Now it has cracked again so I am intending on changing it out with a cylinder head off a '97/'98,(having it checked over at a machine shop first). What I am needing to know is how do I effectively clean all the sludge out of the engine? It has been sitting for 4 days since I discover the actual problem. I have read everything from trans fluid to diesel fuel in other forums but I figure I would ask other enthusiasts, thoughts?


PS: I will probably have other questions to come, first time doing something of this caliber on my own.