I am working on a 2002 Montero Limited, 3.5. I just put on a new water pump, and timing belt, idler pulley, and tensioner pulley. I reassebled everything, and on startup, had a huge oil leak. It appeared to come from the crank seal area, or somewhere in the lower engine area. Seems to only leak under pressure. Now that everything is apart, I cannot locate the leak. Any great ideas?

 

check around the tensioner

 

i've got a 97. dont know if its the same but my oil filter and oil sender unit are right there maybe one got damaged during R&R

 

Double check to make sure that all the bolts were put back in place.