I have a 95.5 Isuzu Rodeo w/3.2L and a massive coolant leak on top of the engine somewhere. Engine oil is fine, no chocolate milkshake. Right now I have both the common chamber and lower intake removed. There is a major puddle sitting on top of the engine. I cleaned the top of as much as possible, filled the system and found the same puddle a few hours later without even running the vehicle. It looks as though the leak may be coming from one of two crossover pipes. I am not sure how to diagnose which needs to be replaced and where to find replacement parts. Any suggestions?
Thanks, Groovy

I highly recommend you change both o-rings and the hoses in the back coming off the crossover pipe. Also the two gaskets where the crossover pipe goes into the block. If you don't, they will blow when you replace the o-rings and the systems runs under pressure again. And it's a cheap repair since you already have the plenum off.

Where Can I get the orings from? There are no Isuzu dealerships around us anymore?

Where Can I get the orings from? There are no Isuzu dealerships around us anymore? call this dealer in missouri toll free. ask for Merlin. get free shipping (to your door directly from the isuzu distribution warehouse( and ask for 'internet discount'. no minimum afaik.

http://isuzu.stcharlesauto.com/Department-Parts.aspx

//bc