Isuzu Repair: 99 rodeo, head gasket, tiny bubbles

Question
I have a 99 rodeo 3.2 v6, I've been told that the left hand cylinder heads leak water after around the 150000k mark fouling the spark plug.  They say it's due to poor cylinder head casting or mouldings, is this true?

Answer
Well yes somewhat Nat. The design was from a combination of G.M., Honda, and Isuzu. The cylinder head could be cracked/warped. Or your head gasket could be blown. I would start the car when cool, wait for the water level to drop in the radiator, and if you see tiny bubbles or what seems like the anti-freeze is being foamed then you have one of these. Mileage reallly has nothing to do with it. You might want to check both sides and have your head dye-tested beacause it is aluminum and it takes a special dye to test it.