Originally Posted by oliverr87

Hi, I have a 1987 Nissan Pickup truck with the Z24 engine 4 cylinder, fuel injected.

My uncle came home with it, and he was going to replace the brake pistons because the brake master cylinder (not the brake booster) was leaking, and the pistons were worn. So he replaced them, but now when the car starts up, white smoke pours out of the exhaust. Any ideas? I only see one hose going from the booster to the engine...did brake fluid get in there somehow? What is that hose for? It doesn't smell like oil...in fact it doesn't have much odor at all. It smells BARELY bitter...but its hard to smell it. Just pure white smoke...the head isn't leaking any oil, no coolant leaking, and the car was working fine before replacing those pistons. Anybody have ideas?