I bought the same ones and they came to me dry in a bag. I put em in oil and actuated them and some air bubbles came out. They should prime up while the engine is idling but don't rev it when you crank it. Remember those open your valves so it may run a little rough til they pump up. I recommend you pull the fuel injector harness. It connects at the firewall, follow the injectors up to 2 plugs. One is for dist other is for injectors. dont try to mess with individual connectors since theyre hard to get to and will break when touched. Then crank it over about 30 secs (or til the oil light goes out) and that should prime the oil system. That's what Mitsubishi engineers and training center instructors tell you to do when you install or rebuild an engine, crank it without fuel for 30 secs or so to prime it.