I have a 97 Ranger R82 Sport with a Johnson 150hp Fast Strike with this fuel starvation issue. My previous Ranger developed it just before I sold it and the current owner still has the problem. I've been combing through these forums in search of an answer. This morning I picked up my R82 from the local mechanic and he removed the anti-siphon valve completely. He said I'd be surprised to know how many boats run without one. Mine ran fantastic once I was able to get it up on plane probably due to the fuel pump, but the primer bulb would collapse and the engine would starve out. I can say the boat no longer has the starvation problems and it runs like new again. Worth every penny, but would have been better if I knew this was the problem. Everything else (compression, electrical, etc.) checked out great. Hope this helps.
