ORIGINAL: ryanjef

So I was out flying my Hangar 9 Saratoga the other day, it has a saito 82 up front and I have put about 40 trouble free flights on it. Engine has run like a champ but I had some problems that just arose the other day. I have been running Morgan Omega 15% with a little extra castor for the life of the engine. I got a gallon of Morgan Pro pattern 20/20 to run in my OS 70 and it seemed to like it very much. I just tried it in the saito and had a curious problem arise. I went ahead and retuned the high speed with a tach on the first tank of the new fuel and everything seemed fine. Flew for about 5 minutes and while doing a touch and go the engine quit. I restarted it in the pits and noticed bubbles in the fuel line. I ran a few more tanks through it and it would do the same thing every time. It would run great for 4-5 minutes and then lean out and quit. Bubbles would start showing up in the fuel. I havent had time to look over the airplane yet but I was wondering if anybody has any suggestions, things to look for? I don't think the new fuel is the problem, maybe a small hole in one of the fuel lines? Any help is appreciated.

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