Originally Posted by Mr Mastercraft
I have read all the info on this subject..very good info!! my question is I have a 2007 x-15, and I am having a lot of trouble getting my engine to start. I have replaced the fuel pump with a airtech as suggested on 1 of the forums. The boat started but not without the aid of a spray of easy start to the carb. So I went to a boat dealership and asked the mechanic for his thoughts what could be the problem and he told me the fuel pump..so I bought a pump from him that he said he has used in a few mastercrafts and never had a prob. Well needless to say I have so I am back to square 1..this is what happens when you spray the easy start into carb it fires up and runs no probs, leave it for an hour and it will not start with out the aid of the spray...any ideas on what the prob could be would be very much appreciated. Thanks
Sounds to me like your check valve may not be holding the pressure once you stop running. I would get a fuel pressure gauge (around 35 bucks). You can get at local auto parts or Amazon. Check your pressure it should be 50 to 60 psi I believe. It connects to the shrader valve on the fuel rail. Real easy to do.
I would recommend doing some diagnostics rather than just replacing stuff.
Also you can leave it hooked up and see what pressure does at different rpms before starting after starting etc
Gauge from amazon
Actron CP7818 Fuel Pressure Tester Kit