Hi, I have a motor exactly like the one in this video, and it shows me a fault that is burning the main fuse, I have changed it several times and it will die again after just one use Also the engine does not exceed 4,500 rpm, I have already replaced spark plugs, coils and cleaned the carburetor I hope you can help me, thanks for your time bull's marine
Any idea what the fuel burn at certain rpms? I got a the same motor (but without the bigfoot gear case) on a 15 ft whaler and can correlate speed to rpm but have no idea what I'm burning so I'm just wondering so I can determine where cruise is most efficient
Each boat and each engine is different, even exact same models of boat and engine set up , weight in the boat determines which prop to use . The idea is to prop the engine so that when you have all the gear and passengers you would normally carry , that the engine can turn its recommended OEM ( original engine manufacturer ) RPM ( Revolution per minute ) at WOT ( wide open throttle) trimmed to its point of cavitation , or better known as prop blow out . So in theory a 19 pitch prop will travel 19 inches through the water with one Revolution of the prop . Slippage is the exact distance or loss of distance that it will travel . The only way to know for positive is to have a Technicians digital tachometer/timing light on board under way during normal operation.
How come it's so smokey? I've got one and it barely smokes at all? When u say u pre mixed fuel at 25:1 ,aren't they self mixing? I just top mine up with quicksilver 2stroke oil then clean fuel.
MalcoDude Well , you are right , it is smoking excessively for a very good reason .Because of the conditions in which it is being run [ high rpm under a dyno load ] I want as much oil as possible to perform this test . It is an oil injected engine , and depending on throttle position , it will feed somewhere between 100 to 1 [idle ] and 50 to 1 [ wide open throttle ] mixing it into the fuel supply before it reaches the carburetors . I also hooked a remote fuel tank that was premixed at 25 to 1 . I did this to cut down on the amount of stress and friction a dyno provides the engine under load . Commercial engines run at a 25 to 1 fuel/oil ratio where as normal conditions call for at least 50 to 1 . By running a heavier oil mixture I am simply providing the engine with a lot of extra lubricant while it is running at a much greatly reduced cooling supply [ 500 gallon test tank] which heats up much quicker than a lake or river . Thanks for watching the video , I hope I have answered your thoughts on it's subject material .If you ever need technical support for your engine please call 336-413-8882 and ask for Bull..
Mercury Marine goes by generation in serial numbers, so as to its exact manufacturer date , without that , I cant be certain a 3 cylinder 60 hp bigfoot was manufactured in 99. However, yes , maintenance is key to dependability, the two stroke 60 hp bigfoot is relatively easy to maintain, it needs a visit to an authorized Certified technician twice a year , spring check and Winterizing. This particular series of engines love lots of fuel and oil , so the offset cost 2 stroke versus 4 stroke is almost the same . 4 strokes have much higher costs in maintaining yet much more fuel efficient. Please feel free to call me anytime at 336-413-8882 Mercury Marine University Certified Technician number NC2315 . Thank you and have a blessed day
TCW 3 has additives in it to prevent ring sticking and carbon build up. However, I highly recommend running quick tune which is a higher dose of those additives, injecting directly into the engine while it runs . OMC calls it carbon guard in an injector spray can . I also highly recommend letting a trained professional doing it , because to do it properly you will have carbs or intake plenum open to the environment during the procedure.
Forgive any typos or misunderstanding. My Mercury Marine University Tech ID certification number is NC2315 . Please feel free to call me anytime at 336-413-8882
