Re: fuel system question
Just how would GM know the percentage of E had increased in this motor?<br /><br /><br />An oil analysis and a look at the crank and rod bearings would give them a pretty good clue.<br /><br />Would the same sensor not also be able to adjust the fuel flow, etc.?<br /><br /><br />Fuel flow a can only be ajusted within the physical limits of the injectors. Just because the ECM call for X amount of fuel flow doesn't mean the fuel injectors nozzles are sized big enough to flow X amount. Or that the intake manifold, intake ports, throttle body, etc are big enough to supply enough air to burn the increased fuel.
Just how would GM know the percentage of E had increased in this motor?<br /><br /><br />An oil analysis and a look at the crank and rod bearings would give them a pretty good clue.<br /><br />Would the same sensor not also be able to adjust the fuel flow, etc.?<br /><br /><br />Fuel flow a can only be ajusted within the physical limits of the injectors. Just because the ECM call for X amount of fuel flow doesn't mean the fuel injectors nozzles are sized big enough to flow X amount. Or that the intake manifold, intake ports, throttle body, etc are big enough to supply enough air to burn the increased fuel.
You didn't really think it would stop with a simple answer did you? <br /><br />Engines that are designed for E85 run far more complex ECU's than is fitted to your boat engine. As to does 99% of cars and trucks on the road! Your ECU has pre-set fuel and ignition maps and does little to no adjustments on the fly. It controls hot and cold start, warm up and will lean cruise under the right conditions. It will have no idea that youre using E85 and will not adjust fuel rate to compensate. Until boats are subject to the same smog laws as cars they will not bother fitting the smarter ECU's along with oxy sensors, knock sensors, mass air flow, air temp, exhaust temp and the list goes on
.. and the price goes through the roof!<br /><br />Enjoy your boat, drink some beer at the end of the day and leave that alt fuel for the vehicles that are designed for it!