Troubleshooting Injection Pump Cessation A Comprehensive Guide

The Boating Forum - fuel pump not pumping fuel - Well I have a 1998 johnson 225 with a VRO fuel pump, I recently rebuild the pump with the two recommended ... My assumption is that there is some type of stuck metering valve or something not letting the pressurized fuel go to the injector lines. Pull the return line off top of pump and make sure you're getting fuel out. If there's clean fuel there, loosen the nut on one of the injection ... I just installed a mechanical pump on my 350, and nothing is pumping out of it, brand new output line, the filter is new as well and sits right before the ... The problem was the pump lost it's prime. Any air trapped in the lines or bowl would be pumped harmlessly back into the fuel tank through the ... Check for air in the line between the tank, and the pump. Pump will not work if air is in the fuel line. Chech for air leakes in the line, and ... 2- there is insufficient fuel going INTO the pump inlet.. ... #2- simply pull the inlet line off of the pump and let it drain into a bucket..& ... It requires an amount of hydraulic "head" to prime the check valves and then to pump liquid uphill to the carbs. This is a positive displacement diaphragm pump. - If the injection pump has a fuel solenoid, ensure that it is receiving power and functioning correctly. A faulty solenoid can prevent fuel ... Imho the pump needs to be assembled before fitting to the engine. Because you need to push the lever/foot up and keep it in position while ...