My boat is a 1978 Columbia 8.3. I've been boating only 3 years now. The engine is a Universal M4-30. The injector
pump is not pumping. Am trying to find specs. online. Everyone says to have an expert rebuild a bad
pump, it's too difficult for an amateur. I have the
pump off the engine now and pretty much have to
repair it myself due to financial considerations. Does anyone know anything about this
pump? Where to find schematics if nothing else? Would be very grateful for any info. Thanks.