alexandery
New member
2004 Yam F225 no power after 3000 rpms BOGS DOWN BACKFIRES starts and idles perfect Have ran boat with external tank and fuel lines same problem have replaced engine fuel filter have replaced high pressure pump and cleaned the VST tank have replaced lo pressure pump have cleaned all fuel lines replaced all 6 injectors should the low pressure pump be on with engine rpms above 2500 rpms have tried pumping prime ball when problem occurs no difference would appreciate any help