The engine would lose power intermitently (and still work at low speeds but not 2000 rpm and above) and at the same time as power loss, the two stage fuel pump got very noisey. When the pump noise went away, the power returned. The same is happening with the new pump I installed. I checked the...
I am working on a fuel injected GXI Volvo motor whose fuel pump was whining badly. I replaced the pump assembly (low and high pressure pumps) and noticed there are two very small hoses that go to the coolant system. I suspect that they cool the pump but am not sure.
What do these hoses do and...
