I need some help. My 84 242 somehow got water in the tank and after we replaced both pumps, filter and all injectors my main fuel pump would start to whine after a few days and eventually fail. We're now on the 3rd set of both and just yesterday the main has started to whine loudly again although at this point it hasn't failed. I did replace both relays and noticed today that after the car starts the fuel pump relay vibrates slightly, don't know if that's normal. Would really appreciate some tips/help in troubleshooting to find the problem rather than replace the pump(s) again. Thanks, Ralph