Bosch pump whining sound

[owcarps13]

Originally Posted by c-los13

I had the same issue
My fuel tank was filled with rust clogging the fuel sock therefore making the fuel pump work extra hard to pick up fuel
I had my fuel tank cleaned and coated. it still gets kinda loud but at least it runs like its supposed to
Im running walbro btw
Good luck

My 180 was build from scratch so tank was cleaned before it went on a car. However I will make some checks.

Little update. I have replaced fuel pump and fuel filter for new one. After 60 miles pump is whining again and no power. I have connected pump directly to battery same situation. When we put camera in to the tank pump is cover with petrol. We have removed fuel pressure regulator. Whining stoped but after 10 minutes of driving pump whines again and no power.

It seems that our ideas are out. Any tips guys?