fuel pump straining ?

[lord14]

i have an inline pump witha 3bar reg on a 1.8t engine , and for some reason its all of a sudden started straining , ive put a guage before the rail to test fuel pressure and its at 4 bar , its just when i connect to the rail it starts straining really bad and then melts the fuses and makes the wire hot

[AudiA8Quattro]

Blocked fuel filter?

[lord14]

fuel filter is fine , ive even tried it without it , and still no luck

[AudiA8Quattro]

If there is no blockage then i would think the pump itself is at fault.
The pump could be ok until its properly under load.
Maybe try a cheap second hand unit?

[lord14]

think ill have to mate , thanks alot

[Wayne]

Are all the fuel lines clear and unkinked etc.

[lord14]

yeh all fine ,