Fuel pump pressure surging
 

This is with fp and gnd jumped in the diagnostic port and just ign on.

Is my bosch pump dead?

disclaimer: I know nothing

can you hear the pump surging?
could it be the regulator?

Hi,

Yes i can hear the pump surging, sorry i had uploaded a video showing my fpr gauge.

Its set for 40psi but surging between 30 - 50 on just ign with the fuel pump jumped.

It could be pressure reg yes but i guess I'll have to change one to prove the other.
Also i had read that surging that much is unlikely to be the reg as its too big a margin

https://youtu.be/EXbmDMDUqxk

It was the pump, changed it and the pressure is rock solid.

Thanks for all the help and useful input, (not you neit_jnf, your awesome!!!)

This forum has took a dive recently tbh guys, covid related maybe