Hello! I have tried the forums and not yet had success and found this platform so here goes.
EU spec M pump on a 4spd manual car (RHD imported from Scotland). The car starts and idles damn near perfect...but once you engage the throttle the idle surges up and down. I have used the idle adjustment screw and believe it is now not functioning properly for some reason.
Here are some pictures and videos of the pump itself and the idle surging:
Not sure why there are metal shavings below the nut...
I have a video of the engine 'doing' this and it is here.
Pump specs on the side of the pump:
PES4M55C320RS107
011124176716
0400074981
6160705401ER0001
Thoughts? I do not have all the specs for this pump memorized, nor do I know what everything is called...but from my research this seems to be something with the governor?
This is one of the last things I want to sort out on this car so I can drive it regularly.
Thanks for any input