wont start

[grog]

A modern EFI fuel pump, car or bike, pretty much all similar. Should have around 40 psi, deliver 750 ml in 30 secs, thats an accepted standard. Any further questions im sure i can answer.

[gsxmad]

Well lads just ran my fuel pump for 30 secs and it only pumped 700 ml. I may try cleaning the fuel pump one more time.

[T 24]

If the problem is just starting, it doesn't matter does it pump 200 or 700 or 1200 ml/30 sec.
The pressure matters, and it should be about 3 bar(43-44 psi)
I have to keep my base pressure in 2 bars due to some other mods, but it still will start.
If the pressure is too low, the engine will "kick back" while starting (that is my problem in cold weather)

[Beaker]

If the problem is just starting, it doesn't matter does it pump 200 or 700 or 1200 ml/30 sec.
The pressure matters, and it should be about 3 bar(43-44 psi)
I have to keep my base pressure in 2 bars due to some other mods, but it still will start.
If the pressure is too low, the engine will "kick back" while starting (that is my problem in cold weather)

...hence the pressure regulator check - mine was pumping fuel but not enough to kick it over. Re-attached the pressure regulator and fixed the issue.

[T 24]

Connect fuel pressure gauge to fuel line. If the fuel pressure is something else than solid 3 bars you have problem in your ragulator, pump or filters.

Check the pressure at first. If the pressure is OK, the starting problem isn't there. If it isn't OK, then you must check your regu, pump and filters.
And if your regulator(and injectors) are in good condition, it will keep 3 bars over an hour after the pump has stopped.
My American wonder regu(Begi 2025) will keep the pressure for a few seconds after the pump has stopped, so I must start on that short time when the fuel pump is running....

[T 24]

I made that pressure measuring with stock motor when I was looking after another running issue, and finally it was oxidation in ecu grounding.