Dear folks
Does any one of you know reliably what should be the normal fuel pressure of our Threewheelers measured at the testing connector near the right hand cylinder?
Or did one of you messure the pressure at a vehicle which is running as intended?
Since about 200 miles I am facing severe problems with my engine.
Lots of errors present in my ECU (P0170, P0173, P0105, P0108, ....)
If you open the trottle by more than estimated 10% the engine is dying, if you do not release the pedal, which seems to be caused by a to lean mixture. I am assuming that the enriching when opening the throttle is not working properly.
Vacuum/barometric sensor was swapped against new ones for testing purposes, but no effect, neither on ECU nor on engine behaviour. Intake section check for air leaks, no findings identifyed. Fuel pressure on the test-valve showing 1,5-1,8 bar / 22-26 PSI.
IMHO this seems to low to allow the injectors to create a proper spray picture and might be the reason for a restricted flow rate rsulting in to lean mixture.
Is there any advice, what could by checked/measured directly at the fuel pump (voltage, resistance, ...)?
Checked the crank pulley of the beltdrive as well. It didn't come loose so far, so the cam timing should be OK.
Wiring checked, seems to be in proper shape, connectors in ideal shape, no visible damages to the looming.
I hope I am not facing an dying ECU.
Last remark:
The reported effect developed more and more significantly over the last 600
Km, first popping in above 75% throttle once in a while, now drivable between 0 and 10% load and rpm range 3-4 thousend.
Logged so far 8.000km
