help 0814D vairio 1999

[mal haviland]

Hi all,
need help with my bus, I have just had engine out replaced cam followers, replaced the engine, Now when it starts it only runs on the first 2 cylinders,if you crack the injector on any of these 2 the engine will stop,the thing is I took the multi pin plug off the side of the engine,wiped it and replaced it, then the engine ran faster and when cracking any of the 4 injectors it made no difference to the running of the motor, (still ran rough )but the throttle was unresponsive,when removing the multi pin plug and replacing it the motor went back to running on the front 2 cylinders and the throttle was responsive again,all the faults were cleared on ECU, a guy reckons that 2&3 fuel pumps need replacing,but they are pushing out loads of fuel.
Any help would be great
thanks Mal

 

[LostKiwi]

When you crack the other injectors do you get fuel?

 

[mal haviland]

When you crack the other injectors do you get fuel?

Hi, yes plenty of fuel

 

[LostKiwi]

Have you done a compression test?

 

[mal haviland]

Hi,
plenty of compression, new gasket,
I am leaning towards engine management a sensor, but I don't know

 

[mal haviland]

Hi, what do the electrical contacts on the top of pump do, as the pump is mechanical?