i have just recently fitted a new engine in my bravo hgt and have done everthing by the book the problem im now getting is that im not getting an earth to the injectors. any one got any ideas please.

mark clayton said:

i have just recently fitted a new engine in my bravo hgt and have done everthing by the book the problem im now getting is that im not getting an earth to the injectors. any one got any ideas please.

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you shouldnt be looking for an earth at the injectors, the earth is switched by the ECU so you are never going to see it.

there should be a constant +12V at the injectors and at the coil packs.

is the problem that you have no fuel/spark?

did you change the Cam Phase sensor before putting the engine in? have you checked the resistance of the crank sensor? (should be around 700ohms between pins 1 & 3 IIRC)

Ry

mark clayton said:

thank you for your reply. the problem is im not getting any fuel through the injectors i do have a spark and everything else is as it should be. is my problem the ecu its self?

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is the fuel pump priming? is the constant +12V at the injectors when the ignition is on?

if you have a spark it sounds as if you arnt getting fuel through or you have no compression, have you checked compression?

i would very much doubt the ECU is at fault as you have said it's sparking.

Ry

thank you for the reply again. right here go"s im gettin fuel up to the fuel rail so i would asume that the fuel pump is primed as there is pressure in the fuel rail. and i have a constant live feed to the injectors just am not getting any fuel pushed through. being a total novice as have never done this before im not sure about how i would check the compression. your help on this would be a real great help

can i ask what happened to the old engine?

you will need a compression tester to check the compression, you can get them at most motorfactors for £10-15.

are your spark plugs wet after attempting to fire the engine? is the a smell of petrol from the cylinders?

Ry