manifold earth

[Duduglanza]

Can anyone tell me what are the earths on the side of the manifold for?

[5e colin]

there 100% needed without them you will get running isseues

[daniel_g]

For injectors possibly, not 100% sure

[Duduglanza]

I know it wont start without it & they are nessecery... just wondering what are they connected too.. thanks guys

[Stu]

They connect to various things - injectors and the ecu are the main ones. The earths to the ecu are called power earths which carry load current, the ecu then supplies sensors earth to the sensors which it monitors for interference against the power earths which is why its critical that important sensors like the map sensor and water temp sensor are connected to the sensor earth from the ecu and not direct to the head.

[Duduglanza]

Thanks for the info

[Stu]

No worries!