Firstfives.org

ok, figured out the reason for my crank no-start...plugged up injectors for sitting too long. rusted bad gas. I removed the injectors and had them
cleaned. They are now re-installed but somewhere along the way I lost track of a few of my injector harness connectors and need to ID the #4 and #5 connectors. There is one cable that is significantly longer than the other, an-d appears to have a blue-ish cast. Is there a diagram available to straighten me out? Thanks.


1980 BMW 635csi Euro
k jet tronic
dogleg 5 speed

Like this ?
https://www.autohausaz.com/search/produ ... %20Harness

Do I understand you question correctly:

You have all the connectors but you don't know which one is for the 4th and which is for the 5th injector? As your engine has bank injection this is easy to figure out. Look at the wiring and you'll see that the injectors are wired per three injectors. 135 and 246 are wired together.

Concering the color of one of the connectors I'd say you have one injector connector on a coolant temperature sensor. Usually the blue connector is for one of those and all the injector connectors are black. Unless some previous owner changed one.

So first take a look at this. (Also the blue connector is most likely also not wired to one of the injector banks.)

Regards,
Jan

On my 80 L jet the cold start injector high on the manifold is a light blue color. This is probably the connection with the long length.

DonT wrote:On my 80 L jet the cold start injector high on the manifold is a light blue color. This is probably the connection with the long length.

Sounds pretty plausible to me