E21 sloww build thread

[jlaffo91]

not too sure about that blue connector as my engine is in pieces. as for the line, i think mine was for the charcoal canister going back to the fuel tank.

[thebigkg]

thank you

[apexilude]

resemble the coolant temp sensors connectors on the m30. do you have two sensors on the front of the motor?

[TheNeek]

one is for the lambda valve. There should be a pulse style injector (yes just one) in the fuel stream that enriches or leans out the fuel mixture based on the what the 02 sensor says. This valve or injector seems to be missing from your car. I see the air bypass valve, but not the lambda valve. I believe that blue one goes to the lambda valve.

The other could be for the warm up regulator (WUR) which is under the manifold and mounted directly to the block forward of the starter. I think the brown one goes there.

edit -- and that line under the radiator is for the charcoal canister.

double edit -- it was typical for techs to disconnect fuel system components that weren't neccesary for the running of K-Jet to try and fix cold starting issues, or emissions problems.

[thebigkg]

thanks for the help

[amichaels]

so cool