Mystery connection, don't know what plugs into this, have a look Options

[jackspratt]

Wondering what this would have plugged into it. Looks like it's a ground of some sort and looks stock? Anyone have a clue? 1973 914 2.0

[emerygt350]

I believe yellow are 1.7 injectors. Not sure how changeable the heads are but I would be careful until you know what is on what with this thing. If you ran a 1900 engine with 1700 injectors it's going to be very lean.
If you are getting pressure in the rail I would look to the injectors and dizzy first.

You can turn it over with an injector out to check if they are firing, just put it in a can with a paper towel etc.

It is possible they are all gummed up and not firing. Just don't light the car on fire trying. The injectors are cheap so just getting a new ones isn't a terrible idea if you think they might be gummed up. Not sure if I would buy a full set till I knew what I had underneath. Does anyone ever put 1.7 heads on a 2.0?


Pulling the distributor is easy, I would do it, and clean the advance/retard plate and clean up the trigger points/ check their condition. ECU rarely goes on these cars.

something else to think about is the pressure regulator if the fuel pressure is low.

[jackspratt]

I believe yellow are 1.7 injectors. Not sure how changeable the heads are but I would be careful until you know what is on what with this thing. If you ran a 1900 engine with 1700 injectors it's going to be very lean.
If you are getting pressure in the rail I would look to the injectors and dizzy first.

You can turn it over with an injector out to check if they are firing, just put it in a can with a paper towel etc.

It is possible they are all gummed up and not firing. Just don't light the car on fire trying. The injectors are cheap so just getting a new ones isn't a terrible idea if you think they might be gummed up. Not sure if I would buy a full set till I knew what I had underneath. Does anyone ever put 1.7 heads on a 2.0?


Pulling the distributor is easy, I would do it, and clean the advance/retard plate and clean up the trigger points/ check their condition. ECU rarely goes on these cars.

something else to think about is the pressure regulator if the fuel pressure is low.

Well, one side of the fuel regulator has gas but the outlet side to drivers side rails is bone dry. New regulator needed? And I think this whole thing is a 1.7 most likely.

[JamesM]

I believe yellow are 1.7 injectors. Not sure how changeable the heads are but I would be careful until you know what is on what with this thing. If you ran a 1900 engine with 1700 injectors it's going to be very lean.
If you are getting pressure in the rail I would look to the injectors and dizzy first.

You can turn it over with an injector out to check if they are firing, just put it in a can with a paper towel etc.

It is possible they are all gummed up and not firing. Just don't light the car on fire trying. The injectors are cheap so just getting a new ones isn't a terrible idea if you think they might be gummed up. Not sure if I would buy a full set till I knew what I had underneath. Does anyone ever put 1.7 heads on a 2.0?


Pulling the distributor is easy, I would do it, and clean the advance/retard plate and clean up the trigger points/ check their condition. ECU rarely goes on these cars.

something else to think about is the pressure regulator if the fuel pressure is low.

Well, one side of the fuel regulator has gas but the outlet side to drivers side rails is bone dry. New regulator needed? And I think this whole thing is a 1.7 most likely.

Check your other thread, pretty sure you are not plumbed correctly. The regulator goes AFTER the fuel rails, not before. Pump feeds the passenger side rail, over to the driver side rail, into the side port of the regulator and then back to the return line.