Injector flow test FAIL ?, Troubleshooting lean condition Options

[jim-c]

Im working on my recent 914 purchase. 2.0L engine. D-Jet ECU . Intially the engine would fire right up and idle smooth at 1000 rpm. Unfortunately it didn’t want to rev above idle. I could quick pump the throttle and get it to rev but it was undrivable.

I have an AFR gauge and it shows dead lean when i try to rev.
I did a flow test on two injectors ( all 4 are new ) . I have 28lbs of FP .
Full throttle and crank for 15 seconds yields 2cc per injector. Supposed to be 7 ish.

Any ideas ?

Nice new harness, MPS holds vacuum and has correct impedance readings.
The balance of sensors check out okay with test procedure. Fuel pump holds 28 lbs steady and pumped a quart of gas within 30 seconds .

[rhodyguy]

The fuel sock lives in the bottom of the tank. If not fully fouled, as demand increases delivery decreases. It will suck flat. With a drained tank you can look down the fill opening with a flashlight to see it's condition. The sock should be standing up. Not flattened and laying down. Pumping the tank empty is easy with facet pump, some lengths of fuel line, a battery and a catch container. A BIG catch container.

[rjames]

The fuel sock lives in the bottom of the tank. If not fully fouled, as demand increases delivery decreases. It will suck flat. With a drained tank you can look down the fill opening with a flashlight to see it's condition. The sock should be standing up. Not flattened and laying down. Pumping the tank empty is easy with facet pump, some lengths of fuel line, a battery and a catch container. A BIG catch container.

You can use a jumper on the relay board to keep the fuel pump running in the car with the ignition on and engine off. When I drained my tank I just pumped the remaining gas into the tank of another vehicle. Just make sure to shut off the pump when the fuel is gone so the pump doesn't burn out.