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 .

[JeffBowlsby]

I am struggling to understand the low fuel flow and how it may be related to the lean condition.

Did you change the fuel lines under the tank recently? Is there a kink in the lines? Does your FP drop or is it steady? Is the filter sock in the tank dirty? Clogged fuel filter?

[jim-c]

I am struggling to understand the low fuel flow and how it may be related to the lean condition.

Did you change the fuel lines under the tank recently? Is there a kink in the lines? Does your FP drop or is it steady? Is the filter sock in the tank dirty? Clogged fuel filter?

I have not removed tank to check it out. Yet.

The FP gauge is rock steady. Im going to pull the return line and see how much gas the FP delivers. I did a quick test yesterday and it filled a quart bottle in 15 seconds.
The pump and filter are not original but new. I didn't know about a sock filtering the tank.
Can I assume a flow test will determine the state of all these items ?