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> Injector flow test FAIL ?, Troubleshooting lean condition
jim-c
post Jan 9 2022, 07:32 PM
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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 .
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jim-c   Injector flow test FAIL ?   Jan 9 2022, 07:32 PM
JeffBowlsby   Do you mean resistance, or inductance? Has the MP...   Jan 9 2022, 09:37 PM
jim-c   Do you mean resistance, or inductance? Has the M...   Jan 9 2022, 09:52 PM
JeffBowlsby   Too many variables here now. An adjusted MPS, new...   Jan 9 2022, 11:45 PM
emerygt350   Since you have a 123 and the MPS really can be out...   Jan 10 2022, 05:56 AM
jim-c   Since you have a 123 and the MPS really can be ou...   Jan 10 2022, 10:51 AM
rjames   Since you have a 123 and the MPS really can be o...   Jan 10 2022, 11:39 AM
jim-c   Thanks for the replies. I flow tested all 4 inje...   Jan 10 2022, 09:21 AM
emerygt350   It's a super easy rebuild. I think I got mine...   Jan 10 2022, 12:00 PM
emerygt350   It's a super easy rebuild. I think I got min...   Jan 10 2022, 12:03 PM
JeffBowlsby   I am struggling to understand the low fuel flow an...   Jan 10 2022, 12:07 PM
jim-c   I am struggling to understand the low fuel flow a...   Jan 10 2022, 12:36 PM
rhodyguy   The fuel sock lives in the bottom of the tank. If ...   Jan 10 2022, 12:45 PM
rjames   The fuel sock lives in the bottom of the tank. If...   Jan 10 2022, 12:54 PM
jim-c   The fuel sock lives in the bottom of the tank. If...   Jan 11 2022, 10:55 AM
914Mels   Im working on my recent 914 purchase. 2.0L engine...   Jan 10 2022, 01:31 PM
jim-c   Is the manifold pressure sensor hose clear? Are yo...   Jan 11 2022, 10:57 AM
jim-c   Progress update . Tank sock filter was vertical. ...   Jan 14 2022, 11:42 AM
emerygt350   Progress update . Tank sock filter was vertical....   Jan 14 2022, 01:35 PM
914sgofast2   Low idle vacuum is likely a timing problem or undi...   Jan 14 2022, 08:03 PM
emerygt350   Low idle vacuum is likely a timing problem or und...   Jan 14 2022, 08:42 PM
jim-c   Here’s an update /solution for my problem. I pul...   Jan 16 2022, 05:54 PM
StarBear   Here’s an update /solution for my problem. I pu...   Jan 16 2022, 06:01 PM
emerygt350   That is great. Post the link for the tester!   Jan 16 2022, 06:22 PM


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