No start after swap

[jlduster]

Swapped 95 sfi motor into 92 mfi z34. Per forum ignored extra crank/cam sensors and used maf from 92 motor. Used 92 harness and computer. 92 ran well but knocked; 95 was from running car. Rechecked all connections. Getting fuel, but when I grounded plug wire with spare plug got no spark. I need to get this car running. PLEASE HELP! Thanks.

[patgizz]

i'll say check the wiring from the crank sensor to the ignition module. good chance it got pinched or cut while swapping.

[v6h.o.]

check your grounds!

[jlduster]

no start

Found part of problem. Switched plug for crank sensor and plug at right side axle housing (both were ppl/ylw). After swapping back, got spark, pulled front plugs, only #6 wet. Still no start, but sounds like its trying. Could motor br flooded from trying to start it so long? Battery died, so I'll try again tomorrow. Any suggestions? Thanks.

[jlduster]

still trying

Fuel pump is priming. Fuel pressure 40# at schrader valve. Sounds like no fuel to injectors. #6 plug still getting fuel, 2 & 4 bone dry.Tried starting fluid and it started momentarily, then caught fire...(too much ether I guess). I am assuming the ignition system is o.k. now after switching wires at sensors. What could be causing no fuel to injectors? I need help fast (before I blow myself up!). Thanks.
:wtf1:

[jlduster]

still trying

Is it possible the injectors are stuck closed? I don't know how long the 95 motor was sitting before I bought it. Would I be better off swapping in the 92 fuel rail? It has been sitting for 2 wks in garage, but ran fine before engine spuin bearing. PLEASE REPLY, I NEED MY CAR. THanks.

[CurtsLuminaZ34]

I would look at the injector signals from each injector plug, if only a couple are firing then it sounds like pcm troubles or if they are injector problems. Curt

[jlduster]

It was injector problem. See" finally" thread. Thanks.

[GPXSS]

Re: still trying

What could be causing no fuel to injectors? :wtf1:

Is your ECM plugged in

[dohcfiend]

if u have it apart,(ie the fuel rail off) a way i check injectors is disconnect all 6 plugs to them. turn the key enough to get the fuel pump activated and apply batt voltage to each one via 2 jumper wires(just hold for 1 sec then release repeat the on/off process about 3 times or as needed).
also common sense dictates to have a small bucket or something to catch the fuel spray. sometimes the injectors won't close all the way and will drip. this is a way i use to identify this. also if they don't open at all, that would be evident as well. u can seperate the good injectors from the bad and sell them or whatever.

p.s. also check for an even spray pattern. if not run some cleaner.