Question about 1990 Mitsubishi Eclipse

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No fuel to cylinder

1990 Eclipse 1.8non-turbo 82,000 orginal miles
I have fuel to the rail up to the injectors. If I pull the wire lead to the injector and hit it with a test light, I get bright light on 1 side, and a dim light on the other side. I do not know if I have a pulsing light when cranking the engine as I don't have a noid light. If I open the throtel on the plentim and spray starting fluid or dump gas in, the car fires immediately. Is it the crank sensor, cam sensor, or e.c.u.? do I check these parts and in what sequence? The crank and cam sensors I can't even locate.
Thank you for any help you can give me in a solution!
John Sloan

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Cam and crank sensors could possibly make them fire wrong but not stop them from working all together its ur ecu i have had to replace at least 20 of the with the exact same issue as long as you have good pressure to the injectors and everything is hooked up properly your gonna need an ecu sorry but good news is depending on your location they are relativly cheap

Posted on Mar 25, 2009

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The only thing I can suggest is that you try to quiz the ECU which needs specialist equipment.
Non injection of fuel can come from several causes, and without the correct equipment, it will be a game of process of elimination.
Crank sensors are the usual ones to fail if any, and usually sit on the side of the flywheel. Look for cables going down the side of the flywheel housing. Crank sensors can be tested with a diode meter and a magnet - giving a change of output when a magnet is passed close.

Check all available keys if it has an immobiliser fitted - sometimes it's a wiped chip in the key, then check sensors, and finally ECU. I've had a blown ECU when a coilpack went faulty. Changed everything - then finally ECU solved it.

Posted on Dec 26, 2008

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1996 mitshubishi eclipse 2.0 non turbo. It runs but has no injector pulse on cylinder 3

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Aug 31, 2015 | 1996 Mitsubishi Eclipse

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Number 5 cylinder injector fires intermietenly.i replaced injector and injector plug.

It is impossible to answer your question without knowing the YEAR, MAKE, and MODEL of your vehicle.
That being said, either the fuel injection controller has failed, or there is a problem with the wire leading to the injector, or there is an obstruction in the fuel rail preventing fuel from reaching the injector. Use an circuit tester to see if the injector is regularly receiving a pulse. If it is not, you have a wiring issue or a bad ICU. If it is getting a regular pulse, you have an obstruction in the rail (or you still have a clogged injector).

May 17, 2015 | Cars & Trucks

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No signal to fuel pump or injecters

Pressure in the rail indicates the pump is working.
When the key is turned on, the pump will come on for about 2 seconds to pressurize the fuel system. Then pump will shut off and not come on again until the engine is cranked. When cranked or when running, the pump will be on full time. To check if the pump is getting a signal, the engine must be cranking over. Or you may pick up that 1 or 2 second signal when the key is first turned to on. Is this the way you checked for power to the pump? How much pressure are you getting at the rail? Any pressure at all means the pump put it there.
Injector circuit test: Use a testlight and ground it to the engine. Pull off an injector connector and turn key to on. Probe the two wires to the injector. One wire should have power and light the testlight. If it does, the power side to injector is good. If nothing there, the injector drive circuit is out.
If you got a steady light on one wire, then check the injector ground circuit. Move the testlight lead from ground to the positive battery post. Now probe the injector connector's wire that did not light the testlight, while someone cranks the car over. If working right, the testlight should now be blinking, meaning the computer is properly grounding the circuit for injector to pulse. If both tests pass, the injector circuit is working right.
Good luck.

Jun 26, 2012 | 1990 Nissan 300ZX

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How to install a fuel injector on a 2002 jeep liberty 3.7

so that mean the old one is all ready removed.?
or did you mean all steps in the fsm for INJECTOR.
the steps are the same on all EFI fuel rail injectors.
you could google that or you tube it or read the FSM.

hide call keys from step 2 on, or very bad things can happen.
(wife or kids no aware of danger)
ill just cover the (basics)
1: per FSM , depressurize the system, in can be at 60PSI
parked. so avoid fuel in eyes, or a fire. we do that first.
gain access to rail under failure. (RUF) (no barking)
2: remove injector X , wire plug. (failing)
3: then detach the injector rail clamps the both rails off as one....
injector are all now loose, to pull off.
4: add new seals to new injector, and install in reverse order.

that's it, only the gain access , varies,... mostly.

last depressure steps:
run engine,
remove fuel pump relay, engine stalls. key off, hide keys

next tje FSM words (just the OFF section)

  1. Remove fuel tank filler tube cap.
  2. Perform Fuel System Pressure Release Procedure.
  3. Remove negative battery cable at battery.
  4. Remove air duct at throttle body air box.
  5. Remove air box at throttle body.
  6. Disconnect fuel line latch clip and fuel line at fuel rail. A special tool will be necessary for fuel line disconnection.
  7. Remove necessary vacuum lines at throttle body.
  8. Disconnect electrical connectors at all 6 fuel injectors. Push red colored slider away from injector. While pushing slider, depress tab and remove connector from injector. The factory fuel injection wiring harness is numerically tagged (INJ 1, INJ 2, etc.) for injector position identification. If harness is not tagged, note wiring location before removal.
  9. Disconnect electrical connectors at throttle body sensors.
  10. Remove 6 ignition coils.
  11. Remove 4 fuel rail mounting bolts.
  12. Gently rock and pull left side of fuel rail until fuel injectors just start to clear machined holes in cylinder head. Gently rock and pull right side of rail until injectors just start to clear cylinder head holes. Repeat this procedure (left/right) until all injectors have cleared cylinder head holes.
  13. Remove fuel rail (with injectors attached) from engine.
end expert.
login and read all steps. that be best , then ask questions?

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Sounds like your fuel pressure regulator is bad off the fuel rail. Is yours Turbo? If so, Napa p# CRB219788, not turbo, CRB 219796. you may have fuel to rail, but the regulator controlls fuel to injectors

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