Question about Citroen Agusta F4 R312 1 plus 1

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No electrical power to injectors,earth leackage,were do i look

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I am totally wrong here no doubt but this fault sounds like a bad connection on a multiplug harness somewhere under the bonnet in the engine compartment

Posted on Apr 18, 2015


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Where does my fuses go and to what?

basic electrical circuit , Battery earth and power, to fuse's and relays power and earth, to user's ie switch's ,motors etc , called earth return as earth of components does not have to got to the battery as the battery is earthed to the vehicle chassis, so the earth of components (user's) can be put to the chassis as well hence earth return, does this help in any way ?

Oct 18, 2014 | 1994 Cadillac Eldorado

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2006 mercury montego 3.0 no fuel to front 3 cylinders engine runs on back 3 cylinders

As there is a common fuel pump that feeds both banks, I assume there is fuel pressure to the injectors. If there is spark but no fuel, it means injectors are not pulsing. For all three on one bank to be faulty, I would look for damaged wiring or a bad earth. All three would have a common earth so that is where I would start.

Try putting a test light across the two wires on an injector- while it is cranking or running, it should pulse. Try on a good injector to see what the result should be. If you try on one of the dead cylinders and there is nothing, then you either have no earth or no pulse. Test continuity with a multimeter to earth and try earthing you r test light and checking for pulse- this should give you and idea as to where you need to start looking.

Was this after a repair or did the fault just occur?

May 15, 2014 | Cars & Trucks

1 Answer

No injector pulse

one ( red ) will be the power in wire and the black one will be the return earth wire back to the ECM

Mar 14, 2014 | Chevrolet Tahoe Cars & Trucks

1 Answer

Hi i have a 89 ea falcon i have a problem with the injectors not fireing a wont start, it has power going into the computor but not coming out to fire them . u can start it by turning the key on and...

I would be very interested in helping you, but I need some help understanding your problem. Fuel injectors do not fire. The spark plugs do that honor.

If you are not getting current to eh injector that is another matter altogether. Please try and let me know how the car is acting. Will not start? does it start but then shuts down? Can you run current to the injectors seperately and start the car. You might want to check with your electrical man and ask him what he did or did not do. Please feel free to contact me at any time.

Jun 20, 2010 | 1983 Ford Fairmont

1 Answer

I have no power to my fuel injectors

no pwr or no earth the ECU supplies the earthing side the pwr will come from the fuse box more information pls

Jun 06, 2010 | 1994 Pontiac Sunbird

2 Answers

Has all power and still wont start it has a spark it is a 2.5 4 cylinder 1996 the spark is wite i checked the timming could it be the crank positioner

Check the timing belt they are known to loose teeth and slip when old I've seen them be in perfect timing on the wrong cylinder! 80k /belt

Jan 14, 2010 | Jeep Wrangler Cars & Trucks

1 Answer

Constant power to all 4 injectors

thats how it should be constant power on one wire and the engine ECU (computer) supplies earth on other wire at correct moment to enable the injector(squirt fuel) open.
can test if this is happening with injector noide light or some diode test lights to see if light flickers on and off (pulses dimmly)

Oct 31, 2009 | 2000 Daewoo Lanos

1 Answer

Car stumbles,hesitates,loses power on Hwy, randomly

Did you check earth connection of electric system?

May 10, 2009 | 1995 Oldsmobile Eighty Eight

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