Question about 1991 Honda Civic

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Fuel to injectors

How to check to see if the fuel is getting to the injectors.

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On the fuel rack there is a small cap that looks like a tire valve stem cap take it off turn on the ignition switch but dont start the car when you take the cap off you need to use a small phillips screw drive to depress the pin inside the bleeder hole and see if fuel comes out if no fuel your rack has now pressure check you pump and relays, if you get fuel pressure than you might need new injectors

Posted on Nov 28, 2009

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Posted on Jan 02, 2017

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2 Answers

Not getting fuel out of injectors


Hi John. Have you checked at all whether you do have any electrical problem on the circuit for your injectors? or whether you do have any immobilizer which is set to cut the power to the injectors for not spraying fuel? or if you do have any relay or any ECU failure? Good Luck John.

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Either has a bad injector or the wiring to that particular injector has been pinched or skinned and grounded somewhere.

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check for air in the system . Bleed out at all bleed screws . crack the injector lines at the injectors and continue cranking until diesel drips from the nut. tighten and continue cranking. Check for fast crank speed and glo-plug operation

Jan 11, 2014 | Cars & Trucks

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Getting good fuel pressure to carb but no fuel to injecters can a bad relay cause it to do that


No, but wrong thinking can get you a lot of scathing responses from crabby old mechanics. lol, like me! If you're getting good fuel pressure to, to the "throttle body injection" unit, (it only looks like a carburetor on the outside-it has about 120 fewer pieces inside it. And any form of fuel injection threw carbs into the fossil pile they deserved.)...so you are getting fuel to the injectors if you have fuel pressure in the line.
Have you watched for fuel spray out the bottom of injectors while the car was being cranked over? If so, and you have no fuel coming out, then you need to check the injector circuit. It is a fused circuit, so check first for the injector fuse. There should be an underhood fuse and relay block, so check there. Power for the injectors should be available at the injectors anytime the key is on.
Post back if you need more help. I was only kidding in my first response, cheers.

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1 Answer

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i would check the wiring to tthe injectors first see if there is power getting to injectors then i would look at replacing them are they individual injectors or a rail type i think they are rail type if so the wiring or injector goosed as the fuel runs along the rail and the injector opens when the signal gets to it if you get what i mean hope this makes sence and helps ivan

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Hey i was wondering what would be the problem with y van i just died and when i had it in the shp he said it was a fuel problem and i put in a new fuel pump and and fuel filter and there is still it is not...


Spray starting fluid or carb cleaner into the air intake to see if it really is a fuel problem. If it tries to start, like firing for a few seconds, it is probably not getting gas to the cylinders. Then you need to check the injector circuit. If fuel is getting up to the engine, then the pump is working, but maybe not good enough-check that by testing the fuel pressure. Hook up a fuel pressure gauge to the fuel rail, turn key to on, and you should see high pressure on the gauge, about 50 psi, but check for manufacturer specs for the correct pressure.

The injector circuit uses a fuse for the injectors, then it applies constant voltage to the injectors when the key is in on or run or start. See if you have voltage to the injectors with the key on. The injectors will pulse when the pcm momentarily grounds the injector circuit-it grounds each individual injector internally inside the computer for a split second. This causes the injector solenoid to energize and raises a pintle inside the injector so that fuel under pressure will spray out into the cylinder.

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1 Answer

I have a 4 cylinder gsx eclipse but im getting a p0205 code which is a injector circuit malfunction in cylinder 5. why would i get this code?


CODE PO205 - IS INJECTOR 5. YOU NEED TO USE FUEL INJECTOR NOID TEST LIGHT OR A STETHOSCOPE TO CHECK ALL FUEL INJECTORS TO SEE OR HEAR WHAT FUEL INJECTOR NOT WORKING.USE TEST LIGHT IF BLINKS FUEL INJECTOR GETTING POWER.THE STETHOSCOPE USE IT LIKE A DOCTOR TO HEAR WHAT FUEL INJECTORS WORKING.YOU SHOULD HEAR CLICKING NOISE IF YOU HEAR NO INJECTOR NOISE AND IT IS GETTING POWER.THE FUEL INJECTOR IS FAULTY.

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After removing the fuel injectors and rail to remove the manifold, how do you reinstall the fuel injectors?


the same way you took it apart. put a little grease around the rubber seals so they will slide in easier. just tap on the fuel rail while lightly tapping it into place.

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Injectors not getting fuel


i have an 88 chevy truck, not getting gas to come out of injectors.. getting gas all the way through the lines all the way up to the tbi but not out of injectors. pressure gage check done! new fuel regulator done! . u can put gas in the throttle body and it fires right up.??

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