Question about 1986 Cadillac DeVille

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We can not understand why it cant get fuel to the injectors

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Have you tested out the fuel pump? check for plugged fuel filter?
plugged fuel lines to the fuel rail, injection pulse at the injectors? power to the fuel pump relay? grounds needed to make certain systems work must check those also. get a wiring diagram of the fuel supply system and back trace all the wiring and see if you have power and ground and signal.

Posted on Aug 28, 2010

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2 Answers

Why is there no power coming to injectors


What kind of vehicle. Most deisel injectors are operated under pressure and not electric. If no fuel to a diesel injector you may have a lift pump issue in the fuel tank

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What is blocking the fuel from getting to the injectors?


I'm not a professional mechanic but the fuel pump does that and it has to have a clean fuel filter to do it effectively.

Dec 01, 2014 | Cars & Trucks

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What does the fuel look like coming from the injecter


great start of a great question but i cant understand it.
sure my knuckles drag too low.....
my guess is you left out spray pattern?

ok lets google that.

https://www.google.com/webhp?gws_rd=ssl#q=injector+spray+patterns

easy huh?

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Fuel injectors


For jeep grand Cherokee fuel injectors replacing, i suggest you to go the help oink provided below:-----

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http://www.howtorepairguide.com/2012/11/fuel-injector-replacing-jeep-grand.html
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Number one injector came loose in 2001 toyota avensis d4d, removed injector pipes, wiring on injectors and rocker cover, tightened down injector, rebuilt and is now down on power.


REPLACE THE FUEL INJECTOR CANT REBUILT IT.IF YOU REMOVE FUEL INJECTORS FUEL RAIL YOU HAVE TO REPLACE GROMMETS AND O RINGS ON ALL THE FUEL INJECTORS IF NOT YOU WILL HAVE A INTAKE LEAK AT THE OLD FUEL INJECTORS SEALS.REPLACE THE FUEL INJECTOR YOU REBUILT THEY HAVE TO BE REPLACED.

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My 2001 Saturn, will start but not stay running. We have checked the fuel pump and all fluids. Did a compression check this morning, fuel injectors are not injecting fuel into fuel rail. Why is engine...


You said, 'fuel injectors are not injecting fuel into fuel rail' but it's my understanding that the fuel rail gasoline is supplied by the pump, and the fuel injectors just pulse to allow fuel to get to the cylinders. I would check out the fuel delivery problem further. Check for pressure in the fuel rail that is within specs.

If not, then the pump or fuel pressure regulator may be the problem. Check the fuse for the fuel pump. If good, then the pump may be bad in the tank.

Good luck on this.

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2 Answers

FUEL INJECTORS WON'T LET FUEL PUMP OUT


Check your fuel filter and see if fuel is getting through it. You will know whether to look forwards or backwards after looking at the filter.

If you have the switchable gas tanks check the switch. Usually one side will always work, but if it came apart inside it may block the lines.

Since you have pumps at the tanks you should be pushing fuel, not like a diesel that pulls fuel. I would say a TPS (throttle position sensor) could be bad as it tells the injectors to let the gas in, but you say the injectors are dry. When you test, block the TPS open a bit or test for fuel before the injector rail.

Mar 25, 2010 | 1988 Ford F 150

1 Answer

1988 chevy 1/2 ton and i cant get fuel to the TBI injector . the fuel pump works and the fuel filter is clear and it turns over but it wont start what do i check to fix the problem help


Replace the pick up coil if there is fuel to the injector.If there is fuel pressure at the injector,then it is the pick up coil.If the fuel pump is working,and the fuel filter is new,then there is fuel at the injector,just no pulse,correct?

Jan 14, 2010 | 1988 Chevrolet C1500

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disconnect fuel filter on flow side turn key on if it spits fuel you should check the sparkplugs and injectors for propper spray pattern

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