Question about 1989 Ford Mustang

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O rings leaking at fuel intake

How do i change o rings

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Remove bolts holding fuel rail to intake, gentley pry up fuel rail and injecters. You will have o rings at top and bottom of injecters, lubricate well before installing.

Posted on Jan 09, 2009


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After changing fuel injectors the car will start for less than a second and cut out .and will not start again why?thanks for your help

Check the o-rings for leak, it sounds like they slipped and are causing a vacuum leak. I lubricate my fuel rail with wd40 and intake holes too. After you have installed them into the fuelrail properly you line them up on top of the intake holes and finesse them into the saddle one by one. If any of these injectors were a battle getting in then you might need to buy new o-rings, they are easy to break when not properly installed.

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1999 Alero : Fuel leaking at a fitting where fuel line goes under intake manifold. Does manifold have to be removed to remove or tighten this fitting?


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My husband has a 2004 Chrysler Intrepid. On June 21, 2011 the engine light came on and we took it took it to the garage . The mechanic replaced the intake gasket for a vaccum leak , well since then it...

Take it back and he will fix it, maybe a o-ring where the fuel line connects to the fuel rail or if he removed the injectors, then a o-ring maybe pinched, loose fuel line fitting. something minor, but dangerous, can catch fire real easy, I would have it towed to be safe.

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Where is it leaking? If its at the fuel rail fuel pressure regulator you may need a new regulator if leaking on the metal part. If its leaking at the rail side its just the "O" ring. Relieve fuel pressure(push in valve under plastic cap right side beside alternator on rail. Remove the torx screw holding regulator bracket. Pry out and replace "O" ring, reassemble. If its not the regulator it may be a fuel injector, you need to remove the fuel rail and replace both the upper and lower injector "O" rings. This however needs the intake manifold removed to repair.

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Fuel leak under turbo on 1997 ford 7.3 , changed fuel lines from filter still getting leak on intake manifold.

Is the fuel in the valley right under the fuel pump? If so, your fuel pump might have failed and is leaking out of the weep hole.

Other places to look would be the fuel filter seal and a bad o-ring in the fuel drain relief valve.

Good luck

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I replace the intake gasket of a 96' Jimmy 4.6 now it wont start I was thinking if it could be out of timing

you could have intake leak.also intake leak at injector o rings or seals leak.when replacing intake gasket you have to tighten in sequence.if not intake gasket will leak again.

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99 Lumina Won't start after intke gskt chng--fuel system clicking

Sound like you forgot to put new O-rings on fuel have a intake leak through the injectors ports. that why car wont crank .remove fuel rail.replace upper and lower O-rings on fuel injectors.

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Gas smell in car

There is a recall on the fuel rail for your vehicle. In my case I had 2 leaking fuel injectors. The intake manifold needs to come off, but it pretty easy to change the o-rings on the leaking injectors. Costs is about $25 for the new o-ring and about 2 hours of your time.

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1 Answer

Fuel dripping from fuel rail. How to change o-rings

It is pretty standard on most vehicles it just depends on how many O-rings here is a picture an O ring on an injector. You can take a pick tool to remove the ring. The injectors should come out with some type of clip.

You can use the below just - the changing of the injectors. :)

Step1 Determine which fuel injector your Jeep Grand Cherokee will need. This depends not only on the make and model, but also the engine size. Models made from 1999 to 2004 may be equipped with a 2.7L OM647, 3.1L 531, 4.0L PowerTech, or 4.7L PowerTech engine. Models made after this date can have a 3.0L OM642, 3.7L PowerTech, 4.7L PowerTech, 5.7L Hemi or 6.1L Hemi. Step2 Relieve fuel system pressure and disconnect the negative battery cable with a socket wrench. Remove the air intake assembly and unplug the electrical connectors for the alternator. Step3 Detach the fuel lines from the fuel injectors. Remove the vacuum hoses and electrical connectors from the throttle body with a socket wrench. Step4 Unplug the electrical connectors for the fuel injectors, manifold absolute pressure sensor and intake air temperature sensor. Disconnect the ignition coils and mounting bolts for the fuel supply manifold with a socket wrench. This will allow you to remove the manifold with the injectors still attached. Discard the old O-rings. Step5 Install the new fuel injectors by reversing the removal procedure. Use a torque wrench to tighten the mounting bolts for the fuel supply manifold to 20 foot pounds. Step6 Start the engine and check for leaks.

Jan 09, 2009 | 1993 Jeep Grand Cherokee

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