96 cavelier the o ring on the fuel rail is leaking gas do i need to releave the presuure first, or?

If the metal fuel rail itself has a leak, it should be replaced. If it is leaking by an injector, the O-rings on the injectors need to be checked and probably replaced. If a fuel line to the rail is leaking, that will have to be repaired. There will be two fuel lines at the rail, the feed line in from the gas tank, and a return line from the rail back to the tank. If there is a pressure regulator on the fuel rail (it will have a short vacuum line hose to it), the regulator may also have an o-ring to keep from leaking where it mounts.

disconnect the fuel lines at the fuel rail.then follow the fuel rail to disconnect every thing fastened to it,find the hold down bolts that fasten it to the motor(intake).unbolt the bolts.now you should blow any dirt around the areas were the fuel injectors go into the intake.disconnect the injector electrical plugs.pull the fuel rail and injectors together out of the car.you may need something to pry the rail/injectors up as it will be stuck to the intake.once out then you can remove the locking clips that hold the rail to the injectors and separate the injectors from the rail.install the injectors into the new rail in the same position as they were in the old rail.use a lubricant on the O rings when installing the injectors onto the new rail and insert the lock clips.lube the injector O rings on the end that goes into the intake and re-install in reverse order.reconnect items in reverse order and you can start the car.check for gas leaks.NOTE:if the O rings are cracked of broken replace with new injector O rings.

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.

SMELL GAS YOU NEED CHECK ALL FUEL LINES UNDER THE HOOD IN THE ENGINE COMPARTMENT.IF GAS IS STRONG UNDER HOOD YOU DONT SEE LEAKING FUEL LINES.YOUR FUEL RAIL FUEL INJECTORS LEAKING OR FUEL PRESSURE REGULATOR O - RING OR DIAPHRAM LEAKING GAS.IF FIND NO LEAKS UNDER THE HOOD CHECK FUEL LINES UNDER CAR FROM ENGINE TO FUEL TANK FOR LEAKS.IF ALL IS GOOD YOUR EVAPORATIVE CANISTER SOAKED WITH GAS OR YOUR EMISSION EVAPORATIVE SYSTEM NOT WORKING. DEALERSHIP HAS TO CHECK AND FIX.

get a new fuel pump and screen then drop the gass tank get hi pressuer clamp releasher dis conect the battrey releave the gas pressure on the fuel rail befor you themp to remove the clamps on the gas tanks the replace the whole fuel pump and screen note replace the fuel filter allso

check for leak at fuel fittings on injector rail, faulty fuel pressure regulator (small round canister type valve on end of fuel rail, has vacuum line attached to top) leaking o-rings on injectors.

Where the injector's mount to the fuel rail and into the eng. there are o-ring's.Check the o-ring's for damage.If the o-ring that seal's the inj. to the fuel rail is damaged it will leak alot from the pressure of the pump and make the car act like it's running on 3 cylinders because there is no fuel going to the cylinder to ignite.If there is a bad seal in the area where the inj. goes into the cyl.head it will leak a little and should be fixed as well.When installing new o-ring's lube them up litely for a easier install.Be sure to clean the gas up so you dont ignite any spilled gas.Hope this help's.

ther is a recall but you dont replace any o rings you place sealing rings over the rail and the points where it connects to the crossover they are clamped over the rail.. you can only but them from the dealer.. if you dont bring the van to them they can

Dont replace just one O ring on the injectors. You need to replace all when you replace them. It sounds like you still have O ring leaks.

Well its easy to check find the regulator on the fuel rair next remove the vacuum line and see if there is any gas in te line if not have some one start the car if the regulator starts leaking gas out its shot. Its a easy repair take the vacuum line off loosen the big nut on the regulator and remove the smaller hold down bolt now becarefull at this point the fuel rair is under hight pressure so put a rag over the regulator or put on some safety glasses and start to wiggle or pry the regulator from the fuel rail. When u get it out match it up to the new one and make sure all the old o rings are removed from th fuel rail put the new one in start the car and check it for leaks.