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#1
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How to replace the fuel filter?
I have a 2001 GMC safari van and am about to replace the fuel filter. I
am not familiar with auto mechanics but I am quite handy (and short of funds to have this done at a garage). If I disconnect the battery and use some pliers to do the job will it go ok or is this device constructed in such a complicated way that parts will fall out when the nuts are loosened? I dont mind if some gasoline sprays all over the place. |
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#2
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> parts will fall out when the nuts are loosened? I dont mind if some
> gasoline sprays all over the place. I bet you won't like it if the fuel sprays in your face though. Relieve the fuel pressure first. |
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#4
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> wrote in message
ups.com... >I have a 2001 GMC safari van and am about to replace the fuel filter. I > am not familiar with auto mechanics but I am quite handy (and short of > funds to have this done at a garage). > > If I disconnect the battery and use some pliers to do the job will it > go ok or is this device constructed in such a complicated way that > parts will fall out when the nuts are loosened? I dont mind if some > gasoline sprays all over the place. > > You will mind if it's under high pressure, and some cars have pressures over 100 psi at the fuel injector rail. Start the van and pull the fuel pump fuse. The engine will die quickly and then you can work on the filter. Whatever pressure is in the line then won't be much. |
#5
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In article >,
"Bob M." > wrote: > > wrote in message > ups.com... > >I have a 2001 GMC safari van and am about to replace the fuel filter. I > > am not familiar with auto mechanics but I am quite handy (and short of > > funds to have this done at a garage). > > > > If I disconnect the battery and use some pliers to do the job will it > > go ok or is this device constructed in such a complicated way that > > parts will fall out when the nuts are loosened? I dont mind if some > > gasoline sprays all over the place. > > > > > > You will mind if it's under high pressure, and some cars have pressures over > 100 psi at the fuel injector rail. His 2001 safari van doesn't. > Start the van and pull the fuel pump fuse. The engine will die quickly and > then you can work on the filter. Whatever pressure is in the line then > won't be much. What if the fuel pump fuse also powers the fuel injectors and/or the PCM? |
#6
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>> You will mind if it's under high pressure, and some cars have pressures
>> over >> 100 psi at the fuel injector rail. > > His 2001 safari van doesn't. > >> Start the van and pull the fuel pump fuse. The engine will die quickly >> and >> then you can work on the filter. Whatever pressure is in the line then >> won't be much. > > What if the fuel pump fuse also powers the fuel injectors and/or > the PCM? Agreed, unplug the fuel pump/sender at the tank. Steve |
#7
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Look under the hood at the fuel rail. See if you see a spot that has a cap
on it like you see on a air valve to a tire. This is where you would connect a manual fuel gauge to test for pressure. It is spring loaded like the air valve on the tire. Turn off the vehicle, and press the spring on this connection down. The fuel will squirt out until the pressure is down to zero. You can buy a fuel pressure gauge that will screw into the manifold that has a bleed line off the gauge. If you have access bleed the pressure into a gas can. My mechanic always opens my gas cap. (not sure why but he does). Uses the required tool to remove spring connection fittings if your filter is equipped with them or loosen the flare nuts if equipped to remove the filter from the line. Once new filter is in place, close gas cap and remove any manifold you may have installed on the fuel rail. Turn key over but do not start the vehicle. Do this three times to ensure fuel has reach the injectors then try to start the vehicle. Check for leaks. Sarge |
#8
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> the air valve on the tire. Turn off the vehicle, and press the spring on
> this connection down. The fuel will squirt out until the pressure is down > to zero. Don't do this, unplug the fuel pump/sender and run the vehicle until it stalls. Restart a couple of times to make sure as much pressure is bled as possible. Steve |
#9
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"aarcuda69062" > wrote in message
... > In article >, > "Bob M." > wrote: > >> You will mind if it's under high pressure, and some cars have pressures > >> over >> 100 psi at the fuel injector rail. >> >> Start the van and pull the fuel pump fuse. The engine will die quickly >> and >> then you can work on the filter. Whatever pressure is in the line then >> won't be much. > > What if the fuel pump fuse also powers the fuel injectors and/or > the PCM? Maybe unplug the fuel pump???? |
#10
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In article >,
"Bob M." > wrote: > "aarcuda69062" > wrote in message > ... > > In article >, > > "Bob M." > wrote: > > >> You will mind if it's under high pressure, and some cars have pressures > > >> over > >> 100 psi at the fuel injector rail. > >> > >> Start the van and pull the fuel pump fuse. The engine will die quickly > >> and > >> then you can work on the filter. Whatever pressure is in the line then > >> won't be much. > > > > What if the fuel pump fuse also powers the fuel injectors and/or > > the PCM? > > Maybe unplug the fuel pump???? That will work if you can get to the plug easily enough. My reply was meant to remind that pulling the fuel pump fuse technique does not always work -if- that fuse also supplies power to the injectors and/or the PCM. i.e., killing everything at once won't deplete the pressure in the system. |
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