300ZX (Z32) Performance / Technical Discussions related to Turbo charging, Supercharging, Engine, ECU, exhaust, and etc. performance enhancements and Techical related.

TT Fuel filter Change?

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Old 03-28-2006 | 09:01 PM
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TT Fuel filter Change?

I need to install a new fuel filter...Can anyone kinda walk me through it, so i dont kill myself....lol I know its not that big of a deal but i wouldn't mind hearing some info on it....Thanks
Old 03-28-2006 | 09:07 PM
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well im sure its the same as the NA. as you can see the filter is in a very easy access place. You need to unscrew the C-clamps that hold the fuel lines onto each side of the fuel filter. before you remove the fuel hoses you are supposed to disconnect your fuel pump so the fuel pressure is released. But you can simply clamp the hoses before you remove them if you so choose to. Or, you can do nothing, some fuel will come out but it will stop when all the pressure is released, if thats the method you choose (not highly recomended) make sure the engine is cool and you don't intend to drive much afterwords unless you rinse the fuel off. after your fuel lines are de pressurized and or clamped, removed the fuel lines from the filter. Unbolt the filter, then bolt the new one in. Install the fuel lines back on, tighten the claps, and then re attach the fuel pump wires if you disconnected them. When you go to start the car if you disconnected the fuel pump you will have to pump the pedal a little to get the gas moving through the lines again. If you didn't disconnect it, you should be ready to go.
Old 03-29-2006 | 08:50 AM
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You can just disconnect the battery to ensure that the fuel pump is off. Then, remove and replace the fuel filter. When you are done, reconnect the battery and the fuel system should pressurize itself.
Old 03-29-2006 | 10:06 AM
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I removed the fuel filter fuse then started the car untill it stalled then took off the old fuel filter and put in the new one and it fired right up. Thats the way it tells you how to do it in the FSM.

Last edited by nka04a; 03-29-2006 at 10:08 AM.
Old 03-29-2006 | 12:39 PM
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Originally Posted by nka04a
I removed the fuel filter fuse then started the car untill it stalled then took off the old fuel filter and put in the new one and it fired right up. Thats the way it tells you how to do it in the FSM.
thats the best way, because it de-pressurises the system.

joe, your way leaves the system pressurised. disconnecting the battery, while always good practice when working on your car, is not going to affect the pressure in the system at all. without de-pressurizing the system, you run the risk of hosing yourself and your engine bay down with fuel. i'm always careful around fuel after an injector hose popped loose on my stepdads 928, sprayed fuel all over the hot engine starting a fire, and melted a bunch of **** under the hood and the bumper too, and almost burnt our garage down.

Last edited by entropy31; 03-29-2006 at 12:42 PM.
Old 03-29-2006 | 01:40 PM
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So wheres that fuse located?
Old 03-29-2006 | 01:53 PM
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read this.
Old 03-29-2006 | 02:08 PM
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Thanks! see i did get good info!
Old 03-29-2006 | 03:07 PM
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Well, I did it before I had the FSM and have not done it since, nor looked at the procedure. Fair enough, though. However, when I did do it I just let the gas flow into a bottle. There really wasn't much fuel that came out.

Last edited by jaffi; 03-29-2006 at 07:36 PM.
Old 03-30-2006 | 01:54 PM
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i cant get my fuel lines off my friggin fuel filter
ive depressureized the system too
Old 03-30-2006 | 02:05 PM
  #11  
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i got one end off...the hose is sticking on the fuel filter like mad, i cant get it off the filter itself.

edit* got it finally...

Last edited by 91Zman; 03-30-2006 at 02:39 PM.
Old 03-30-2006 | 09:31 PM
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Isn't disconnecting the battery and pulling the Fuse the same thing? They both cut power to the fuel pump? I'm changing the filter this weekend when I have a little more time..... I just want to do it right. Depressurize the system by unscrewing the gas cap, cut power to the Fuel pump (fuse or battery), remove the lines from the filter (Put a towel over the lines when i pull them to protect me and the car when the pressure is exspelled)...Install the new filter, attach the lines (flat side facing firewall) screw it down... finished? Right, am i missing anything?
Old 03-30-2006 | 09:37 PM
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No, it's not.

You can't start the car without the battery connected; which is what you need to do to purge the fuel line. By removing the fuse you are able to prevent the fuel pump from running when the car is started.

One could also unplug the fuel pump relay behind the drivers side kick panel, then start the car to purge the lines.

As a friendly reminder for those who aren't all that mechanically savvy....this should be done when the engine is cold. You wouldn't want to spill fuel on a hot exhaust manifold. That could be bad.
Old 03-30-2006 | 09:53 PM
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Originally Posted by 91zxtt
No, it's not.

You can't start the car without the battery connected; which is what you need to do to purge the fuel line. By removing the fuse you are able to prevent the fuel pump from running when the car is started.

One could also unplug the fuel pump relay behind the drivers side kick panel, then start the car to purge the lines.

As a friendly reminder for those who aren't all that mechanically savvy....this should be done when the engine is cold. You wouldn't want to spill fuel on a hot exhaust manifold. That could be bad.
Thank, I forgot i need to Purge the lines...And i think i fall in that catagory! lol
Old 04-02-2006 | 12:16 AM
  #15  
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Everything went great... so thank everybody for the info they provided me... I also Called My friend Tim that guy knows everything there is to know about "Z's"!!!!!!!!!!! Seriously he does!!!! But thanks again to everybody!
Old 04-02-2006 | 04:22 PM
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eh, i just opened my gas cap to let out the pressure then when i took the filter off the only fuel that spilled onto my towel was from inside the filter itself when i tipped it up on its end
Old 04-10-2006 | 06:46 PM
  #17  
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What? Sorry to burst your bubble, but opening the gas cap doesn't relieve the pressure in the fuel line. If you only had a little fuel spill out, then you could have a few things happening...1) a fuel injector is leaking and allowing the standing pressure to leak out into a cylinder or 2. 2) You FPR is on it's way out. It may be bleeding pressure back into the fuel tank. 3) Your fuel pump could be on it's way out...it could be letting fuel bleed back into the tank.
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