Give us a hand eh? Asked Tuff to tell me where the fuel pump relay/power was and he said he has no idea! Silly me.


So, where is the fuel pump relay/power so i can de-pressurize the lines? I'd like to replace my filter tonight and NOT pass out from fuel fumes in my little garage.

Give us a hand eh? Asked Tuff to tell me where the fuel pump relay/power was and he said he has no idea! Silly me.


So, where is the fuel pump relay/power so i can de-pressurize the lines? I'd like to replace my filter tonight and NOT pass out from fuel fumes in my little garage.

its under the rear seat mate.

its under the rear seat mate.


For all gens?

Forgot to add, 2nd gen!

am out right now. Just pulled my rear seat out. Nothing. Cheers dude!

Have you checked in the boot under the carpet, a black or gold coloured cover held down by a few srcews. If its the same as my galant then you can just unplug the pump from there while the car is running and let it stop by itself.

All you'll really need to do is unplug the pump, which (AFAIK) on sedans is accessible from the rear of the fuel tank, under the car.

just take the fuel cap off...

you only loose about 100ml when you open the fuel line. just watch your eyes and use goggles

just take the fuel cap off...



Does that really depressurise the fuel system??? I'm sorry but I'm skeptical that it would do anything at all. Every time I've needed to depresurise the fuel system I've disconnected the fuel pump relay, then attempted to start the car about a dozen times, and even then there is still enough pressure in the fuel lines that fuel will "squirt" out for a second or so.

Does that really depressurise the fuel system??? I'm sorry but I'm skeptical that it would do anything at all. Every time I've needed to depresurise the fuel system I've disconnected the fuel pump relay, then attempted to start the car about a dozen times, and even then there is still enough pressure in the fuel lines that fuel will "squirt" out for a second or so.

That's exactly what happened to me last night. I depressuried the system, cranked the engine over for a bit, and opened the tank. I still ended up soaked in fuel. I think having the tank open made it a bit worse - kind of like opening the top of a fermenting drum when you're filling bottles.

All you'll really need to do is unplug the pump, which (AFAIK) on sedans is accessible from the rear of the fuel tank, under the car.


what he said. jack up the rear left wheel and look at the tank on that side, u will see a white connector. unplug it start the car till it stalls. give it a couple seconds cranking for good measure and system is depreassurised.

you can disconnect the fuel pump and get rid of some pressure but its still going to leak fuel out.

if you dont undo the cap the tanks pressure will push out fuel the whole time your trying to replace the filter.

easiest way is... undo the fuel cap, undo the fuel hose with the nut (watch your eyes as it can spray fuel out.) undo the clip hose.
have new filter close by to quickly put the clip hose back in and then start the nut on the end of the hose.

also its best to do this out side and when the car is cold

just unplug the pump (back of the tank) and take off the fuel cap and then crank it over for a while.

Then undo all you filter fittings. It might still might spill about 50mL. Did this when replacing my FPR and filter; it works.

you can disconnect the fuel pump and get rid of some pressure but its still going to leak fuel out.

if you dont undo the cap the tanks pressure will push out fuel the whole time your trying to replace the filter.



I've never undone the fuel cap and have removed and refitted fuel filters and pressure regulators numerous times using the method of disconnecting the fuel pump relay - then turning over the car a number of times. In every instance there has been an initial loss of fuel when the part in question was disconnected but the flow of fuel has always come to a complete halt after a few seconds.

But hey - if it works for some people, who am I to say not to do it. Seems to me there's nothing to loose by doing it, as it only takes 2 seconds.

the repair manual says to repressurise
remove the fuse located in the under bonnet fuse box
then replace
from memory it was a 15 amp

or you can disconnect the battery briefly

the fuel pump relay is wired to the ecu so wont be far from that
try the passenger side near the ECU on the V6 behind the glove box

Thanks guys, i just ended up taking the sucker off without depressurising it. Lost bugger all and the filter made a big diff.

Did notice in the manual i downloaded (workshop manual) that EFI 2nd gens are only supposed to change their fuel filter every 100,000 where as the carb 4's would go through 4 in the run to 200,000

if running ulp the filter get dirty very quick around 20000km
if running premuim fuels you would get 100000km

ulp is very dirty fuel

what exactly makes it 'dirty'?

what exactly makes it 'dirty'?

Dirt :nuts: :D

Crap and impurities like dust and such get in the fuel quite easly. I've installed CAV filters in several boats back up in Port Douglas, bout three months later went to replace the filter on one of the boats and found what looked like wire from a wire brush and sand :shock: I've also found similar stuff in one i put in a mates 4WD for his long range tank.

the fuel from the bowser is filthy