Release fuel pressure??? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

ny180sx · 10-20-2002, 03:34 PM

I bought the BOSCH Fuel filter and I'm changing filter myself.
the the book says that if my car has Fuel Injector system [EFI] then I have release fuel pressure before i change this filter..
I have a 1990' 240sx..w/KA24E.  Does my car has EFI System? and do I have to release the fuel pressure??
Anyone has experience with this situation??
Thanks..

s14 RL · 10-20-2002, 04:14 PM

Theres a writeup at 240sx.org along with a bunch of other helpful answers to faqs for other common maintenance, etc.

http://www.240sx.org/faq/articles/fu...eplacement.htm

anthony240 · 10-20-2002, 05:42 PM

yes, the 90 240sx is EFI. To release gas pressure, twist your gas cap off (you'll hear the pressure hiss). You can put it back in or leave it off it doesn't matter. Then, find your fuel filter. Loosen the upper rubber line and pull it off, some fuel will spill, that can't be prevented. Tuck the line away and do the same to the bottom line. Install is reverse of removal, make sure both lines are connected and tightened, and make sure fuel filter is secure.

fodive · 10-20-2002, 06:35 PM

simple, it is. it takes no longer than 5 minutes, jsut dont expect any power gains or anything

camppain · 10-20-2002, 07:47 PM

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (anthony240 @ Oct. 21 2002,06:42)</td></tr><tr><td id="QUOTE">yes, the 90 240sx is EFI. To release gas pressure, twist your gas cap off (you'll hear the pressure hiss). You can put it back in or leave it off it doesn't matter. Then, find your fuel filter. Loosen the upper rubber line and pull it off, some fuel will spill, that can't be prevented. Tuck the line away and do the same to the bottom line. Install is reverse of removal, make sure both lines are connected and tightened, and make sure fuel filter is secure.</td></tr></table><span id='postcolor'>
that does not fully release the pressure. you need to remove the fuel pump relay or fuse depends on your car i think s13's have relays.

once you remove it start the car and it will die out. try starting it till nothing happens at all, that is when fp is completely relieved.

but i never release the pressure when i changed fuel filters, you just have to be extra careful. this was me and im use to it and have done it over 100 times so if you are not comfortable nor have you done it before i don't recommend doing that.

edit* also when you put the new filter on put soe lube (white lith or red grease) on the tips so next time you change the filter it will come of with ease <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt='

'>

camppain · 10-20-2002, 08:09 PM

here is what i typed up for dsc topic but i guess he deleted it <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/tounge.gif" border="0" valign="absmiddle" alt='

'>

figured i would include it in here

1.release fuel pressure by removing fuel pump relay or fuse (your car should have one or the other either in engine bay or in kick panel) and fuel cap

2. start car (it should turn on and run for a few seconds then sputter and die out) try starting the car a few more times to make sure there is no fuel

3. remove fuel filter from clip(retainer whatever you want to all it) unscrew the clamps and move them out of the way.

4 you can (at times) just twist and pull off the rubber hoses or you will need some needle nose or hose remover (dont know the exact name of it but i got one from snap on)

5. remove the top one and put it to the side and make sure it does not drip point it upwards and away from eyesight (also remeber to be cautious while doing this in case you did not remove fuel pressure because fuel may spray you in your eye trust me on this one

)

6 grab filter and lower hose and twist and tug. if it does not work use the tools mentioned in step 4

7. put some white lith or red grease (at least some lubricating source) on the ends that go in the hoses to make the next time you replace your fuel filter a much easier expierience

do not worry and think the hoses can come off this way with the grease.

to install just reverse the order

10-20-2002, 05:42 PM	#3
anthony240 Zilvia FREAK! Join Date: Jun 2001 Location: Norcal Age: 43 Posts: 1,234 Trader Rating: (4) Feedback Score: 4 reviews	yes, the 90 240sx is EFI. To release gas pressure, twist your gas cap off (you'll hear the pressure hiss). You can put it back in or leave it off it doesn't matter. Then, find your fuel filter. Loosen the upper rubber line and pull it off, some fuel will spill, that can't be prevented. Tuck the line away and do the same to the bottom line. Install is reverse of removal, make sure both lines are connected and tightened, and make sure fuel filter is secure. __________________ 18+ to come//21+ to swallow

10-20-2002, 06:35 PM	#4
fodive Zilvia Junkie Join Date: Jun 2002 Location: Columbia, SC Age: 40 Posts: 548 Trader Rating: (0) Feedback Score: 0 reviews	simple, it is. it takes no longer than 5 minutes, jsut dont expect any power gains or anything __________________ roots.

10-20-2002, 07:47 PM	#5
camppain Will never get banned... Join Date: Sep 2001 Location: San Diego CA Age: 45 Posts: 1,510 Trader Rating: (0) Feedback Score: 0 reviews	</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (anthony240 @ Oct. 21 2002,06:42)</td></tr><tr><td id="QUOTE">yes, the 90 240sx is EFI. To release gas pressure, twist your gas cap off (you'll hear the pressure hiss). You can put it back in or leave it off it doesn't matter. Then, find your fuel filter. Loosen the upper rubber line and pull it off, some fuel will spill, that can't be prevented. Tuck the line away and do the same to the bottom line. Install is reverse of removal, make sure both lines are connected and tightened, and make sure fuel filter is secure.</td></tr></table><span id='postcolor'> that does not fully release the pressure. you need to remove the fuel pump relay or fuse depends on your car i think s13's have relays. once you remove it start the car and it will die out. try starting it till nothing happens at all, that is when fp is completely relieved. but i never release the pressure when i changed fuel filters, you just have to be extra careful. this was me and im use to it and have done it over 100 times so if you are not comfortable nor have you done it before i don't recommend doing that. edit* also when you put the new filter on put soe lube (white lith or red grease) on the tips so next time you change the filter it will come of with ease <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt=''> __________________ -=-99 Sentra SE 5 speed-=- -=-95 240 SE 5 speed-=-

10-20-2002, 08:09 PM	#6
camppain Will never get banned... Join Date: Sep 2001 Location: San Diego CA Age: 45 Posts: 1,510 Trader Rating: (0) Feedback Score: 0 reviews	here is what i typed up for dsc topic but i guess he deleted it <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/tounge.gif" border="0" valign="absmiddle" alt=''> figured i would include it in here 1.release fuel pressure by removing fuel pump relay or fuse (your car should have one or the other either in engine bay or in kick panel) and fuel cap 2. start car (it should turn on and run for a few seconds then sputter and die out) try starting the car a few more times to make sure there is no fuel 3. remove fuel filter from clip(retainer whatever you want to all it) unscrew the clamps and move them out of the way. 4 you can (at times) just twist and pull off the rubber hoses or you will need some needle nose or hose remover (dont know the exact name of it but i got one from snap on) 5. remove the top one and put it to the side and make sure it does not drip point it upwards and away from eyesight (also remeber to be cautious while doing this in case you did not remove fuel pressure because fuel may spray you in your eye trust me on this one) 6 grab filter and lower hose and twist and tug. if it does not work use the tools mentioned in step 4 7. put some white lith or red grease (at least some lubricating source) on the ends that go in the hoses to make the next time you replace your fuel filter a much easier expierience do not worry and think the hoses can come off this way with the grease. to install just reverse the order __________________ -=-99 Sentra SE 5 speed-=- -=-95 240 SE 5 speed-=-

10-20-2002, 03:34 PM	#1
ny180sx Join Date: Sep 2002 Location: japan Posts: 26 Trader Rating: (0) Feedback Score: 0 reviews	I bought the BOSCH Fuel filter and I'm changing filter myself. the the book says that if my car has Fuel Injector system [EFI] then I have release fuel pressure before i change this filter.. I have a 1990' 240sx..w/KA24E.  Does my car has EFI System? and do I have to release the fuel pressure?? Anyone has experience with this situation?? Thanks..

10-20-2002, 04:14 PM	#2
s14 RL Leaky Injector Join Date: Oct 2002 Location: OC Posts: 66 Trader Rating: (0) Feedback Score: 0 reviews	Theres a writeup at 240sx.org along with a bunch of other helpful answers to faqs for other common maintenance, etc. http://www.240sx.org/faq/articles/fu...eplacement.htm