S14 Leaking Massive Gas! HELP! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

JasianBlazin · 01-07-2012, 10:39 PM

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Sileighty_85 · 01-07-2012, 10:41 PM

does it only leak when running?

If so, then you might have a loose line at the tank.

RandallSharp · 01-07-2012, 10:43 PM

Are you sure you installed the fuel pump correctly and you didn't damage anything?

JasianBlazin · 01-07-2012, 10:51 PM

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chetos13 · 01-07-2012, 11:01 PM

It's maybe leaking from the fuel lines that connect to the fuel pump

OLDSCHOOLRICE · 01-08-2012, 09:36 AM

The rubber hoses that connect to the pump start to rot. When you replaced the pump the return hose from the pump to the hard lines probably cracked/tore. This would explain why the engine still runs but you’re dumping fuel on the ground. If I remember correctly the rubber hose section is probably only about 12” long.

jr_ss · 01-08-2012, 11:16 AM

My bet is you didn't tighten down a connection at the fuel pump/tank fittings when you changed the pump out out...

JasianBlazin · 01-08-2012, 05:25 PM

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*fliprayzin240sx* · 01-08-2012, 07:17 PM

Make sure the rubber seal is seated properly. Clean the threads on the cap and the neck, will help when you twist them back together.

JasianBlazin · 01-08-2012, 08:04 PM

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Sileighty_85 · 01-08-2012, 08:18 PM

I had this issue I think I put the seal on first then the line cap with a twisting motion... not 100% sure though

jr_ss · 01-08-2012, 08:19 PM

If you're trying to reuse the factory seal you're going to have a helluva time getting it right. Best option is to purchase a new seal from Nissan. Over time the fuel vapors seep into the seal and expand it, making it extremely difficult to reuse.

JasianBlazin · 01-08-2012, 08:48 PM

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JasianBlazin · 01-08-2012, 08:58 PM

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JasianBlazin · 01-09-2012, 01:00 PM

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Sileighty_85 · 01-09-2012, 01:02 PM

check ECU for codes

01-07-2012, 10:39 PM	#1
JasianBlazin Zilvia Addict Join Date: Oct 2010 Location: Central California Posts: 941 Trader Rating: (24) Feedback Score: 24 reviews	S14 Leaking Massive Gas! HELP! ............. Last edited by JasianBlazin; 05-19-2014 at 09:32 PM..

01-07-2012, 10:41 PM	#2
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	does it only leak when running? If so, then you might have a loose line at the tank. __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

01-07-2012, 10:43 PM	#3
RandallSharp Zilvia Member Join Date: Oct 2011 Location: Ohio Age: 33 Posts: 183 Trader Rating: (0) Feedback Score: 0 reviews	Are you sure you installed the fuel pump correctly and you didn't damage anything? __________________ 1991 240sx Hatch Daily'd!

01-07-2012, 10:51 PM	#4
JasianBlazin Zilvia Addict Join Date: Oct 2010 Location: Central California Posts: 941 Trader Rating: (24) Feedback Score: 24 reviews	............ Last edited by JasianBlazin; 05-19-2014 at 09:33 PM..

01-07-2012, 11:01 PM	#5
chetos13 Zilvia Member Join Date: Mar 2008 Location: las vegas, nv Age: 39 Posts: 206 Trader Rating: (2) Feedback Score: 2 reviews	It's maybe leaking from the fuel lines that connect to the fuel pump __________________ TEAM ELITE

01-08-2012, 09:36 AM	#6
OLDSCHOOLRICE Zilvia Member Join Date: Jan 2008 Location: Eagle Rock, CA Age: 42 Posts: 184 Trader Rating: (17) Feedback Score: 17 reviews	The rubber hoses that connect to the pump start to rot. When you replaced the pump the return hose from the pump to the hard lines probably cracked/tore. This would explain why the engine still runs but you’re dumping fuel on the ground. If I remember correctly the rubber hose section is probably only about 12” long.

01-08-2012, 11:16 AM	#7
jr_ss Post Whore! Join Date: Dec 2005 Location: Pa Posts: 6,415 Trader Rating: (35) Feedback Score: 35 reviews	My bet is you didn't tighten down a connection at the fuel pump/tank fittings when you changed the pump out out... __________________ My SR20VET Does your VTC gear rattle in your S14/15 SR? PM me.

01-08-2012, 05:25 PM	#8
JasianBlazin Zilvia Addict Join Date: Oct 2010 Location: Central California Posts: 941 Trader Rating: (24) Feedback Score: 24 reviews	............. Last edited by JasianBlazin; 05-19-2014 at 09:33 PM..

01-08-2012, 07:17 PM	#9
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	Make sure the rubber seal is seated properly. Clean the threads on the cap and the neck, will help when you twist them back together. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

01-08-2012, 08:04 PM	#10
JasianBlazin Zilvia Addict Join Date: Oct 2010 Location: Central California Posts: 941 Trader Rating: (24) Feedback Score: 24 reviews	............ Last edited by JasianBlazin; 05-19-2014 at 09:33 PM..

01-08-2012, 08:18 PM	#11
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	I had this issue I think I put the seal on first then the line cap with a twisting motion... not 100% sure though __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

01-08-2012, 08:19 PM	#12
jr_ss Post Whore! Join Date: Dec 2005 Location: Pa Posts: 6,415 Trader Rating: (35) Feedback Score: 35 reviews	If you're trying to reuse the factory seal you're going to have a helluva time getting it right. Best option is to purchase a new seal from Nissan. Over time the fuel vapors seep into the seal and expand it, making it extremely difficult to reuse. __________________ My SR20VET Does your VTC gear rattle in your S14/15 SR? PM me.

01-08-2012, 08:48 PM	#13
JasianBlazin Zilvia Addict Join Date: Oct 2010 Location: Central California Posts: 941 Trader Rating: (24) Feedback Score: 24 reviews	............ Last edited by JasianBlazin; 05-19-2014 at 09:33 PM..

01-08-2012, 08:58 PM	#14
JasianBlazin Zilvia Addict Join Date: Oct 2010 Location: Central California Posts: 941 Trader Rating: (24) Feedback Score: 24 reviews	........... Last edited by JasianBlazin; 05-19-2014 at 09:33 PM..

01-09-2012, 01:00 PM	#15
JasianBlazin Zilvia Addict Join Date: Oct 2010 Location: Central California Posts: 941 Trader Rating: (24) Feedback Score: 24 reviews	........... Last edited by JasianBlazin; 05-19-2014 at 09:34 PM..

01-09-2012, 01:02 PM	#16
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	check ECU for codes __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

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