S14 Leaking Massive Gas! HELP!

[JasianBlazin]

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[Sileighty_85]

does it only leak when running?

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

[RandallSharp]

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

[JasianBlazin]

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[chetos13]

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

[OLDSCHOOLRICE]

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]

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

[JasianBlazin]

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[fliprayzin240sx]

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]

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[Sileighty_85]

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]

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]

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[JasianBlazin]

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[JasianBlazin]

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[Sileighty_85]

check ECU for codes