Fuel out of intake

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Old Jul 28, 2018 | 02:08 PM
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Default Fuel out of intake

So a couple days ago I go out to start my car and it would turn over but not start. After trying a couple times acted like the battery was dead. So I go get my other car to jump it and when I come back gas is pouring out of my intake, roughly about a gallon. I noticed later that when I turn the key on instead of the fuel pump shutting off after a few seconds it continues to run. I replaced the main relay and other parts but it still does it. Any help would be appreciated.
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Old Jul 28, 2018 | 06:06 PM
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Default Re: Fuel out of intake

Where exactly is the gas coming out of?

Dont attempt to crank it anymore, it may have filled the cylinders with gas. I would pull the oil pan off too and drain everything out of it.
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Old Jul 28, 2018 | 06:31 PM
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Default Re: Fuel out of intake

It seems to be filling up the the intake manifold since the fuel pump won’t shut off.
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Old Jul 28, 2018 | 07:49 PM
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Default Re: Fuel out of intake

Is it DPFI or MPFI?
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Old Jul 28, 2018 | 08:03 PM
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Default Re: Fuel out of intake

91 Si multi point
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Old Jul 29, 2018 | 04:43 AM
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Default Re: Fuel out of intake

Anything aftermarket on there - a nitrous 'wet' kit? Is it possible to check the fuel pressure? I agree with the post above, you need to carefully clean it all up and find out where exactly the gas is coming from.
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Old Jul 29, 2018 | 06:54 AM
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Default Re: Fuel out of intake

Dead battery, fuel pump stuck on. Correlation there? Does the pump run with the key out? What other parts have you replaced?

How long have you had the car? Did someone try to steal it? I think you might have to lift up the back seat and see if some smartass hotwired the fuel pump or jacked up the wiring.

These cars use a return style system. Can you verify the return line lets gas pump back through it when the pump is running? It's the hose that comes off the driver's side of the fuel rail, and goes back to the firewall near the brake booster. Make sure it's going into a bucket and away from your face when you test. If it doesn't, you might need to remove the fuel pressure regulator and see if it's plugged or something.

The only place the fuel lines meet the intake on a stock engine is at the fuel rail, but not before it goes through the injectors. I'm at a loss as to why the intake would fill up unless you had injectors stuck wide open while the schizophrenic fuel pump was running.
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Old Jul 29, 2018 | 07:38 AM
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Default Re: Fuel out of intake

Just a cold air intake and header. I have owned the car for about 5 years. I’ll try checking the return line. It was running great until all this happened.
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Old Jul 30, 2018 | 07:22 AM
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Default Re: Fuel out of intake

Injectors would have to be stuck open for this to happen.
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Old Jul 30, 2018 | 07:37 AM
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Default Re: Fuel out of intake

Already replaced those
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Old Jul 30, 2018 | 08:04 AM
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Default Re: Fuel out of intake

Originally Posted by 2x0
Injectors would have to be stuck open for this to happen.
Originally Posted by EFCIVIC10
Already replaced those
I'm with "2x0" on this for that amount to leak out. Are you sure you replaced them with the correct type? Humor me/us and pull the fuel rail with the injectors off the manifold but leave the connections intact. Turn the key to II and visually verify that they aren't continuously spraying. At least this way you'll have good peace of mind that they aren't the problem.
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Old Jul 30, 2018 | 02:17 PM
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Default Re: Fuel out of intake

Are you 100% sure it is coming from the intake? The fuel hose is just under the intake tube on an EF - is it possible that the leak is from the hose or fuel filter instead?
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