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-   -   How Do I Cut The Fuel? (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/how-do-i-cut-fuel-708923/)

GOT-RTRY 11-29-07 06:55 PM

How Do I Cut The Fuel?
 
Need to know how because i want to change my hoses, what sizes do i need?

GOT-RTRY 11-29-07 07:03 PM

Really need to know so i can fix my hose thats bad!!!!!

super-rx7-71 11-29-07 07:31 PM

pull the egi fuse under the hood and crank till it doesnt start anymore there will still be a little pressure not much, or you could unplug the fuel pump.

ohayou88 11-29-07 07:41 PM

go underneath your steering wheel. Between the gas and brake pedal. Look up. Theres going to be a plug with 5 wires going into it. it plugs into a relay. pull it out. that is your fuel pump relay. Turn the car on let it die, crank it and if it doesnt start your good

hp-modz 08-25-09 10:07 PM

I know this is an old post, But it could help those that need to cut the fuel(release the fuel pressure)

open your hatch.
remove your driverside rear speaker cover.
pull back the carpet slightly and you will see a plug.
while the car is running disconnect the plug and within 5 seconds your car will die.
your fuel lines now have no pressure..

before you start the car up after finish the job you've done.
plug in the plug you disconnected earlier.
under your hood near the back of the intake box locate the yellow plug that is hanging freely.
use a small wire or paper clip and bridge both holes of the plug.
turn your key to the on position and youll here the fuel pump priming your system....
once its primed the fuel pump will stop pumping within a few seconds, if it doesnt you have a fuel leak somewhere in your lines and you should look into it..
turn the key off and take the paperclip or wire out of the plug.

your fuel system has just been primed and your car is now ready to fire up....


you can also use that yellow plug to check for fuel leaks..... how you might ask? if your fuel system is leaking the pump will keep pumping due to the fact its thinks the system isnt primed yet.

hope this helps anyone reading this...

Aaron Cake 08-26-09 10:20 AM

In most cases it's not worth the trouble to relieve fuel pressure. Just loosen the clamp and have a rag handy.

Turbonut 08-26-09 10:26 AM


Originally Posted by Aaron Cake (Post 9453356)
In most cases it's not worth the trouble to relieve fuel pressure. Just loosen the clamp and have a rag handy.

This is especially true after the car sits for a period of time. I've always changed the filter after letting the car sit in the garage overnight and never a problem, just some residual fuel when the lines are removed. Now, if you're going to change the filter or remove a fuel line right after the car has been run, I'd be cautious.

RotaryRocket88 08-26-09 02:46 PM


Originally Posted by Aaron Cake (Post 9453356)
In most cases it's not worth the trouble to relieve fuel pressure. Just loosen the clamp and have a rag handy.


Originally Posted by Turbonut (Post 9453372)
This is especially true after the car sits for a period of time. I've always changed the filter after letting the car sit in the garage overnight and never a problem, just some residual fuel when the lines are removed. Now, if you're going to change the filter or remove a fuel line right after the car has been run, I'd be cautious.

+1. I have never de-pressurized the fuel system before undoing the fuel lines. If the car sits overnight, pressure will slowly bleed off to next to nothing. Pulling fuel lines with a hot engine is not a great idea anyway.


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