fuel pressure release - Ford Mustang Forum
 
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post #1 of 8 (permalink) Old 09-08-2009 Thread Starter
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fuel pressure release

Planning on changing fuel filter this wkend. How do you release fuel system pressure? Did see see burp valve on fuel rail? Thanks.

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post #2 of 8 (permalink) Old 09-08-2009
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Originally Posted by Vapor98GT View Post
Planning on changing fuel filter this wkend. How do you release fuel system pressure? Did see see burp valve on fuel rail? Thanks.

There's really no way to release it. You just have to let it sit for at least 30 minutes. The manual says to pull one of the fuses(I forgot which one) but you can just disconnect the battery too.

Fuel is going to come out of the lines no matter if there is zero pressure or not because the filter sits right in the middle on the bottom so it's coming from both directions.


If they play, I spray.
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post #3 of 8 (permalink) Old 09-08-2009
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you can pull the fuel pump fuse or relay and crank the engine (it wont start) until the fuel pressure is zero. Bleeding pressure off when it is pressurized is a pain because you end up having to pull about 2 cups of fuel out..

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post #4 of 8 (permalink) Old 09-08-2009 Thread Starter
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Thanks guys. Is there a good blast of fuel if the car sits for 30mins to 1 hr? Not sure how much bleed down there is when the car sits for awhile?
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post #5 of 8 (permalink) Old 09-08-2009
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Don't worry too much about it. Just make sure you have a few rags on hand.

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post #6 of 8 (permalink) Old 09-09-2009
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yeah, pull the green tab and and wiggle line loose, let er drip, its not all that much. Never had it come spraying out, just running down.

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post #7 of 8 (permalink) Old 09-09-2009
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Don't worry too much about it. Just make sure you have a few rags on hand.
Put out the cigarette and don't have your shop light near. (Fuel on a hot bulb >> fire)
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post #8 of 8 (permalink) Old 09-09-2009
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And the gas will look like black coffee.

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