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Old 11-10-2013, 04:34 PM   #1
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What's the fuel pressure relief procedure?

it's a 3.8, can't seem to find the procedure online & don't want to buy a book, thanks for any help
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Old 11-11-2013, 02:47 PM   #2
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Disconnect the battery and remove the gas cap, then find the schraeder valve on the fuel rail or fuel line. It looks like a tire air valve. Get a good sized rag under/around it (it's gonna get soaked in gas) and push the pin in using something pointy (don't make any sparks). When you push the pin in, a lot of fuel may spray out (what the rag is for). Once the fuel no longer coming out under pressure, you can release the valve.
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Old 11-11-2013, 05:04 PM   #3
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Quote:
Originally Posted by ZexGX View Post
Disconnect the battery and remove the gas cap, then find the schraeder valve on the fuel rail or fuel line. It looks like a tire air valve. Get a good sized rag under/around it (it's gonna get soaked in gas) and push the pin in using something pointy (don't make any sparks). When you push the pin in, a lot of fuel may spray out (what the rag is for). Once the fuel no longer coming out under pressure, you can release the valve.
This is how i had to do it, but if your fuel pump is stock and not hotwired, you can pull the fuel pump relay and start the car. That will cycle all the fuel thats sitting in the lines and the rail through.
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Old 12-20-2013, 06:45 AM   #4
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With your engine running, pull the fuel pump relay out. The engine will pull the majority of residual fuel through the fuel rail and run until the rail pressure isn't sufficient. To relieve the rest of what fuel at remain, remove your fuel filter. This is always the best time to change your filter as well. Relieving the pressure at the shrader valve will cause a lot of fuel to come out and spill all over your engine or now on to a rag. Either way, that's a huge fire hazard of you relieve 40 or so psi at the engine.
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