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schrader valve ??

This is a discussion on schrader valve ?? within the General Help forums, part of the LSx Technical Help Section category; Installing the fuel pressure gauge and do I need to remove the schrader valve off the fuel rails? Instructions don't ...

  1. #1
    Spaz is My Mentor SMWS6TA's Avatar
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    schrader valve ??

    Installing the fuel pressure gauge and do I need to remove the schrader valve off the fuel rails? Instructions don't say either way....

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    Senior Member Whamhammer's Avatar
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    Quote Originally Posted by SMWS6TA View Post
    Installing the fuel pressure gauge and do I need to remove the schrader valve off the fuel rails? Instructions don't say either way....
    Does the gage have a "pin" at the fitting? I would think that they would want the valve to be there for safety.

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    You need to remove it.
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    Member sjgreen6's Avatar
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    Exactly, just make sure you have released any pressure from the rail by carefully depressing the valve on a cold engine while stuffing a big rag up against it. Once you are sure you aren't going to take a gasoline bath, use a valve stem tool to remove the schrader valve and stash it and the cap away somewhere in case you ever want to remove the gauge. Wrap the threads on the gauge with several warps of teflon tape then gently install. The real trick is to get the gauge fully tight or very close to fully tight and oriented in the right direction. You may have to try a time or two to get it just right. Do not overtighten it or you will strip the threads on one part or the other or damage the gauge and cause a fuel leak.

    There have been some reports of the gauges leaking. Hopefully you bought a good quality gauge if you are going to leave it on the engine. My guess is the failed gauges were of the cheap eBay from China variety.

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    Member RONS98TA's Avatar
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    Installed a manual gauge on both my TA and truck. I removed the Schrader valve on both vehicles. I've had zero issues. With the valve in place, the gauge won't work. The valve holds the pressure inside the fuel line.
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    Senior Member kingls1's Avatar
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    Lock tight makes a tread salient just for fuel lines and such. Read reports that the tape will break down and either leak or get in the fuel line causing problems with the Guage or a injector. Tape is mostly for plumbing. You can get it at any auto parts, just let it dry a little before starting motor.
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    I think I utilized a thread sealing paste on ours that was rated for gasoline and such.

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    Spaz is My Mentor SMWS6TA's Avatar
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    Well after checking all the parts stores looking for "yellow" Teflon tape found it at Lowe's and Home Depot plumbing sections.

    To no surprise none of the parts clerks knew what I was talking about.

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    Member sjgreen6's Avatar
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    Quote Originally Posted by SMWS6TA View Post
    Well after checking all the parts stores looking for "yellow" Teflon tape found it at Lowe's and Home Depot plumbing sections.

    To no surprise none of the parts clerks knew what I was talking about.
    Guess they are like me, old guy not up to the new. Will have to replace at least part of my stockpile of white Teflon tape now. New thing learned. Just wonder what old thing I now don't remember.
    SMWS6TA likes this.

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    Spaz is My Mentor SMWS6TA's Avatar
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    Steve don't feel back I didn't know either. Glad I asked.

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    Senior Member kingls1's Avatar
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    This is the stuff I used worked very well. http://www.permatex.com/component/do...ket=automotive

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