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Posted by: kkid Jan 15 2009, 05:12 PM

Please educate me if you know.

This is the back side view of a fuel pressure gauge that I bought today. And I noticed there is a very small screw in the center of the inlet.

Don't know what to do with it.

Thanks in advance!

Posted by: kkid Jan 15 2009, 06:04 PM

Anybody?

I am excited to use my first pressure gauge today.

Please tell me what to do with the small screw.

Should I screw it out or screw it in?

Posted by: So.Cal.914 Jan 15 2009, 06:10 PM

It is probably how they calibrate it. Don't mess with it. What make and model?

Posted by: kkid Jan 15 2009, 06:22 PM

Thanks Paul,

It's a Summit product.

http://store.summitracing.com/partdetail.asp?part=SUM-800260&view=1&N=700+

But if it's left as is, where does the fuel go in from?

There is no other hole.

God, I feel stupid!

Posted by: Aaron Cox Jan 15 2009, 06:30 PM

Does it block the hole completely?

The pressure either pushes against that screw (and then the gauge reads that pressure) or it goes around the screw into something else

Posted by: kkid Jan 15 2009, 07:09 PM

Yes, it blocks the hole completely and looks to be tuned only by an eye glass screw driver.

I really want to take it out because I really don't know why it's there.

Thanks!

Posted by: So.Cal.914 Jan 15 2009, 07:35 PM

Hi Aaron!

I thought the same thing. Googled it but ran into a wall. I would not remove it until you contact their tech support.

Posted by: southernmost914 Jan 15 2009, 07:36 PM

It's supposed to be there. It's liquid filled.Just install it and let it be.

Steve

Posted by: So.Cal.914 Jan 15 2009, 07:41 PM

He might know that by now.

Posted by: kkid Jan 15 2009, 09:57 PM

I just installed it and worked fine.

I still wonder how the fuel got into the gauge unit since it looked to be plugged but it is OK.

The gauge showed 30 psi at the fuel rail.

Thanks everyone!