Oil pressure gauge

[domx]

Hi all,

Thanks for adding me. I’m based in the UK and fly an RV7 A that was built in 2006. Lycoming 0-320 160hp motor.

I have an oil pressure issue and have had it checked by an engineer with a calibrated gauge. My oil pressure reading seems to be about 20 to 30 psi below the actual pressure. I bought a new transducer from Vans recently and fitted it today. This hasn’t fixed the problem so I can only assume it’s the gauge that needs replacing.

It would appear that the gauge I have is no longer made or supported, so I wondered if anyone had one lying around having done a cockpit upgrade, I would be willing to sell it to me and send it to the UK. If that’s a pain to do, I have friends in the US who you could ship it to and they could send it on to me.

I’m attaching a photo of my gauge and, as you can see, the oil pressure reading in flight is low.

Thanks in advance,
Dom

 

[gasman]

More than likely it is a bad ground. Go to Van's site and download
the install sheet for this gauge and follow the troubleshooting instructions.
I don't think you need to replace the gauge.

 

[domx]

More that likely it is a bad ground. Go to Van's site and download
the install sheet for this gauge and follow the troubleshooting instructions.
I don't think you need to replace the gauge.

Thanks gasman. Will see if I can find the section on the Vans site tomorrow and take a look at the ground.

 

[tom paul]

If you do need to replace the gauge, I have the exact same one that I just pulled out of my panel and is available. Let me know.

 

[domx]

If you do need to replace the gauge, I have the exact same one that I just pulled out of my panel and is available. Let me know.

Thanks Tom. Will look into the grounding first and if that’s not the issue, I’ll take you up on that offer. Where in the world are you based?

 

[domx]

More than likely it is a bad ground. Go to Van's site and download
the install sheet for this gauge and follow the troubleshooting instructions.
I don't think you need to replace the gauge.

I’ve also had low fuel pressure readings gasman. Given that the fuel pressure transducer connects just below the oil pressure one, I assume it uses the same ground. Would that be right?

 

[tom paul]

Thanks Tom. Will look into the grounding first and if that’s not the issue, I’ll take you up on that offer. Where in the world are you based?

I live in Brooklyn. Hangar is at KLDJ Linden NJ.

 

[gasman]

I’ve also had low fuel pressure readings gasman. Given that the fuel pressure transducer connects just below the oil pressure one, I assume it uses the same ground. Would that be right?

A dirty ground will change the resistance that the gauge uses to display the reading.