42 replies to this topic

[postve]

Hey guys

I have the following head scratcher

- new 1310 build
- digital oil pressure gauge - I have two of them
- originally oil pressure looked fine
- now when I fire it up and let it sit, hits 120 psi and does not move
- tried the other digital gauge and displays 150 psi???

I am wondering if the gauges are pooched or possible oil not flowing?

Changed the oil filter yesterday I did notice not a lot in the filter and praying the oil pump is not the issue??!! Thoughts!??

Edited by postve, Today, 10:05 AM.

[nicklouse]

What do you mean by not a lot in the filter?

 

should be full of oil.

 

relive valve stuck?

 

It should allow oil to pass at 60/70psi as standard.

 

The only way to increase the pressure it passes oil is with a longer/stronger spring so it opens at a higher pressure.

[postve]

Nick, with a digital oil pressure gauge is there a relief valve and forgive my lack of knowledge. I simple installed an electronic digital and it has worked before?!

[Ethel]

The relief valve is in the engine. It should bleed surplus pressure off back to the sump. It's under the big hex headed plug near where the oil pressure  sender/gauge attaches. The pressure is sampled from the end of the main gallery, so it'd have to get there via the relief valve & oil filter.

 

The oilway drillings do cross one another, so I wonder if it could be pressure locking the valve from behind???

 

Rogues gallery???

[postve]

Ahh got it and I swapped to a flex line so maybe pull that off today and take a look at the valve spring setup - kinda makes sense as was working initially and now just sits at 120psi - I am terrified to drive the car until resolved. Let me send a picture to make sure I am clear

[postve]

Just testing a link , one moment

https://imgur.com/a/Ey7Iydh

[postve]

Okay meant this link and you mean here right?

https://imgur.com/a/Ey7Iydh

Again when I checked filter little to no oil in there and agreed it should be full

Edited by postve, Today, 10:52 AM.

[postve]

Okay went online and found location so thinking is this could be the problem folks?

[imack]

If you're showing pressure then it won't be the pump. Sound like you have a blockage somewhere between the pump and the filter. Oil filter and feed pipe should be full of oil. Don't run the engine until you've found the issue, you've got no oil feeding the bearings, cam or anything else in the engine. I'd start by removing that flex pipe and inspect. That gallery goes directly to the pump.

[postve]

Agreed 100% imack and relief at not being the oil pump and logical - maybe for starters I might just swap back in the OEM connection pipe as from my limited understanding possible could be the source of my issue but scratching my head as to how that would happen - give me a few as having my morning coffee at star bucks - and old/new pic for viewing in the meantime - my 78/21 JCW

https://imgur.com/a/Ey7Iydh

[Ethel]

The oil pressure is measured after the filter.

 

I'd say investigate the relief valve. If it was a restriction from the transfer pipe/hose it ought to cause the relief valve to open.

[postve]

Thank you Ethel and all, sound advise and I will investigate all this morning and with a DHL strike might take a while to get a new relief valve but let me pop off and show you M8’s, don’t have to drain oil to do it I hope!

[Ethel]

"borrowed" from https://www.nonlinte...te/lubrication/

 

 

[postve]

Thx Ethel and again since I have oil pressure not the pump - fingers crossed and praying - gulp

[postve]

So far so good

https://imgur.com/a/Ey7Iydh