flat

Well-Known Member

• Nov 17, 2015

• #1

Guys

I fitted one of these (cheap) electronic oil pressure gauges and matched sender
http://m.ebay.co.uk/orderDetails?itemId=290947927681&txnId=1233551851019

Via a T piece on the end of a 500mm length of braided steel pipe.

On tickover the oil pressure says 40psi and when driving around 80psi.

Now, the gauge doesn't sit on 'zero' when off but a bit above.

So my question to you is are those figures high? Or is it a naff gauge over reading? Or is the prv in the oil pump lazy?

My money is on naff gauge but thought I would ask. Anyone know how to zero an electronic gauge?

Or shall I ignore the figures and just use it as an early indicator of oil pressure failure?

I use 15w40 oil and the engine pulls strongly, runs clean and has zero oil leaks (recent rebuild).

Cheers

Ed

 

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Kwakerman

Well-Known Member

• Nov 17, 2015

• #2

If its reading about 18psi without the engine running you can probably subtract 18 from all readings which would make it read in the right region. Alternatively if it is new send it back for a replacement.

 

wammers

No longer with us, RIP

Donater

• Nov 17, 2015

• #3

Should be around 25 PSI at idle and 55 PSI at 3000 RPM.

 

flat

Well-Known Member

• Nov 17, 2015

• #4

Cheers guys.

I reckon gauge is duff - have emailed the seller. Will take the sender off and make sure it's clean with a good earth to.

Presumably if the oil pressure was actually that high it would be weeping out of gaskets etc?

 

L

lynall

Well-Known Member

Full Member

• Nov 17, 2015

• #5

Was the gauge at zero before you fitted it?

 

flat

Well-Known Member

• Nov 17, 2015

• #6

lynall said:

Was the gauge at zero before you fitted it?

Click to expand...

To be honest I can't remember, I would like to think it was and that I would have noticed if not.

Tomorrow I will make doubly sure all the terminals are clean and that the sender is earthed properly just in case it's some weird current feedback or something.

 

jamesmartin

Well-Known Member

• Nov 17, 2015

• #7

flat said:

Cheers guys.

I reckon gauge is duff - have emailed the seller. Will take the sender off and make sure it's clean with a good earth to.

Presumably if the oil pressure was actually that high it would be weeping out of gaskets etc?

Click to expand...

no it wouldnt ,but yours isnt

 

flat

Well-Known Member

• Nov 18, 2015

• #8

jamesmartin said:

no it wouldnt ,but yours isnt

Click to expand...

Is there like a maximum pressure?

 

flat

Well-Known Member

• Nov 18, 2015

• #9

The engine can tolerate I mean

 

flat

Well-Known Member

• Nov 18, 2015

• #10

okay 'zero'd' the gauge by dismantling it and setting the pointer on '0'

now follows what i would expect the gauge to say.