Oil gauge

Just fitted oil gauge to my 68 baja, however, it is not reading correctly. It is showing 60 PSI at idle but goes straight to the stop, 100 PSI, as soon as I use throttle. Any help with why this happens would be good.
Thanks

you havent crossed over the wires at one end or another have you

barls wrote:you havent crossed over the wires at one end or another have you

Nah, don't think so. I tried connecions other way round and got nothing.

Either the sender doesn't match the gauge correctly or you have too much oil pressure from possibly a sticking pressure relief valve or too large oil pump.

baghall wrote:Just fitted oil gauge to my 68 baja, however, it is not reading correctly. It is showing 60 PSI at idle but goes straight to the stop, 100 PSI, as soon as I use throttle. Any help with why this happens would be good.
Thanks

Best of luck if You can get the gauges to work correctly..
I never could... lol

LEE

68AutoBug wrote:

baghall wrote:Just fitted oil gauge to my 68 baja, however, it is not reading correctly. It is showing 60 PSI at idle but goes straight to the stop, 100 PSI, as soon as I use throttle. Any help with why this happens would be good.
Thanks

Best of luck if You can get the gauges to work correctly..
I never could... lol

LEE

Thanks Lee for filling me full of hope! lol

those are fairly high figures but is that on a stone cold engine?
pressure will always be considerably higher when its cold
even my old worn 1600s when cold idle at 50psi
the pressure releife valve should stop it going much higher though

like matt said the plunger might be stuck in its bore

I am very interested to hear what the cause is.

But as an industrial instrument technician in a previous life I will suggest you check/compare your pressure gauge against another pressure measurement before tearing into the machine it is attached to.

Uber Kafer wrote:I am very interested to hear what the cause is.

But as an industrial instrument technician in a previous life I will suggest you check/compare your pressure gauge against another pressure measurement before tearing into the machine it is attached to.

Yeh know what you mean. I still have to drive it as it is my everyday driver. Idiot light is suddenly on permanantley (need to learn how to spell) and I have all of a sudden lost all my dash lights. Just no time till weekend to chase up problem.

Any feedback?

Did you check for any blown fuses?

Do you have a 30mm pump? If so you need to drill the return passage on the oil relief valve to 8mm as its stock 5mm which is far to small for the GPM of the 30mm pump.

check this.

http://www.thesamba.com/vw/forum/viewtopic.php?t=280293&start=0

Fit a mechanical gauge into the oil sender socket and get a reading from there first.