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Oil pressure jumps

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Old 05-03-2022, 11:17 AM
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Car: Chevrolet camaro z28 indy 1982
Engine: LG4
Transmission: Th200
Axle/Gears: 3,23
Oil pressure jumps

I have a strange problem. The oil pressure gauge suddenly peaks from 3 to 6 while the car is idling.
It idles a bit rough still after cleaning the carburettor, but I don't understand why the oil pressure seems to peak.
It peaks for just a second and then back to 3.
Unable to upload the short video I have from it because it was not allowed.
Anyone got some idea why ?

PG
Old 05-03-2022, 12:15 PM
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Oil pressure jumps

An intermittent in the wiring. Also possibly a bad sending unit.

The logic is, if the wire to the sending unit is shorted to ground, the gauge goes to 0; if wire to the sending unit is open (disconnected), it goes to full scale.
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perg (05-03-2022)
Old 05-03-2022, 02:37 PM
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Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Oil pressure jumps

Also, look at the Sending-Unit, to see if it is leaking any Oil.
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perg (05-03-2022)
Old 05-03-2022, 02:55 PM
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Car: Chevrolet camaro z28 indy 1982
Engine: LG4
Transmission: Th200
Axle/Gears: 3,23
Re: Oil pressure jumps

Originally Posted by vorteciroc
Also, look at the Sending-Unit, to see if it is leaking any Oil.
Thanks I will check that.

I have a feeling that the engine stalls just for a fraction of a second at the same time......
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