Oil pressure for Cummins 6CTA

[Lau Fook Gah]

I’ve this issue when starting Cummins 6CTA engine , oil pressure read 100+ psi at idling 650rpm . After few minutes, psi goes down to 30. Rev the engine rpm 1200, psi goes up again to 100+ and a few minutes , it backs down again to 30 psi. Repeat this motion till Rpm reach 2200 before we start our journey.
Recently this warmth up process is taking much longer time … Regular yearly maintenance and Oil change less than 50 hrs operation. What goes wrong ? What do You think ?

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[Lau Fook Gah]

Hi Rob,
Change new oil pressure sender, order from SbMar.
Wow! works great !
Thanks !

[Rob Schepis]

Start with setting up a quality mechanical gauge at the main oil galley for testing purposes so you know EXACTLY what you have. Probably a failing sender. Oil senders can fail with time as they do have moving parts, unlike temp senders…

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Lau Fook Gah

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