I have very low psi on a cat c7 engine. I believe the oil pump is going bad. is it possible for the oil pump to go bad and the hui pump still work well enough to start the engine?
Engine: c7 diesel
I checked the psi at the sending unit, replaced sending unit. Psi was low at sending unit. Bypass sending unit to check gages. they worked properly. Only thing is oil pump or ECM.
Hi. Thanks for using JA! I will try and help you out.Yes it is possible. The minimum low idle engine oil pressure spec is 6 psi. That is all the oil pressure needed for the HEUI pump to operate.Let me know if you have more questions or need more help.
23 Years Caterpillar Engine experience.
If you have more questions. Just reply back to this question. I am glad to help.