No oil pressure at idle - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 3 (permalink) Old 05-19-2016, 04:08 PM Thread Starter
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No oil pressure at idle

Ugh....what else with this pos. Did the injectors and hpop recently. It worked for like a week....now the oil pressure says zero at idle....touch the pedal oil pressure jumps up to where it should be. Engine load is also 100percent just to do 50 (had to get home). The thing also turns over for like 30 seconds to start.
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post #2 of 3 (permalink) Old 05-19-2016, 06:38 PM
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Not positive, stuck relief or check valve?

Edit:
Oops, 6.0L
Check the oil cooler. They tend to plug up.

Last edited by Jasong; 05-19-2016 at 06:52 PM.
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post #3 of 3 (permalink) Old 06-12-2016, 02:09 PM
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I assume your talking about the main engine oil pressure, if so, the stock gauge in the cluster is only a switch that activates at 5-7 psi, it's not a full range oil pressure reading. That said, need to check true main oil pressure, this effects everything including the hpop system. If main oil pressure is low, remove the small oil pump cover behind the front crankshaft balancer and inspect, if small needle bearing are found embedded in the gears and cover, then you have a roller cam follower failure, which means complete engine teardown.

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