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CATEGORY LISTINGS > CUMMINS > no oil press for 5 seconds [ REFRESH ]
Thread Title:

no oil press for 5 seconds


Created On Saturday May 01, 2010 11:01 Diesel Talk
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dsells00
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Joined: May 2010

Note Saturday May 01, 2010 11:01 View thread in raw text format
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1995 freightliner fl 70 8.3 cummins. Truck sat for 5 years, put in new batt and fired up and runs great. let it set for a few hours and start and the oil press does not register for about 5 seconds. It can also be heard that there is no press for that five seconds. oil must be running back to pan. Oil has been changed and new filter. Is there a check valve or something that would cause this? I am not going to start untill i find problem. This condition has to be very hard on bearings. thanks dsells00confused

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cinamin
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westcoast
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Joined: Dec 2008

Note Wednesday May 05, 2010 02:11 View users profile View thread in raw text format
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Bottom of oil cooler is a 32 mm hex nut - inside that is the pressure regulating valve , oil pressure at idle is 10 psi minimum - pressure at rated rpm is 30 psi minimum , there is also a spring loaded check valve for the filter by pass which is in the filter head Regards David

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detroit
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