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Oil filters dont fill up! Did i install the wrong filters? They came with the filter kit but...


rhpaulin309
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I have notice a unusal delay in oil pressure build up at start up when i did a full service on my 99 ch with an E 7 350. as i removed my oil filters i noticed they were less than half full even though my engine il pressure eventually went up to normal opertating levels. It seem the oil is simply bypassing the filters,wich would point to an open check valve at the oil manifold. I dont have access to an e 7 manual,not sure where it would be located, my guess is it should be close to the oil manifold cause the oil pressure sensor is right above the full flow filters. Truck is parked until further notice, cant get to my local dealer till friday. will have it towed in just to be safe, unless i find the solution myself. where would the check valve be located on a 99 E 7. YES i filled up the filters before starting up the engine..I am now questionning the filters sold to me , they are mack filters, but not the same i usualy use.They are black , but not the same part number. The ones i used in the past are # 485GB3191C. Coud this be the cause.. ( Added Jan 17) Were unable to determine cause of initial delay with oil pressure buildup,( Faulty Oil filter?) Found Check valve to be sitting unevenly in its seat and replaced it. Pressure now goes up within two seconds at startup.Oil filters slowly empty themselves after sitting for a while.Replaced Filters with Donaldson #P553191.

Edited by rhpaulin309
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I have notice a unusal delay in oil pressure build up at start up when i did a full service on my 99 ch with an E 7 350. as i removed my oil filters i noticed they were less than half full even though my engine il pressure eventually went up to normal opertating levels. It seem the oil is simply bypassing the filters,wich would point to an open check valve at the oil manifold. I dont have access to an e 7 manual,not sure where it would be located, my guess is it should be close to the oil manifold cause the oil pressure sensor is right above the full flow filters. Truck is parked until further notice, cant get to my local dealer till friday. will have it towed in just to be safe, unless i find the solution myself. where would the check valve be located on a 99 E 7. YES i filled up the filters before starting up the engine..

Superdog, Rowdy read his last sentence! I dont know about a check valve Im sure Staxx knows.

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If have plate style cooler its rite above filter in housing remove filter to see/get at if bundle style cooler its in filter mount housing coming in from back side of housing , if oil psi is coming up slow could be relief valve in oil pump also might be worn and sticking .

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