rhpaulin309 Posted January 10, 2013 Share Posted January 10, 2013 (edited) 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 January 17, 2013 by rhpaulin309 Quote Link to comment Share on other sites More sharing options...
Superdog Posted January 10, 2013 Share Posted January 10, 2013 were they full before you started the truck? 1 Quote Link to comment Share on other sites More sharing options...
RowdyRebel Posted January 10, 2013 Share Posted January 10, 2013 ALWAYS pour some new oil into the new filters to fill them up BEFORE you install them....cuts down on the length of time the engine runs without oil when you fire it back up. 1 Quote When approaching a 4-way stop, the vehicle with the biggest tires has the right of way! Link to comment Share on other sites More sharing options...
rhpaulin309 Posted January 10, 2013 Author Share Posted January 10, 2013 The question is'' where would the check valve be on the Oil filter manifold of a 99 E 7 E tech''.. Quote Link to comment Share on other sites More sharing options...
rsb502 Posted January 11, 2013 Share Posted January 11, 2013 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. Quote "Any Society that would give up a little LIBERTY to gain a little SECURITY will Deserve Neither and LOSE BOTH" -Benjamin Franklin"If your gonna be STUPID, you gotta be TOUGH" "You cant always get what you want, but if you try sometimes you get what you need" Link to comment Share on other sites More sharing options...
Superdog Posted January 11, 2013 Share Posted January 11, 2013 Superdog, Rowdy read his last sentence! I dont know about a check valve Im sure Staxx knows.that last sentence wasn't there last night. Quote Link to comment Share on other sites More sharing options...
staxx Posted January 11, 2013 Share Posted January 11, 2013 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 . Quote Link to comment Share on other sites More sharing options...
jakebrake86 Posted January 11, 2013 Share Posted January 11, 2013 I've got the same engine, just 3 years older and not an e tech. I've noticed it taking a good 15-20 seconds to build oil pressure in cold weather. Is that normal? Quote Jake Link to comment Share on other sites More sharing options...
staxx Posted January 11, 2013 Share Posted January 11, 2013 Yes oil is thick in cold weather takes longer to move. 1 Quote Link to comment Share on other sites More sharing options...
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