got a question about my 92 3.9

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got a question about my 92 3.9 - 5/2/2008 10:10:39 AM    ispeedfrk8537 Posts: 4 Joined: 4/9/2008 Status: offline the oil pressure is low like 25psi while driving and the truck sounds like a diesel ratalling and knocking do you think it could be the main bairing that are bad and thats why I have low oil presure Post #: 1

RE: got a question about my 92 3.9 - 5/2/2008 8:55:31 PM    codydakota   Posts: 335 Joined: 3/7/2006 Status: offline sounds more like a timing issue, 3.9's have an issue with this (in reply to ispeedfrk8537) Post #: 2

RE: got a question about my 92 3.9 - 5/2/2008 9:36:04 PM    jlbritt1 Posts: 80 Joined: 2/27/2008 Status: offline Main could be the problem, but start with the simple (and cheap) things first. How's your oil level, what condition is the oil in, is the oil pump working properly, is the pickup partially clogged, and I've never heard of the timing affecting the oil pressure, but it's worth checking. With a leaky main you'll lose oil pretty quick, especially with pressure that low. Definitely need to find the problem before driving it anymore, you'll make the problem a lot worse if you don't. _____________________________ If GOD be for me, then who can be against me? (in reply to codydakota) Post #: 3

RE: got a question about my 92 3.9 - 5/3/2008 10:53:28 AM    kahanabob   Posts: 131 Joined: 9/4/2006 Status: offline try addind a bottle of Lucas to the oil. I had to retard my timing ever so slightly to stop the knock sound when going up hill. (in reply to jlbritt1) Post #: 4

RE: got a question about my 92 3.9 - 5/3/2008 12:52:47 PM    indio17   Posts: 20 Joined: 1/5/2008 Status: offline Well i replace the oil pomp in mine to, and it is the same as yours. a '92 3.9 liters the oil pomp its only about $28 . But it's a all day work. How many miles your truck has?. You may find out that replaicing the oil pomp it wont hurt any, and you'll have less thinks to worry about.Or you may want to spent a $100 to take your truck to a mechanic and see if it is not a bookend head of your motor the one its causing the noise (in reply to kahanabob) Post #: 5

RE: got a question about my 92 3.9 - 5/3/2008 1:04:51 PM    indio17   Posts: 20 Joined: 1/5/2008 Status: offline i forgot to ask you for a pic of the left side of your throttle body in particular i will like to see were it goes the air house that is under the PVC valve house. I been trying to figure it out with the tag under the hod but i dont understand it. if you do that; I will really appreciate it. (in reply to indio17) Post #: 6

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