Tdavis251 Posted November 21, 2020 Share Posted November 21, 2020 Thought I'd give this a shot before I go to Mack ok. I have a 06 Mack Granite CV713 with a AI 460 when I brought it I had to replace the oil pan. So I did an oil & filter change plus a radiator flush. Also have codes 8-2 8-5 & 3-1. I know the 8-2 & 8-5 are for the EUP's & the 3-1 is for the exhaust. Had a mechanic tell me the air compressor had went out & that was the reason for the oil coming out from top of filters. Had that replaced & problem still exist has anyone else had this issue. Also truck is making a muffled backfire now. Mechanic told me the backfire was from the EUP's. I saw online where a guy rebuilt his EPU's talked to Mack dealer & they said they dont sell rebuild kits. So do anyone know where to buy kits or do I need to buy new EUP's? Quote Link to comment https://www.bigmacktrucks.com/topic/65016-oil-coming-out-from-filters/ Share on other sites More sharing options...
wilbur Posted November 25, 2020 Share Posted November 25, 2020 The Diesel Store has the best price on EUPs Quote Link to comment https://www.bigmacktrucks.com/topic/65016-oil-coming-out-from-filters/#findComment-464362 Share on other sites More sharing options...
Tdavis251 Posted November 27, 2020 Author Share Posted November 27, 2020 Thanks will check them out.. Quote Link to comment https://www.bigmacktrucks.com/topic/65016-oil-coming-out-from-filters/#findComment-464446 Share on other sites More sharing options...
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