Uglytrucking Posted June 17, 2016 Share Posted June 17, 2016 Hey guys, new here. I have a 2004 cx613 vision. ac460p 15speed fuller, 4.11 Spicer ,air ride ,day cab. Used for local dump trailer stockpile work. Today after I dumped my last load I noticed the oil pressure was low. Opened the hood and checked... wow way over full.... we drained the oil and got 4 gallons more than should have been (14 gallons!). Refilled with new oil drive it about 10 miles and the same thing is going on. Just looking for some ideas, I think it might be the plug at the front cover (read that on another post but it was an e7 engine) so I'm wondering if my ac460 is similar. Any suggestions would be so greatly appreciated. This is a great forum and I enjoy reading thru the threads. A lot of good stuff here. Quote Link to comment https://www.bigmacktrucks.com/topic/45701-fuel-in-oilhelp/ Share on other sites More sharing options...
fjh Posted June 17, 2016 Share Posted June 17, 2016 that much fuel is likely coming from fuel transfer pump seal EUp orings is a less common but possible spot! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/45701-fuel-in-oilhelp/#findComment-336932 Share on other sites More sharing options...
Uglytrucking Posted June 17, 2016 Author Share Posted June 17, 2016 The thing is, it starts right up, I would think that if it was anything around the injectors, it would lose prime... the fuel pump was replaced about a year and a half ago, (I know that doesn't mean squat just putting it out there). Just so we're talking about the same fuel transfer pump- passenger side of the engine, back side of front cover, fuel filter on it, looks like a pain to change. Quote Link to comment https://www.bigmacktrucks.com/topic/45701-fuel-in-oilhelp/#findComment-336959 Share on other sites More sharing options...
fjh Posted June 17, 2016 Share Posted June 17, 2016 (edited) Yup ! If it were Injectors it would likely leak out the fuel lines!There is no fuel return on the newer injection set up! Edited June 17, 2016 by fjh Quote Link to comment https://www.bigmacktrucks.com/topic/45701-fuel-in-oilhelp/#findComment-336976 Share on other sites More sharing options...
Uglytrucking Posted June 17, 2016 Author Share Posted June 17, 2016 Marietta Mack is telling me to pull the oil pan and pressurize the fuel line. Should be able to see where it's coming from. I hope I don't have to pull the front covers but it is what it is Quote Link to comment https://www.bigmacktrucks.com/topic/45701-fuel-in-oilhelp/#findComment-336994 Share on other sites More sharing options...
fjh Posted June 18, 2016 Share Posted June 18, 2016 They are correct in that its better than wasting money on a guess! but those pumps do have a bit of a track record . NAH Lkley the worst you'll have to do is pull the EUP Pumps! Quote Link to comment https://www.bigmacktrucks.com/topic/45701-fuel-in-oilhelp/#findComment-337030 Share on other sites More sharing options...
turckster Posted June 19, 2016 Share Posted June 19, 2016 The best thing to do is to pull the oil pan, use the primer pump to build pressure. Sounds like a pretty good leak so you should see it easily. One thing to keep in mind though, if fuel is dripping out around the gear train most likely its a bad seal on the transfer pump but it could also be fuel leaking around the lower fuel galley plug under the front cover. Usually a sign of this is wetness right below the upper galley plug--leaking around the front cover. I have seen quite a few that the plug had backed out completely. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/45701-fuel-in-oilhelp/#findComment-337086 Share on other sites More sharing options...
Popular Post Uglytrucking Posted July 4, 2016 Author Popular Post Share Posted July 4, 2016 Just letting y'all know, it was the fuel transfer pump. We pulled the radiator and front cover anyway, had a front main seal leak, pier steering hoses and stuff replaced too. Went ahead and checked the fuel plugs and re-sealed them. All good now. Thanks for all the good info 3 Quote Link to comment https://www.bigmacktrucks.com/topic/45701-fuel-in-oilhelp/#findComment-338306 Share on other sites More sharing options...
fjh Posted July 4, 2016 Share Posted July 4, 2016 Good job now back to work!😁 Quote Link to comment https://www.bigmacktrucks.com/topic/45701-fuel-in-oilhelp/#findComment-338415 Share on other sites More sharing options...
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