I have a 2008 m108x with 500hrs on it, i just bought it and i came to realize that there is fuel leaking into the engine oil. I called the dealer that sold the machine oringally and in april the installed a injection pump amd injector. They did a horrible job amd did everything half ass. What could let the fuel into the oil, im stuck between a rock and a hardplace with this now. Thanks in advance
Fuel in oil!
- Thread starter Jerferrera
- Start date
Is there anyway to tell if thats the problem? Ive been on tge phobe with mutiple dealers and tgey were saying it could be a seal at the injection pump or a high pressure injection libe running throught the valve cover
coachgeo
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L225 w/woods Few Mowers & Back Blade, D722 in Motorcycle (Triumph Tiger), LMTV
If you just bought what they sold as a running good tractor and they replaced things in the injection system yet it still leaks fuel into the engine.... then their repair is faulty, it is NOT a good runing tractor thus they are responsible to make it right IMHO.
Bought at a asis auction.... The dealer that worked on it did the most lazyiest ways, bending the steel mesh instead of taking it off (5 easy bolts) cut the a/c compressor mount (another easy one bolt) and when replaced the starter the just bent the start protector down and left it. Seems like they were is a big rush. If i was so far away now from that dealer i would be knocking at there doors
coachgeo
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L225 w/woods Few Mowers & Back Blade, D722 in Motorcycle (Triumph Tiger), LMTV
Ok your stuck then. Hopefully you got it at a low enough price that the next $teps you go thru make it worth it.
I'd consider pulling all the injectors and have them tested. Re install them with new seats. What exactly did they do to the injection pump? clean it up or put on a rebuilt one or?
check compression.
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Supposed to be new pump, I was thinking they maybe have forgot or i stalled a oring seal wrong on the pump, Im not to sure what u mean by injector seats... If it matters this is a common rail system. The tractor runns very nice
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North Idaho Wolfman
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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Ok lets start from the beginning.
Any dealer that told you " It could be leaking at the injector pump", NEVER go to them for service because they are clearly idiots! Why do I say that, well you don't have an injection pump on that model.
You only have a supply pump and it works completely different than an injector pump, lets just say it's a high volume high pressure fuel pump, and the chances of that that type of pump leaking fuel into the oil would be extremely rare!
Ok first do yourself a huge favor and get the WSM for your tractor!
P/N 97897-13270
Next I'm going to say your problem is probably going to be in the connection from the lines on the common rail to the injectors.
For most they are used to seeing the injectors , and connections on there tractors, not on this model all the connections are hidden inside the valve cover.
Pull the valve cover and look at all the parts very closely, all it talks is one nick in a O-ring or a seal to cause a huge issue.
You could even reconnect the Injectors with the cover off and look for leaks.
Do not over tighten the injector lines as they are just an O-ring seal and over tightening them will just crush and destroy the O-ring.
Also note that the high pressure return also goes to the head and then back to the tank, so check every connection, and honestly wouldn't hurt to just put all new O-rings and gaskets in it while you have it open!
((4) #60) P/N 04814-05110
((5) #30) P/N 1C020-96730
Any dealer that told you " It could be leaking at the injector pump", NEVER go to them for service because they are clearly idiots! Why do I say that, well you don't have an injection pump on that model.
You only have a supply pump and it works completely different than an injector pump, lets just say it's a high volume high pressure fuel pump, and the chances of that that type of pump leaking fuel into the oil would be extremely rare!
Ok first do yourself a huge favor and get the WSM for your tractor!
P/N 97897-13270
Next I'm going to say your problem is probably going to be in the connection from the lines on the common rail to the injectors.
For most they are used to seeing the injectors , and connections on there tractors, not on this model all the connections are hidden inside the valve cover.
Pull the valve cover and look at all the parts very closely, all it talks is one nick in a O-ring or a seal to cause a huge issue.
You could even reconnect the Injectors with the cover off and look for leaks.
Do not over tighten the injector lines as they are just an O-ring seal and over tightening them will just crush and destroy the O-ring.
Also note that the high pressure return also goes to the head and then back to the tank, so check every connection, and honestly wouldn't hurt to just put all new O-rings and gaskets in it while you have it open!
((4) #60) P/N 04814-05110
((5) #30) P/N 1C020-96730
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Which is the WSM? You dont think the seal betweens the pump and housing could allow fuel through? Im no expert on these kubota engines, done mutiple injector set on duramax diesels
North Idaho Wolfman
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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
WSM, {AKA} Work Shop Manual , {AKA} Service Manual
There really isn't much of a seal between the supply pump and the case, and if they changed it for a new pump I wouldn't think that's the issue.
If you really want to check it, pull cover #90 and run it an look for a fuel leak, like I said, highly unlikely.
There really isn't much of a seal between the supply pump and the case, and if they changed it for a new pump I wouldn't think that's the issue.
If you really want to check it, pull cover #90 and run it an look for a fuel leak, like I said, highly unlikely.
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North Idaho Wolfman
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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
No I don't, that's why you need the WSM, it will give you all the specs.
I would think just snug tight should be good, as it's O-ring and gasket seals.
I would think just snug tight should be good, as it's O-ring and gasket seals.
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I'm going to highly recommend taking the tractor somewhere that is familiar with common rail Kubota engines. It's one of those things you dont want to mess up, as those injectors and its components are not cheap. To even get to the injectors requires you to remove quite a bit of stuff. If it's leaking fuel into the motor via the injection system, your dealer should be able to hook up his laptop with the Kubota diagnostic software and more than likely see where there is a drop in fuel pressure to help pinpoint where the leak is.
Well i beleive i found the problem! Opened up the valve covers and foubd the return line bolt going into the head lose (very lose). So poor workmanship ha proven to be the issue again
85Hokie
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BX-25D ,PTB. Under Armor, '90&'92-B7100HST's, '06 BX1850 FEL
WOW. that would do it - That machine must have had someone do the ol "get it out of here as fast as you can method"
Change you oil.....check and recheck - see if you have nailed the culprit. Then go back to the dealer and nail THAT culprit - Ok - kidding on the latter
Hopefully you machine will work as it is supposed to!
Well back to the drawing board! Put it all back together and still leaking fuel.... Ughh. Gunna pull it apart now and send the injectors in to be bench tested, at this point im really hoping for one to be broken and i can just replace it and all new orings