OMC 4.3 LG fuel pump blows oil?

[bandsaw48]

Is it possible the mechanical fuel pump could blow crancase oil if the tube (supposed to run to carb) is cut and hanging below fuel pump? Thanks Greg

 

[Haut Medoc]

Re: OMC 4.3 LG fuel pump blows oil?

Welcome to iboats Yes! <br />and that cut hose is a very dangerous condition! <br />That hose is there to vent gas if the fuel pump diaphragm ruptures...<br />It is supposed to prevent fuel from going into the bilge creating explosive fumes <br />Replace your fuel pump with the proper marine rated fuel pump now!<br />Fix/replace that hose to the carb. too....<br />You are fortunate not to have blown yourself to smithereens! <br />I would not even try to start it again with out a new pump...<br />Check your oil for signs of gas, too.....JK

 

[bandsaw48]

Re: OMC 4.3 LG fuel pump blows oil?

Thank you! I now understand how important it is. There is no fuel leaking and I do have enough upstairs to lift the covers and run the blower before start up so hopefully I won't be smithereened. So if the fuel pump membrane is fine, the tube can actually discharge crankcase oil?<br />Thanks again, Greg

 

[Haut Medoc]

Re: OMC 4.3 LG fuel pump blows oil?

No, your pump is not fine....<br />There should never be anything in that tube but air......<br />Check your oil for signs of gas....<br />My advice is to replace it!.....JK

 

[DukesFin]

Re: OMC 4.3 LG fuel pump blows oil?

Please, please, PLEASE:<br /><br />Just get a new fuel pump and all associated hoses/lines. $100 or so is probably much cheaper than your deductable and co-pay (if you were LUCKY enough or un-lucky enough to be alive to use it).<br /><br />When in doubt about the fuel system's integrity, REPLACE IT!!!!!!!!<br /><br />Your vents will most likely not get the fumes out of your crank case if you have fuel in there anyway. be sure to check that!!!<br /><br />We do not want to use a story about you as a lesson to others on what NOT to do in the future!<br /><br />Be safe!

 

[bandsaw48]

Re: OMC 4.3 LG fuel pump blows oil?

Thank you both for the replies. I do appreciate the info. The fuel pump hose was not the source of oil I was seeing in the bilge. It was deficient however due to being disconnected and lying in the bilge (I just bought the boat) so I will replace the clear tube and connect to carb as it should be. <br /><br />Thank you very much.