Omc 5.7 smells like gas in oil

[Ppichey]

Hi there,been having motor trouble since I took the boat to a “mechanic”to have my valves lashed last year,after he did this I have rough idle and sounds like it’s missing,oil on dipstick is at the right level but smells like there is gas in it,any idea where I go from here?thanks in advance!!!!

 

[Scott Danforth]

first, is there fuel in the clear tygon hose coming from the fuel pump - yes or no?

If yes, you need a new fuel pump

if no, is there fuel pooling in the bottom of the intake from the welsh plugs? yes or no?

if no, then change oil and monitor. if it happens again, it could be fuel pump has ruptured internal diaphragm and the tell-tale hose is plugged up.

 

[Ppichey]

first, is there fuel in the clear tygon hose coming from the fuel pump - yes or no?

If yes, you need a new fuel pump

if no, is there fuel pooling in the bottom of the intake from the welsh plugs? yes or no?

if no, then change oil and monitor. if it happens again, it could be fuel pump has ruptured internal diaphragm and the tell-tale hose is plugged up.

I put on an electric fuel pump last year and was running good until all this from carter,still check the same?

 

[kenny nunez]

Is the electric fuel pump wired through a oil pressure safety switch?

 

[Ppichey]

It looks like it just goes through a relay,I know it’s marine but I didn’t hook it up

 

[Bondo]

Hi there,been having motor trouble since I took the boat to a “mechanic”to have my valves lashed last year,after he did this I have rough idle and sounds like it’s missing,oil on dipstick is at the right level but smells like there is gas in it,any idea where I go from here?thanks in advance!!!!

Ayuh,..... Bring it back to 'em,..... They got the valves too tight,.....

 

[Ppichey]

Thank you for the responses,I will let you know what I find out,have to go somewhere else,he doesn’t work on boats anymore,just cars,think he was just trying to make a buck and didn’t know what he was doing

 

[kenny nunez]

If you turn on the ignition does the electric fuel pump start running, it is not supposed to. That is the purpose of the safety switch, it is only closed when there is oil pressure.

 

[Ppichey]

If you turn on the ignition does the electric fuel pump start running, it is not supposed to. That is the purpose of the safety switch, it is only closed when there is oil pressure.

Yes it is wired to the key switch I believe

 

[Ppichey]

Well ,finally figured out what is going on with this motor,apparently the “pro” caused detonation in number 8 cylinder and burnt one of the valves,have a marina fixing the problem now,thank you for your responses!figured I would let you know what happened!