dacostadesigns
Cadet
- Joined
- Jun 26, 2017
- Messages
- 24
I have a 1999 40hp elpto. I have been having oil slowly draining into my intake manifold when stored. It then drips out through the carbs if stored tilted or remains in the intake and eventually out of the center section of the motor and out one of the water holes above the lower unit if stored down.
I have come to the conclusion, that it is a result of a small oil line that comes from a fitting directly behind the oil pump (on the block), and into a T at the enricher hose that feeds the intake when primed. It is post enricher, so I am not sure of the purpose, since the mixture coming from the enricher is already mixed. I have not seen this set-up on other motors, so I was wondering if it could be capped at the block. The service manual shows the line, but there is no explanation. The local mercury "experts" are not aware of the purpose either.
One course of action would be to find out why the line continually pumps oil, as this was obviously not mercury's intention. I have removed & confirmed proper installation of the oil pump and seals. At the time one of the orings was a little messed up, but serviceable.
The other course of action would be to eliminate this oil circuit. I cant determine a purpose really. Unless to make sure there is oil in the prime shot of fuel, or as a oil pressure relief whereas the additional oil/pressure is just burnt off in the combustion cycle.
Obviously it was not the best ideas since I have yet to see this set-up on other motors. So the Mercury engineers scrapped it. So do anybody have experience with this or know if I can remove the line and just cap off the fitting at the block? My only concern is that if it is a pressure relief, is it necessary?
I have come to the conclusion, that it is a result of a small oil line that comes from a fitting directly behind the oil pump (on the block), and into a T at the enricher hose that feeds the intake when primed. It is post enricher, so I am not sure of the purpose, since the mixture coming from the enricher is already mixed. I have not seen this set-up on other motors, so I was wondering if it could be capped at the block. The service manual shows the line, but there is no explanation. The local mercury "experts" are not aware of the purpose either.
One course of action would be to find out why the line continually pumps oil, as this was obviously not mercury's intention. I have removed & confirmed proper installation of the oil pump and seals. At the time one of the orings was a little messed up, but serviceable.
The other course of action would be to eliminate this oil circuit. I cant determine a purpose really. Unless to make sure there is oil in the prime shot of fuel, or as a oil pressure relief whereas the additional oil/pressure is just burnt off in the combustion cycle.
Obviously it was not the best ideas since I have yet to see this set-up on other motors. So the Mercury engineers scrapped it. So do anybody have experience with this or know if I can remove the line and just cap off the fitting at the block? My only concern is that if it is a pressure relief, is it necessary?