Hi All
Engine problems again.........
A previous owner replaced the original engine in my Vega with a Yanmar
2GM 13hp model. I suspect this was probably a second-hand or
reconditioned unit rather than brand new and as a result I have no
idea how old the engine might be, nor the hours on it.
Never-the-less it has given good servive over three seasons. During
this summer however I noticed a distinct smell of diesel in the cabin
when the engine was running but could not see any obvious leak
although there was always a residue of fuel under the engine after
use. Today I set out to trace the leak and do an oil change and
immediatly noticed that the oil seemed very thin. Smelling it I can
detect diesel.
Calder refers to leaking internal fuel lines as a possible culprit,
but with this engine all the fuel lines are external. The same source
suggests that worn rings, bores etc will suck oil up into the firing
chamber rather than allow fuel down into the sump. The mechanical fuel
pump is situated just above the dip-stick hole but the dip-stick has a
rubber collar that makes a very good seal and a metal skirt that
should prevent anything finding its way in.
Anyone had similar experience or have any ideas how the fuel is
finding its way into the sump?
David
"Little Star" V1696
Engine problems again.........
A previous owner replaced the original engine in my Vega with a Yanmar
2GM 13hp model. I suspect this was probably a second-hand or
reconditioned unit rather than brand new and as a result I have no
idea how old the engine might be, nor the hours on it.
Never-the-less it has given good servive over three seasons. During
this summer however I noticed a distinct smell of diesel in the cabin
when the engine was running but could not see any obvious leak
although there was always a residue of fuel under the engine after
use. Today I set out to trace the leak and do an oil change and
immediatly noticed that the oil seemed very thin. Smelling it I can
detect diesel.
Calder refers to leaking internal fuel lines as a possible culprit,
but with this engine all the fuel lines are external. The same source
suggests that worn rings, bores etc will suck oil up into the firing
chamber rather than allow fuel down into the sump. The mechanical fuel
pump is situated just above the dip-stick hole but the dip-stick has a
rubber collar that makes a very good seal and a metal skirt that
should prevent anything finding its way in.
Anyone had similar experience or have any ideas how the fuel is
finding its way into the sump?
David
"Little Star" V1696