Hi All, before I tear this fuel pump apart, any idea what’s causing it to weep out of the two holes on the top? engine runs fine otherwise. It’s a
Mikuni pump.
Geo ??
#2
Scrubcadet10
This oneor this one or an opposed twin pump?
Most fuel pumps aren't serviceable, besides the Opposed Twin pumps.
#3
Geochurchi
The middle black one, I have a pic but file is to large for this site.
Geo??
#4
StarTech
Not repairable even if you see screws holding it together.
Although if it's weeping oil, could that be indicative of a blown head gasket? (oil coming through the pulse?) or faulty breather?
That is if it's weeping oil, not gas. if gas, replace the pump.
They leak out of the air breather for 2 reasons
fuel = punchered diaphragm
oil = blown head gasket
And as already mentioned, no service parts available so it is just to satisfy your curosity
#7
Geochurchi
It’s definitely gas, I’ll keep an eye on it ,If continues to leak it will get replaced, engine hasn’t run in years , probably dried out.
Geo ??
or this one 
or an opposed twin pump? 
