Having trouble with fuel pressure on low pressure side.
Tested pressure and big drops to very low at speeds over 2000 RPM
Replaced low pressure fuel Pumps and gaskets. Yamaha Parts through Iboats
Same problem
Checked fuel feed system with vacuum gauge. Less than 3" vacuum
Same problem
Ran on...
Need to replace seals in lower unit. Mech said may be a waste of time with old shaft as new seals may not work.
Nice laser engraved part numbers fully visible.
Is this a newer replacement shaft on my 1980s
Thanks
MRK101830Z82
MERC 3.0L
BLACK MAX...
