Excessive oil use,reduced RPM,s

pontoon chief

Petty Officer 2nd Class
Joined
Aug 9, 2004
Messages
116
I am working on a OX225 saltwater series Yamaha motor.I had a few issues with the remote oil system and then the oil sending unit in the oil tank on the motor.I got thse problems solved only to discover that the fuel filters and the VST unit filters were in need of replacement,as the motor would shut down at high RPM.
That issue was resolved,however now the boat uses excessive oil when used.The boat used almost 8 qts of oil on sunday to go less than 7 miles.The motor will not reash 5000 RPM at the top end,and it is very sluggish at both top end and the lower RPM,s.
I did nothing to the motor(that I am aware of) that would make it use this much oil.
I worked on the remote tank filter,the oil level sender(replaced),and than replaced the VST filters and the fuel filter.I also put an inline 10 micron filter unit on the boat to replace the dinky factory unit,but I fail to see where this could have anything to do with the excessive oil use.
Any ideas?
 
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