SERVICE MANUAL NUMBER 30
TROUBLESHOOTING
Excessive Oil Consumption
Cause
Special Information
One quart of oil consumed in 5-15 hours
of operation at wide-open-throttle (espe-
cially in a new or rebuilt engine) is normal
Normal consumption
Clean bilge, run engine with clean white
paper on bilge floor, locate oil leak(s)
Oil leaks
Oil too thin
Oil diluted or wrong viscosity
Oil level too high
Drain holes in cylinder head plugged
Defective valve seals
Oil will flood valve guides
Intake manifold gasket leaking
Worn valve stems or valve guides
Defective oil cooler
Crack in cooler tubes
Glazed, scuffed, worn, stuck, improperly
installed; ring grooves worn; improper
break-in; wrong end gap
Defective piston rings
Out of round, scored, tapered, glazed;
excessive piston to cylinder clearance;
cracked piston
Defective cylinders
Excessive bearing clearance
INDEX
90-863161 SEPTEMBER 2000
Page 1C-17
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 496 CID |
| Model Year | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(2 votes, average: 4 out of 4)
Marine readers have rated Mercury MerCruiser 496 CID 8.1L Gasoline Marine Engines Service Manual Number 30 4.0 out of 4.0 based on 2 product reviews. How many openings for crankcaseventilation is there on
Merc 496 HO ?
Great down load . it was all there an more