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Curtis B.
Curtis B., Technician
Category: Agriculture and Farm Equipment
Satisfied Customers: 28329
Experience:  Technican turned service manager on multiple lines of equipment and rental equipment.
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I checked the breather tube on the carb..seems OK. installed

Customer Question

I checked the breather tube on the carb..seems OK. installed new tube from dip stick tube to fuel pump. Put a loop in tube..oil stills exiting out of breather port in fuel pump
Submitted: 1 year ago.
Category: Agriculture and Farm Equipment
Expert:  Curtis B. replied 1 year ago.

High crankcase pressure from worn rings or valves, causes the oil to exit vents! But oil thinned from gas contamination is more common.

Customer: replied 1 year ago.
Just so we are all on the same page. This issue is with a Briggs and Stratton 21 hp single on a riding mower. The equipment is just over three years old. Should there be a ring or valve issue at this age?
Expert:  Curtis B. replied 1 year ago.

Not under normal situation! High hours of use? Ever been run on oil? What oil are you using? Have you tried it with new oil?

Customer: replied 1 year ago.
I guess its normal usage. Located in Hawaii so its year round. Replaced head gasket 6 months ago. Never ran out of oil.
Can try new oil idea. Using HD 30 master mechanic. Could the dipstick tube and ring be an issue.
Expert:  Curtis B. replied 1 year ago.

No, dipstick has to hold the pressure!

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