0
Not specified by factory. Theoretical minimum of 60 for an engine to function, it's good to see at least 120. Less than 90, time for a rebuild.
Additional info:
Less than 90 will mean that after you get it started, it will have a hard time coming off idle because of low vacuum. Whatever is causing low compression, may also cause low vacuum (bad exhaust valve, scored cylinder wall, worn or broken piston rings, etc.) Right off of idle is when an engine needs and builds the most vacuum. Off idle is when the carburetor's is making the transition from the Idle Circuit to the Run Circuit. The carb needs the vacuum to start drawing the fuel from the main jet. After RPM's increase, the increased airflow takes over and not only draws the fuel through the jet, but forces air into the carburetor fuel bowl, slightly pressurizing it to force fuel through the main jet.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
Where is the compression release on Briggs and stratton 16.5hp?
It is a part of the camshaft.
How do you repair valve compression ring 18 hp Briggs stratton?
You don't repair compression rings you replace them.
What is the compression of a 3hp Briggs and Stratton engine?
Briggs and Stratton does not release specific compression values. Anything above 120 psi should be just fine, around 90-100 and you're most likely due for a rebuild. A better test is a leakdown test, with can help in determining where compression is being lost.
How much compression is good on a Briggs and Stratton 5hp engine?
any where from 120 lbs to 180 lbs
What is the compression reading for a Briggs and Stratton intek v twin?
It needs at least 70 psi to run.
How much compression is good on a Briggs and stratton 26 hp over head valve twin engine?
Briggs doesn't publish engine compression specs, but 120 is good. 100 is okay. 80 is lousy.
When does a Briggs and Stratton ignite in the cylinder cycle. Should the cylinder be at the top of compression?
No. It should be just past top.
How much compression is good on a briggs and stratton 17.5hp?
90 to 120 minimum in 3 to 5 revolutions of the motor
How much compression is good on a Briggs and Stratton 20 hp engine?
Any thing above 130 lbs
How much compression is good on a Briggs and stratton 15.5 hp engine?
briggs doesn't offer compression ratings for their engines. I will usually pull it 3 to 5 times and look for 90 to 120. anything less is a problem and if it doesn't hold compression there is a problem
Is Briggs Stratton going out of business?
Is the rumor true? Is Briggs Stratton going out of Business?? We were told not to by lawn mowers with the Briggs stratton motors.
Where to find parts for a Briggs and Stratton lawnmower drive gears?
At a Briggs and stratton dealer.
