14.5 hp briggs & stratton backfire issue

[steveandjere]

If it's been sitting for 2 years, you may have corrosion in the fuel solenoid. Remove the solenoid from the carburetor bowl and see if the plunger moves up and down. If it's stuck, clean it good with carb cleaner. Then test the solenoid by grounding it to the engine and touch the solenoid power wire to the positive battery terminal to make sure the plunger works. If it works, reinstall the solenoid and see if it still backfires. If the plunger doesn't move, you may have a bad solenoid.

I replaced the Carb with a new one. wondering if there is a way to adjust it...

 

[steveandjere]

Has the machine always done it or has it just started recently?

Person we got it from had said it ran fine 2yrs ago

 

[mechanic mark]

Its a Simplicity Riding Mower Model 1693911

Briggs And Stratton Engine Numbers 287707 0224-01 960815ZD

Lawn Tractor Manuals | Riding Mower Manual | Simplicity Mowers

Results

Engine & Carburetor Backfire | Mower & Small Engine Repair | Briggs & Stratton FAQ

 

[pugaltitude]

The 287707 will be ohv.

Common thing on the ohv for engine farting and backfiring is the a blown head gasket.

It blows between the valve chamber and the cylinder.

 

[mglawnservice]

What were the valves set at?

Here is a link to the head assembly from Briggs,

http://www.briggsandstrattonpartstore.com/?gclid=CICp54Ta674CFcdFMgodQj8A1g#/Briggs_%26_Stratton/287707-0224-01/Head%2c_Valve_Gaskets%2c_Oil_Filter%2c_Dipstick/287707022401/27190003

Link to look up any group of parts for your motor
http://www.briggsandstrattonpartstore.com/?gclid=CICp54Ta674CFcdFMgodQj8A1g#/s/BRG/287707-0224-01//1

Not sure about the fly wheel key, in some models if a little play is present it can affect the timing

 

[steveandjere]

UPDATE.. Mower running great it ended up being a sticky intake valve. replaced the head reset all gaps and it runs great. thanks for all the help everyone :wink: