If the engine is four-cycle, the valve seals may be worn, causing a small amount of oil to seep into the piston cylinder or combustion chamber. If it is two-cycle, the oil/fuel mix may have a little too much oil.
A Briggs and Stratton L head twin engine wills pit gas out of the carburetor and flood out when starting if the diaphragm has been damaged. This will cause excessive fuel to enter the carburetor.
Yes, the linkage on a Briggs and Stratton motor can cause it to surge if it is misadjusted or damaged. This linkage controls the throttle and governor, which regulate the engine's speed and performance. If the linkage is sticking or not functioning properly, it can lead to inconsistent engine speeds, resulting in a surging effect. Regular maintenance and inspection of the linkage can help prevent this issue.
Most common cause of surging is a dirty/clogged air filter.
The most common cause of engine surging (rev up and down) is a dirty air filter.
The most comon cause of an engine that keeps revving up and down (aka surging) is a dirty air filter.
Maybe no juice in the battery.
The most common reason would be the ignition coil is bad. The worst reason would be a broke rod, but you should be able to a rattle inside the engine where the broken part is knocking!
loose line,[sucking air] hole in primer button, no gas,
If your 5hp Briggs & Stratton engine won't stay started, it could be due to several issues. First, check the fuel to ensure it's fresh and reaching the carburetor; old or contaminated fuel can cause starting problems. Additionally, inspect the air filter for clogs and the spark plug for wear or fouling, as both can hinder performance. Lastly, ensure that the carburetor is clean and functioning properly, as dirt or debris can affect fuel flow.
Coils on a Briggs and Stratton engine may fail due to several factors, including overheating from prolonged use, exposure to moisture or corrosion, and electrical issues such as short circuits or faulty connections. Additionally, improper installation or alignment can cause stress on the coils, leading to premature failure. Regular maintenance, including checking for debris and ensuring proper ignition timing, can help prolong coil life. Addressing any underlying issues in the electrical system is also crucial to prevent recurrent failures.
Your Briggs and Stratton lawnmower may start fine and then quit due to fuel issues, such as clogged fuel lines, a dirty fuel filter, or old fuel that has lost its potency. It could also be related to air flow problems, like a clogged air filter, or ignition issues, such as a faulty spark plug. Additionally, overheating due to low oil levels or a malfunctioning cooling system can cause the engine to shut down. Regular maintenance can help prevent these problems.
Try cleaning or replacing the air cleaner. A clogged air clearner will make the engine run rich (like having the choke on). The rich mixture will cause the blackish smoke. The fileter may not even look very dirty, but the element can still be plugged and cause a problem similar to what you describe.