Hello everyone, I am currently working on a friend's riding mower with a 22HP 724CC Briggs Intek V Twin motor and it suddenly started surging. It starts fine, but it surges at all throttle positions. If I dribble some gas into the carb while it's running or I get the choke set just right, I can get it to run smoothly.
Sounds like a typical carburetor problem or bad gas, but the mower is barely 2 years old and my friend took great care of it. First thing I did after checking for vacuum leaks was pull the carburetor bowl to look for signs of water, corrosion, gunk, etc and to my surprise the carburetor looks like new inside! The fuel filter is clean and the pump seems to be working also since the carb bowl was full every time I took it off.
Does anyone have any suggestions of what else the problem could be? It sure seems like a carburetor problem but as clean as the old carb looked and with a new OEM carb costing $120+ I'm having trouble pulling the trigger and buying it a new carb. Every other time I needed to replace a carb there was pretty obvious signs of contamination.
So if anyone has any ideas of what else to check before replacing the carb I would greatly appreciate it, my friend needs his mower back ASAP and I would hate to replace the carb unnessisarily when I am overlooking something simple.
Sounds like a typical carburetor problem or bad gas, but the mower is barely 2 years old and my friend took great care of it. First thing I did after checking for vacuum leaks was pull the carburetor bowl to look for signs of water, corrosion, gunk, etc and to my surprise the carburetor looks like new inside! The fuel filter is clean and the pump seems to be working also since the carb bowl was full every time I took it off.
Does anyone have any suggestions of what else the problem could be? It sure seems like a carburetor problem but as clean as the old carb looked and with a new OEM carb costing $120+ I'm having trouble pulling the trigger and buying it a new carb. Every other time I needed to replace a carb there was pretty obvious signs of contamination.
So if anyone has any ideas of what else to check before replacing the carb I would greatly appreciate it, my friend needs his mower back ASAP and I would hate to replace the carb unnessisarily when I am overlooking something simple.