No fuel to spark plug Briggs & Stratton #12T402-2136-F8
Ok. I’ve cleaned the carb (extensively), even put on a new one. Changed the oil, cleaned the fuel lines (all), new air filter, new spark plug, cleaned the gas tank, new fuel, everything I can think of. All gaskets are present. There is no fuel filter on this model. Throttle and choke checked. No gas leaks, no oil leaks. Any ideas? (Same thing is happening on my TROY built weedwacker also-weird).
Pls help!
Nicky
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@onlyonenicky do you have gas in the fuel bowl on the bottom of the carburetor? Does your engine start if you pour a little fuel into the carb?
da oldturkey03
Yes, there is fuel in the carb bowl. Everything is good until I try to start it and then no fuel gets to the spark plug.
da Onlyonenicky
Nope. Not even when I try carb cleaner
da Onlyonenicky
@onlyonenicky okay so you have more than a fuel issue. You also have a spark issue. When you pull the spark plug out and ground it against the engine block, then try to start your engine, do you see a spark (can't do it in a bright light)?
da oldturkey03
Carburetors may form deposits blocking fuel flow as a result of ethanol in gasoline. This may require removing and disassembling the carburetor to clean and remove hardened buildup from ethanol absorbing moisture. Ethanol will attack rubber and seals while moisture may corrode aluminum and brass parts. The best way to check for a working carb is removing the spark plug after several failed starts - the plug should be wet and smell of fuel.
If spark isn't seen as suggested with a spark test then the ignition system may be faulty. As I understand B&S engines, magneto ignition uses a flywheel with magnets generating voltage from a magnetic pickup that's converted to high voltage for spark.
da F Dryer
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