Lawn Mower Has Spark And Fuel But Will Not Start

If the engine is over filled and smells like gas the problem is in the carburetor. Simple things can prevent those mowers from starting.

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This video from Sears PartsDirect shows how to troubleshoot when your walk-behind lawn mower wont start due to spark plug and ignition problems.

Lawn mower has spark and fuel but will not start. The motor has spark compression and fuel but will not start. I wound the battery flat trying to start and finally got it going. If it does start and keeps running the carb cleaning and spark plug cleaning did the job.

The problem could be that the spark plug is loose dirty or faulty in some way. I tested spark with an inline spark tester and it confirmed that there is spark. Running them with No oil or low oil can prevent them from ever starting again.

To fix this problem and make the mower start remove the spark plug clean off any debris and return it. The alcohol in the ethanol attracts moisture and the moisture corrodes the carburetor. A lawn mower not starting doesnt necessarily mean the fuel is not reaching the engine or spark plug.

Most mowers will use this type stopstart system others manufacturers may incorporate the stopstart function with the throttle lever. Also put enough gas in the tank to ensure gas is. Discussion Starter 5 Dec 23 2011.

Most fuels today are an ethanol blend and this is causing clogging of carburetors if left in the mower over the winter. As you know bad gas or a dirty carburetor is the most likely reason your mower wont start. The float needle and seat are not regulating the fuel level in the carburetor.

I have an MTD Yard Machines 22 push mower with a BS 500 series 10T502 0500 E1 50hp motor. My Kawasaki compact lawn mower winds over has spark and fuel but takes a long time to start with choke onchoke off accelerator up or down it still takes a long time to start. Things like a dirty air filter for example.

Get shopping advice from experts friends and the community. Today were going to troubleshoot a riding lawn mower engine that spins but wont start when the starter motor runs. I do get spark to the plug.

Common stopstart assembly faults Most mowers owners are familiar with the bail lever at the handle bars which must be held in order to start the mower. So can complicated things like the rinky dinky plastic cam shaft gear spinning free on the metal shaft. Place your hand over the carb and run the starterlooking for vacuum at carb.

If your Briggs Stratton engine has a spark but wont run then it is most likely a problem with the gas or air intake in the engine. The lack of proper fuel flow to the carburetor will prevent your mower from starting. I have a craftsman model 917273180.

The purpose of the fuel filter is to filter out all of the sediment from the gasoline. Test the fuel supply Heres a quick test that can often eliminate 2. The spark on the spark plug ignites the gas in the piston but if the air filter is clogged or the gas cant flow then the engine wont start.

It turns over but will not start. When this happens the gas will run into the cylinder and keep it from turning over. I fix a lot of weedwackers but am new to lawnmower repair.

This filter can get clogged up from normal sediment or from stale gas containing ethanol. Once its spinning the engine needs 3 things to runfuel spark and compression. I was done cutting grass and it made a backfire as i was shutting it down.

If it starts but wont keep running even after several squirts of gas and restarting the carb ports are either still clogged or the fuel line is clogged. First I would replace the spark plugit could spark out of the engine but not under pressure with gas. It does not fire when i turn it over the starter just cranks with any sign of trying to turn fire up.

Lawn Mower Won T Start Spark Plug And Ignition Problems Youtube