9/28/2023 0 Comments Lawnmower starter fluid![]() ![]() Sort of like carburetor troubles, a clogged air filter won’t let your engine get as much air as it needs to run.Īir filters can get clogged up for a bunch of reasons. Leftover fuel that sits in the carburetor bowl creates a varnish-like buildup that gums everything up. This is especially likely if your mower has sat for a couple of years without running. Usually, this happens because the carburetor is dirty. Starter fluid might be enough to get the engine going initially, but if the carburetor isn’t delivering the right mix of fuel and air, the engine won’t be able to stay alive. Nobody likes to hear that the carburetor might be the issue, but in this case, it is a very common one. Let’s talk about the possible causes a bit more before getting into the fixes. If you’ve managed to get the engine turned over with the help of some starter fluid, you might not need to go much further to have it running smoothly. Most of the reasons why a small engine starts with starting fluid then dies are related to the fuel supply. Possible Causes of a Mower That Dies After Using Starter Fluid It can get a little bit confusing when trying to figure out what problem you might be having, so I’ll talk about these issues in more detail below. The main reasons for why your lawn mower starts with starter fluid then dies are: issues with the carburetor, a clogged air filter, bad or old gas, spark plugs that aren’t firing correctly, and an improper oil level. On the other hand I have seen a few Briggs engines sheer the fly wheel key from back firing although this has been very rare cases over the last 20 years.3.5 Adjust the Oil Level Why Does My Mower Start With Starter Fluid Then Die? (The Short Answer) He has not had any problems other than the loud back fire. ![]() ![]() Well, it has been about 3 years now, and I am reminded every time he finishes mowing his lawn by that LOUD back fire that he has not yet purchased a new one. A few years ago I bypassed my neighbor’s fuel solenoid, and told him I would replace it when he purchased a new one. But over the years I have not seen many bad problems arise from bypassing the fuel shut off solenoid. It is typically never safe to deviate from the original design of the engine many things can go wrong when doing so. Is it Safe to Bypass the Fuel Shut off Solenoid? This is just a temporary fix as your tractor will back fire when you turn it off, because the solenoid is bypassed, and the fuel will continue to flow into the cylinders. The short answer is YES! In order to bypass the fuel shut off solenoid simply cut the plunger off the solenoid with side cutters, and screw the solenoid back into the bottom of the carburetor. You should see the plunger on the end of the solenoid retract, if it does not retract then the solenoid is most likely bad. Unscrew the solenoid from the bottom of the carburetor, and turn the key to the on position. In order to check if your fuel solenoid is bad, turn off the fuel supply shut off if you have one if not then crimp the fuel line with vice grip pliers. How do I Know if my Fuel Solenoid is Bad? The purpose of the fuel solenoid is to stop the flow of fuel to the engine when the key switch is turned off to prevent the engine from back firing. When energized with 12 volts of power from the key switch on your riding mower the fuel shut off solenoid will open allowing the fuel to flow into the engines cylinders. It is an electrical component that tends to fail over time preventing fuel from flowing into the cylinders. The fuel shut off solenoid is located on the bottom of the carburetor. This is usually a symptom of a bad fuel solenoid on a riding mower. After years of trouble shooting this problem I found one common problem with these newer small engines. I tend to get a lot of customers bring lawn tractors to me with the complaint that the tractor will only run, or start on starting fluid. ![]()
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