Lawnmower will not start,when i take plug out petrol runs out of plug even when choke is not on
Your carburator is dirty inside.the needle and seat need to be replaced.the needle holds back the gas when it’s not needed.hope this helped,just let me know…………………………..
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A dirty carburetor is one of the most common causes for a lawn mower not being able to start after sitting unused for months or years at a time.
Use Carburetor Cleaner
Fortunately, you can generally do this without even taking the carburetor out of the engine. Start by purchasing some commercial lawnmower carburetor cleanerOpens a new window, which comes in a simple spray can and will make it easy to clean the inside and outside of the carb.
If no spark appears, check for broken wires, shorts, grounds or a defective stop switch. Once you have confirmed that the stop switch is working, reconnect the spark plug lead.
The most common reason for a no start, not even a click sound, is a totally flat battery, but other likely causes include: Transmission in Drive. Brake Pedal not Pressed. Blade Switch / Lever On.
If the oil levels are too low, the lawn mower will not start and may need to be serviced or replaced. When the lawnmower`s oil level is low, it can cause damage to the engine. If your lawn mower does not have any oil in it, you should check it for leaks.
The spark plugs are worn or damaged
If you find that your lawnmower keeps dying, or keeps stalling while cutting grass, then inspect the spark plugs. Look for signs of damage or wear. Something as simple as a cracked porcelain insulator can mean an electrode has been damaged or burned away.
Check to see if the switch and terminals are free from rust and replace any damaged or broken spark plugs wires as necessary. Alternatively, it could be a bad ignition module. A simple way of testing the ignition module is to leave the car idling for 30 minutes and then tap the ignition module with a screwdriver.
Loss of spark is caused by anything that prevents coil voltage from jumping the electrode gap at the end of the spark plug. This includes worn, fouled or damaged spark plugs, bad plug wires or a cracked distributor cap.
A dirty or fouled spark plug can cause your lawn mower to not start. It can also work itself loose, causing issues. If the spark plug appears to be seated correctly but the engine doesn`t start, a new one may be in order. For a few dollars, this easy fix can get your small engine working again.
If the spark plug and the rest of the ignition system are working properly, you should see an obvious blue spark arcing between the tip of the inner central electrode of the plug and the curved metal top that arcs downward near it as the engine turns over.
If your riding lawn mower engine clicks when you turn the key but won`t turn over, there`s a pretty good chance your mower could have a bad starter solenoid. Other problems, though not as frequent, include a bad starter motor, a wiring failure, a weak battery or a locked-up engine.
When you hear a click as you turn the key, a weak battery, bad starter solenoid, faulty wiring, failed starter motor or a seized engine could be the cause.
Get your can and spray the liquid on the carburettor. Make sure you don`t go overboard with spraying the liquid as it may end up harming the device. Rest assured that WD-40 is potent enough to work its magic even if it is sprayed decently on the carburettor.
Use carburetor cleaner to remove deposits, clogs & debris
Luckily, you can take care of many of these problems quickly and easily; often without even removing the carburetor from the engine.
“Water in the engine is a killer.” Smart move: At the end of the season, take 10 minutes to drain the tank or run the engine dry. Never change or add oil. Moving metal parts need oil, and an engine that`s denied clean oil, and enough of it, will overheat for sure.
Knowing you can expect your residential lawn mower to last you around 450-500 hours is helpful in the decision-making process. The closer you are to the end of the expected lifespan, the more you should consider replacing it if a large issue occurs.
Whether you use synthetic or regular oil, if the spark plug is coated with too much oil and is unable to provide the spark required for the combustion process, the car will not start.
Let old oil circulate through your vehicle long enough and often enough, and it`s possible you could end up with serious (and expensive) engine troubles. However, no or low engine oil levels are more likely to cause a car not to start than old oil is.
Disconnected, dirty or fouled spark plugs are common causes for engines that won`t start. For small engines, spark plugs typically need to be replaced every season or after 25 hours of use. You should also check to make sure the spark plug gap is set correctly.
Condensation inside the gas tank is one culprit, but moisture can also enter the system through a loose or ill fitting gas cap. The best solution is to drain the mower`s gas tank and refill it with fresh gasoline. A clogged fuel filter can also cause a mower engine to die.
A dirty carburetor is the most common cause of a lawn mower that starts and then dies. Other possible causes include: Stale/Dirty Gas. Faulty Choke.
Simply leaving fuel in the tank all winter can wreak havoc on your mower`s engine. Water from condensation can combine with ethanol in the gas, causing clogs, corrosion, and other problems throughout the fuel system. Come springtime, you could be in for a professional carburetor cleaning to the tune of $75 to $100.
Examine the plug cap for arcing and the coil wire for chafing. If damaged, it will cause an intermittent no start. Higher temperatures create higher resistance to the flow of voltage; that`s why coils usually fail when the mowers are hot and start working again when the engine cools.
Remove the air filter and shoot a one-second burst of an aerosol petroleum-based lubricant (not starting fluid, silicone or Teflon spray) directly into the carburetor throat. Try starting. If the engine starts and then dies, that confirms you`ve got a fuel problem.