At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
Hi Yaoting pang, I want to help you with your question, but I need more information from you. Can you please add details in the comment box? In order to help you troubleshoot your problem I need to know the make and model of your mower and possibly the engine numbers too.Hi Yaoting pang, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?
In order to help you troubleshoot your problem I need to know the make and model of your mower and possibly the engine numbers too.
You can't post conmments that contain an email address.
The anti backfire solenoid sticking opening doesn't prevent the engine from shutting as you are killing the output of the coil. It does however allows extra fuel into cylinder and exhaust which can create that backfire sound that most experiences on normal shut. The grounding of magneto is what shut downs the engine which in this can be as simple as broken wire to a bad magneto coil.
Most engines hav an anti backfire valve solenoid screwed under the carb bowl. This sometimes sticks due to ethanol gas. When you turn off the ignition, it closes the valve to let the engin run out of fuel. If it sticks closed the engine will not start. Sticken open, the engine will not shut down. It has a single wire going to it. When you turn on the key, you should get power to the solenoid. If you have power to it, then remove the solenoid and clean the needle valve and carb opening. Would be a good time to clean carb also. A good carb cleaner works well. Ethenaol added gas is a real culprit to carbs nowadays.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
I obviously am not familiar with the application here but petrol engines have an electrical ignition system that can simply be turned off to stop the engine. However diesels have super high compression that causes the ignition. Diesels with mechanical fuel systems will continue running until the fuel is shut off or the engine is stalled. The fuel is usually supplied to the injector pump through a solonoid valve where an electrical supply is needed to open the valve and the valve springs shut when the supply is removed. The fault is 90% in my mind associated with the this fuel shut off valve. However there is another way that a diesel engine can find fuel to not allow it to stop. A turbo seal failure can atomise engine oil into the inlet manifold and the engine will continue running until all the is used up.
I had one that did this and it turns out it was the plug on engine that ran to dash switch had a corroded connector in it , vibration from engine made it shut engine off !! just like the key !! it would start right back up run a minute then shut off again !
Have you checked the safety switch under the seat? Operator presence is required on most equipment today to properly function. If the seat switch isn't closed, it will shut the engine down if the parking brake is released and/or the blade PTO switch is engaged. Unplug the seat switch and place a jumper into the seat switch receptacle to the wiring harness; not the male plug to the seat switch. If you can start the mower, disengage the parking brake, and engage the mower blades (with your other switches reconnected) without engine shut down, replace the seat switch.
There are two fan switches on that car; The main one turns the fan on and off when the ignition is on and the car is running. The second switch powers the fan if the ignition is off and the engine temperature is too high, to cool the engine off if it was just shut down. It sounds like your main fan switch has gone bad and needs to be replaced since it's not sending any signal to the fan, while the engine is running.
Your kill wire from the switch to the coil is bad,disconnected or connections dirty...or switch is bad...try disconnecting the kill wire on the coil and using a jumper ground the coil directly to the engine or frame it should shut down if it does it is the wire or switch do the same at the switch if it shuts down it is the switch..if not the wire has a break..good luck..
its likely to be a switch playing you up try hard wireing the switch to see if it stops this cutting out first, do one switch at a time till you fine the one playing up
not enough information on the motor. what year and model? but all yamaha outboards are shut down by the C.D.I. being grounded by the key switch or the emergency kill switch. the cheapest thing to test or replace is the key switch and the emergency kill. with more info on engine I can help you further.
every generator has an auto-shut down system that turns the engine off when over heated..u can dislocate the wire coming out of the engine and into the on/off switch...and then it till never shut off unless u tell it to....
but be carefull!!!!!!!!!!!!!:when u dislocate it...u r turnning off the auto-shut down system...so if the engine over-heats.. it will not shut down...
if u have any further questions email me at [email protected]
I don't think the starter solenoid is involved here. T
There should be a fuel shut off solenoid on the bottom of the carburetor which shuts off fuel when the ignition is turned off -- this is a safety feature as well as protection from damaging backfiring.
This fuel shut off solenoid could be stuck open.
There is a switch under the seat which opens and closes the solenoid depending on whether the seat is occupied. This switch as well as the ignition switch control the solenoid.
Hi Yaoting pang, I want to help you with your question, but I need more information from you. Can you please add details in the comment box?
In order to help you troubleshoot your problem I need to know the make and model of your mower and possibly the engine numbers too.
×