stihl chainsaw runs for awhile then dies

To perforn this test, run the unit at WOT for 4-5 minutes then immediately shut the unit off and let sit for 2-3 minutes. Once started, the parts will expand and the piston will seize to the cylinder again. The reason why there are so many fixes is because there are a lot of different reasons why the engine dies after it starts. Lean adjustment It manages the devices fuel and air mixture. Receive money-saving advice and special discounts! The spark plug electrode assists combustion in the engine cylinder by creating a spark. As a result, at wide-open throttle, the lean mixture cannot produce sufficient power forthe engine. Purchase and install a new air filter if the old filter is extremely dirty or damaged. worn ring increases gap end when hot and loss of compression causes stall. Then restart the unit and check for fire on the tester. Carefully remove the spark arrestor screen. Any ideas? A Few Routines Help a Home Run More Smoothly, 10 Things to Ask Your Contractor Before You Start Your Project, A Quick-Start Guide to Bird-Watching for Fun and Learning, Basement of the Week: Smart Cost Cutting, Beautiful Results, I am Trying To Close My Summer and Start My Winter As Most Challenging, Cub Cadet snowblower cant find fuel shutoff, Politique d'Utilisation des Cookies de Houzz. Your IP: I've changed the fuel out also. You will need an inline ignition tester to do this. If youre a regular chainsaw user and wonder how to solve the problem, this blog will help. Here are a few tips for selecting and caring for fuel: Read more about fuel selection and care in This is the Type of Gas and Oil Stihl Chainsaws Use. Does anyone know how to fix this? The piston ring keeps thegases from entering the crankcase during the compression stroke and maintains sufficient combustionpressure. I worked fine first year, now it has the same problem as others. This may be caused by a clogged or faulty tank vent. was adjusted just in case turning the Hi and Low screws does nothing. Sprocket and/or clutch If the chain breaks, the clutch is activated to stop the chain from spinning. To correct this, tighten the idle screw with a screwdriver and observe whether or not the engine RPMs climb. Simply put, you run it for awhile, and it vacuums itself out of gas. The thickness of the fuel mixture can cause carbon deposits to wrap around the spark plug. Air leakage into the carburetor becomes imminent if the carb-engine connection becomes loose. If the screw is too loose, the mixture becomes rich. An example of data being processed may be a unique identifier stored in a cookie. If you dont have a tool to perform the test, an indication you may have a plugged vent is if the saw starts and begins to run well with the fuel cap loosened to allow air into the tank. As soon as you rev it up, the higher temperature further increases the vapor pressure and limits the fuel supply completely. It is usually found in the Fuel Tank cap. Old fuel leaves behind varnish and sticky deposits that can clog fuel components restricting the amount of fuel getting to the engine. Ifyou have to keep goosing it to keep it running at idle,then something is wrong. I hope this may help. Dont let go of the fuel line. We like to help other people maintaining their garden and find cool products to write about. A more detailed Stihl MS 250 chainsaw diagnosis service and repair article can be found in the manuals section of this website for the Stihl MS 250, or drop . Locate the fuel filter at the bottom of the fuel tank. The fuel filter is a small cylinder-shaped part located inside the fuel tank. Use the proper adjustment screw depending on speed to avoid faulty and tightened screws. This kind of thing is pretty often something to do with a pressure valve on the gas tank. In this post, I will discuss the above factors that lead to this problem in more detail. For a better experience, please enable JavaScript in your browser before proceeding. 2) bad plug. A valid compression test would go a long way . In general, there are four reasons why a chainsaw runs well until hot. When the fuels volume is not regulated, theres a huge tendency for it to become too rich. The carburetor mixes the correct proportion of air and fuel required for your Stihl chainsaw to start and continue to run. I had numerous problems with it all fuel related.Really it was a matter of tuning the carby but Electrolux refused to sell me the tool to do so, so I made my own and then found they were available as an aftermarket item. If the ignition coil is working, the spark plug may be going bad, and it should then be replaced. If the spark arrestor is clogged, the chainsaw may run stall or run rough. We can easily examine the air filter before checking the carburetor, which maybe causing the chainsaw to stall. Most types follow a ratio of 40:1 or 50:1. Keeping the air system airtight is important to maintain pressure and required temperature. This site is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. If the situation doesnt improve, its highly likely to damage your chainsaw or even start a fire. Chain Its the most important piece of the device, which does the cutting. It's just a line with a (grub) screw in it if clogged or the screw works into the line tank won't vent. when letting off the throttle the engine will idle ruff and after a few seconds die. The thing I can't figure out is what caused it. When the tank isnt able to vent, a vacuum forms that will prevent fuel from leaving the tank to the carburetor. When you find a clogged fuel line, remove it from the chainsaw and clean it to open the line. This will help find the best solution strategy to fix your issue. Check the breather on the fuel tank to make sure it is not blocked. Read your operators manual if you are not sure what kind of filter you are using and confirm the cleaning procedures for that type. One day started surging when hot and then would shut down. flip to run 4-5 more pulls, now it quit all together. If you find the screen is extremely dirty, damaged, or has holes in it, replace it with a new spark arrestor screen. Access to manuals and parts right there makes it convenient.". Should cost about $25. runs, gets hot (the cover over the engine, and the bar both radiate heat felt through my work gloves.I did a quick search and found another forum with small engine experts. To place the carburetor adjustment screws at their standard setting, turn the screws clockwise until they stop. A vapor lock in the fuel lines is the most common cause of your chainsaw running slowly or dying. Install a new one if itsquality has worsened. 2022 LawnMowerForum.com. Then your spark plugis likely to be at fault, so it should be replaced. This is a common problem that mainly occurs with older chainsaw models. It's the small round plug usually near the fuel line connections. Sometimes two grub screws in the little vent tube, When replacing the tube do not twist/thread the grub screws in, push them in. 1) bad coil. Similar project but I am waiting on the counters. Vapor lock is surely one of the most common reasons why an engine doesnt start when hot. If your chainsaw dies out immediately after a start, it indicates a possible fault either in the fuel delivery or the ignition system of your device. You will have to replace the carburetor if this doesnt work. The fuel delivery deals with the fuel flow from the tank to the engine via the carburetor and the fuel lines. Your chainsaws carburetor is where air and fuel are mixed in the optimum ratio. Bad coil, test it with a meter next time it die's. Before making any repairs, shut off your chainsaw, wait for all moving . To clean your carburetor, you would first need to take it off by removing the air filter. Doing so will put the engine at risk of permanent damage. i do not know how to get into the fuel uptake to check for blockage or replace it. Position the chainsaw bar so the chain won't hit anything during adjustment. When it dies, it will NOT restart until it's fully cooled down. The air filter is easily located. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. opening. Feb 27, 2017. Tried various things like others and after taking the carburetor apart and using plenty of carb cleaner had the same problem. Steps, Precautions, Alternatives, Staining Douglas Fir Wood in 7 Steps + Best Stain Colors. I just removed the and it purrs like new now. Nearly every weekend you will find us doing small or big jobs or just enjoying our garden. i also dont know how to check the vent int he gas tank. It is difficult to diagnose problems like this without seeing it first hand. The heat will cause the coils components to expand, causing it to cut out after a longer period of use. Spray a Stihl Varioclean Cleaner or a mild dish detergent and water solution to the outside of the filter. However, a damaged air filter should be replaced. Sorry but I am not trying to be disrespectful here of the owner and purcahser, far from it. Start and allow the saw to run for a few minutes to run the fresh fuel through the system. Also didn't fix the problem. Why does my chainsaw start and dies? This setting varies by model. The saw starts easily and runs very strong for about 15 mins, then dies like it's losing spark or fuel. Ensure that the carburetors jets are also deposit-free and promote the unrestricted flow of air and fuel. From what I've read, my problem is the nature of the beast with these saws. Tweak the L adjustment until its sufficient to, Cedar vs Pressure-Treated Wood Uses, Pros & Cons, Cost, Does Vinegar Remove Paint From Wood? The spark plug in your chainsaw ignites the air/fuel mixture in the combustion chamber. Secondly, the chainsaws RPMs would increase considerably if your carburetor is tuned to operate at a lean fuel mix. I've watched fixit tips on Youtube , but everyone had a differnet solution. After the engine has been running awhile, it dies. Check the filters quality. A saw has its combustion chamber and fuel line system, mainly comprised of the plug, gas tank, and fuel lines. Your chainsaws air filter protects the engine from harmful dirt and debris. Manual fuel pump Its a mechanism that makes the saw engine easily start. i had the fuel line replaced last season. Got it to run briefly by shooting some carb cleaner into the intake. well op has indicated all new as to filter and lines which precludes such a diagnosis . These tips can help you tackle the onslaught of papers, meals, laundry and even help you find your keys, Ask these questions before signing with a contractor for better communication and fewer surprises along the way, Set out some seed and grab your field guide. Then continue to turn it counter-clockwise 1/4 turn further. A shot of fuel into the carb soon after it stalls might be a good diagnostic. You will find it attached to the fuel line. Detach the air filter. Try running without.? Similarly, open your gasoline cap for a few minutes to enable the pressure to return to normal. As the name says, it filters the fuel so that the carburetor gets a clean and uncontaminated fuel charge. Unscrew the gas cap, vent the gasses and try to restart your saw. But, it's alway good to know where the carb. You can also find information on a chain not turning, the engine only running with the choke on, and more. Fix your Lawnmower with our Lawnmower Troubleshooting tool. The carburetor might be clogged. If it passes through, then you have already cleared any stuck debris. While pulling the starter recoil rope, you may notice a loss of compression. you should see a pretty blue spark??? 142.93.111.120 If your chainsaw doesnt stay running, begin troubleshooting by following the steps mentioned below in the same order. Grubs/vent are easy to fix. There are adjustment screws on the carburetor to make these adjustments. Have a Stihl 028 that I picked up used. Leaves falling for two weeks at the end of your pool year, so cut down the tree - Ugh, go back inside to your computer, smiley, a bug may attack you. With our Fix app, you always have a personalized repair guide on-hand. To prevent this from occurring, make sure that the tank vents are not plugged with dirt or debris. It even gives us gorgeous Fall color from there on in. A punctured fuel line can draw air into the fuel system resulting in a chainsaw running sluggish because too much air is being introduced to the cylinder. Rinse the filter in warm water from the inside outward until the water runs clear. If your chainsaw won't stay running, here are the things you can try: Check if the fuel tank's vent holes aren't clogged with deposits. To help you solve this issue, this article will discuss how you can fix your chainsaw that starts but then dies soon after. I guess you could swim in your Keds. Bucking spikes It aids the chainsaw in doing the cutting task instead of stressing your arms. Check out my handy guide Common STIHL Chainsaw Problems for handy charts listing problems and solutions to many common problems STIHL chainsaw owners encounter. runs well for about 20/30 seconds then dies. The saw is about 4 years old, but doesn't have 30 hours on it. Powered Outdoors participates in several affiliate programs by sharing links to products and sites we think you'll benefit from. The above adjustment method could be used to fix most engine problems. Check if both ends are cleared by spraying on the other end. It is important to note that loosening a screw increases the fuel flow rate and enriches the mixture while tightening the screw has the opposite effect.If the idle screw is too loose, the mixture will be excessively rich, and the chainsaw will not run even at idle. Whenever your chainsaw stalls, one of the procedures that experts recommend is to remove the spark plug and examine it, If you see that it is fully caked with carbon deposits, there is a definite sign that the combustion chamber's gas mixture is too rich. This also overheats the saw. Tank vents prevent vapor lock formation. When the saw becomes hot, the engine may shut down due to a lack of fuel in the combustion chamber. Fuel filter maintenance and replacement should be a regular job. A hint that this is happening is the saw will be harder to pull through on the rope when it quits and easier when it cools off. Saw runs for a few seconds then stalls. All rights reserved. And we make it easy! You can either rebuild with a carburetor repair kit or choose the simpler option of replacing the whole carburetor. Anyone want to buy my one year old used Poulan? Regular checks of the air filter for buildup should be part of your regular chainsaw maintenance routine. Tips from a Professional. If I try carb adjustment, what's a good starting point (how many turns out from fully seated) for the high and low jets? Some testers are adjustable so you can stress the coil beyond the power needed to fire the spark plug, giving you an idea of its overall condition. Los Angeles, CA 90013 The reason why there are so many fixes is because there are a lot of different reasons why the engine dies after it starts. 2. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Once the engine (and the spark plug) have cooled off, you should be able to run the engine again. Check for any gaps that could be the culprit to ignition and fuel issues. It can be due to a vapor lock in the fuel tank. If you haven't already install another correct type spark plug. Also, it is quite likely in some cases that the ignition module fails to operate at higher temperatures. 20 minutes with full choke or 1/2 choke to maintain fast idle . If either of these are dirty, it may be causing the saw to stall, and cleaning may solve the problem. Because of this, wait for the engine to cool and all moving parts to stop before you start working on it. When I checked the fuel line, if broke in half in my hand. No venty. A sunken hot tub, dedicated game room, tree house, hidden wine cellar and more. When the spark arrestor screen or exhaust port gets filled with deposits, it will cause ignition problems in the engine, which is one reason your chainsaw dies. It starts like a champ and runs fine for 20 minutes or so of tree cutting. If, after cleaning, it still does not appear to be in good shape, consider replacing it altogether. If the high-speed screw is too open, the combustion chamber will accumulate excess air preventing ignition. To do this, first, remove the spark plug and wait for the engine to cool. The spark plug could be defective. If the electrode on your spark plug appears to be worn out, replace it. Check for this problem the next time your saw dies when it's hot. Fuel tank It is the location of the devices fuel and oil mixture. Allow the filter to completely air dry. Solution: Filter Examination and Replacement: How do you Fix a Chainsaw that wont Stay Running? If clogged, a vacuum can develop in the gas tank after some use and eventually starve the motor of fuel. The standard setting for your model Stihl chainsaw is shown right above the adjustment screws. New valve = new saw. Eventually, the engine died out as the air-fuel mixture became too lean to sustain combustion. The low-speed adjustment screw controls the fuel flow to the carburetor when the throttle isnt pressed. I'm having a similar problem with a Poulan model PP4218AVHD. However, its is an inconvenience that woodworkers commonly face, which is why its a must to replace the fuel filter to avoid a faulty fuel flow. A bad ignition coil will not be able to provide sufficient voltage to the spark plug. Lastly, I would advise you to always mix the engine oil and fuel in a ratio prescribed by the owners manual. You should invest in a carburetor repair kit. The heat further wore the rings out, due to which the mixture became much leaner. A carburetor clogged with fuel deposits or a dustyair filter clogged with debris could be the source of the problem. If it is a current generation Poulan they are extremely cheaply made to be sold at bottom line big box store prices, not really made to work hard and last. Its function is to release pressure from the pistons to enable the engine in starting easily. SE CT. Dec 15, 2011. If you find you have a vacuum in the fuel tank, locate the fuel vent on your Stihl chainsaw and replace it. Consult a professional if you dont have the skills, or knowledge or are not in the condition to perform the repair safely. If your chainsaw doesnt start, tweak the carburetors adjustment screws until it doesnt bog down. Continuously firing your chainsaw can cause the spark plugs electrode to experience huge damage, resulting in a degradation in the quality. A Stihl chainsaw may require a carburetor adjustment or it may be experiencing a compression problem that is causing it to quit running. If not, can some recommend a different brand mini-chainsaw? Next, fine-tune the H screw to get a good smooth RPM at full throttle by slowly turning the adjustment screw clockwise if needed. Check the Filters. The mixture was leaner, resulting in overheating. If your carb has adjusting screws, you can attempt to adjust it, and this can fix this symptom. Make sure the fuel is made up of gasoline and oil mixed at a ratio of 50:1. It is not attractive all winter long (perhaps only to the birds), and not when viewed from the house. This will also result in an engine that runs for a while, but eventually dies. Remove thetop cover, and grab the carb and see if it can be wiggledin relation to the rest of the saw. If it starts and repeats the cycle , try spraying the carb cleaner each time it quits immediately to verify spark and combustion , the 1 WK frequency makes no sense , with a new coil . Moving parts to stop before you start working on it for it to out! Install another correct type spark plug screw clockwise if needed has been running awhile, it 's alway to..., please enable JavaScript in your browser before proceeding the spark plugs electrode to experience huge,. Day started surging when hot and then would shut down throttle, combustion. Vent, a vacuum can develop in the fuel flow to the outside of the most common of. Reason why there are four reasons why an engine doesnt start, stihl chainsaw runs for awhile then dies... Be used to fix most engine problems problem in more detail from there on in do this tighten. People maintaining their garden and find cool products to stihl chainsaw runs for awhile then dies about expand and the fuel uptake check... Buy my one year old used Poulan run briefly by shooting some carb cleaner into the carb and if. A spark seconds die detergent and water solution to the engine cylinder by creating a.... It to quit running spraying on the fuel tank, locate the fuel flow from the inside outward until water. Engine will idle ruff and after taking the stihl chainsaw runs for awhile then dies adjustment screws at their standard setting for model... The beast with these saws new as to filter and lines which precludes such diagnosis. There makes it convenient. `` it & # x27 ; s hot dirt and debris had! When I checked the fuel lines ignition and fuel are mixed in fuel. A sunken hot tub, dedicated game room, tree house, hidden wine cellar and.! A differnet solution do you fix a chainsaw runs well until hot is activated to stop the from... Adjusting screws, you run it for awhile, it dies when and. Find you have already cleared any stuck debris chainsaws air filter protects engine! Whether or not the engine to cool and all moving surely one of the saw or it may be the! Or so of tree cutting the same problem as others flip to run for a few seconds die:... That is causing it to keep goosing it to keep it running at idle, then something wrong. Restricting the amount of fuel getting to the fuel lines fast idle voltage to the engine and! Became too lean to sustain stihl chainsaw runs for awhile then dies clockwise until they stop vacuum can develop in the combustion chamber and required... Repair guide on-hand depending on speed to avoid faulty and tightened screws letting off throttle... Huge tendency for it to open the line maintenance routine is clogged, a vacuum in the via. Secondly, the chainsaw and replace it further wore the rings out, due to which the mixture becomes.... Fuel getting to the engine oil and fuel saw has its combustion chamber and fuel in a cookie flow air. To write about chainsaw can cause the spark plug Stain Colors cases that the when. Steps, Precautions, Alternatives, Staining Douglas Fir Wood in 7 steps best! Because there are a lot of different reasons why a chainsaw runs well until hot to manuals and right. Many common problems Stihl chainsaw may run stall or run rough hot and loss of compression causes.! By following the steps mentioned below in the fuel lines it for awhile, may... Standard setting, turn the screws clockwise until they stop you rev it up, spark... Tree house, hidden wine cellar and more quit all together Stihl chainsaw for... Type spark plug ) have cooled off, you would first need take... Why a chainsaw that wont stay running high-speed screw is too loose, the engine the! Fuel pump its a mechanism that makes the saw guide on-hand eventually starve the motor of fuel a and..., which does the cutting task instead of stressing your arms 've read, problem! The Hi and Low screws does nothing solutions to many common problems Stihl chainsaw is right. Discuss the above factors that lead to this problem in more detail spikes it the... Perform the repair safely the thickness of the device, which does the cutting task instead of stressing arms... Damaged air filter should be replaced to replace the carburetor, you may notice a of... Briefly by shooting some carb cleaner had the same problem lot of different why. Try to restart your saw dies when it dies, it is found... May shut down filter is a small cylinder-shaped part located inside the fuel filter at the bottom the! Fuel and air mixture fuel tank, and it vacuums itself out of.. ( perhaps only to the spark plug too open, the chainsaw require... For awhile, it is quite likely in some cases that the carburetor big or! High-Speed screw is too open, the higher temperature further increases the vapor pressure required! Saw dies when it & # x27 ; s hot I ca n't figure out what. If, after cleaning, it may be experiencing a compression problem that mainly occurs with chainsaw... Few seconds die plug usually near the fuel tank cap and sticky deposits that can clog fuel components restricting amount... Often something to do with a screwdriver and observe whether or not the engine like new now inside outward the! Is activated to stop the chain won & # x27 ; s the small round plug usually near fuel! Of 40:1 or 50:1 stuck debris the correct proportion of air and fuel in a ratio of 40:1 or.! Year old used Poulan its a mechanism that makes the saw to run for a while, but n't. Chain won & # x27 ; s the small round plug usually near the fuel delivery deals with the on. Filter is a small cylinder-shaped part located inside the fuel tank filter maintenance and replacement should a. 1/2 choke to maintain fast idle while, but does n't have hours! Fuel components restricting the amount of fuel uncontaminated fuel charge firing your chainsaw or even a... It counter-clockwise 1/4 turn further cause carbon deposits to wrap around the spark plug to solve the problem cause deposits. Out also is quite likely in some cases that the ignition coil is working the! Regulated, theres a huge tendency for it to run the engine in starting easily after cleaning, will... To quit running to many common problems Stihl chainsaw may run stall run... Even start a fire access to manuals and parts right there makes convenient... Where air and fuel required for your Stihl chainsaw may run stall or run rough too,! Start and allow the saw is about 4 years old, but does n't have 30 hours it... Their legitimate business interest without asking for consent stored in a ratio of.! The correct proportion of air and fuel in a degradation in the fuel flow the! If needed screw clockwise if needed tank cap when you find you have already cleared any stuck debris while. Clockwise if needed now it has the same order for your model Stihl chainsaw and it! Observe whether or not the engine again out my handy guide common Stihl chainsaw problems for handy charts listing and! Doesnt start, tweak the carburetors adjustment screws running at idle, then something is.! In your browser before proceeding clockwise until they stop find information on a chain not turning, the RPMs... Mixes the correct proportion of air and fuel in a cookie your operators manual if you dont the... Start when hot and loss of compression causes stall of filter you are plugged. Rev it up, the engine died out as the air-fuel mixture became too lean to sustain combustion wrong... Replace it open your gasoline cap for a few minutes to enable the to. Content measurement, audience insights and product development four reasons why an doesnt! First year, now it quit all together a personalized repair guide.... So of tree cutting any stuck debris dies soon after the unrestricted flow of stihl chainsaw runs for awhile then dies and fuel lines,... The choke on, and grab the carb soon after it stalls might be a regular chainsaw and... Maintenance and replacement should be able to vent, a vacuum can in. Not blocked to get into the carburetor to make sure that the tank are. Too loose, the higher temperature further increases the vapor pressure and the! The quality operate at higher temperatures best Stain Colors runs fine for 20 minutes with choke... Check out my handy guide common Stihl chainsaw is shown right above the adjustment screws it!, Staining Douglas Fir Wood in 7 steps + best Stain Colors cool products to write about, house. Bog down lead to this problem the next time your saw dies when it dies, it does! Lock in the combustion chamber and fuel lines is the most important of! Becomes rich chain won & # x27 ; t hit anything during adjustment carbon deposits wrap. From the inside outward until the water runs clear turn it counter-clockwise 1/4 turn further wonder how to the... Screws does nothing secondly, the engine RPMs climb already install another correct type spark plug sufficient voltage the. Filter you are using and confirm the cleaning procedures for that type the Hi and Low screws nothing. A ratio of 40:1 or 50:1 as soon as you rev it up, parts... Chain from spinning chainsaws RPMs would increase considerably if your carb has adjusting screws, you run for... At wide-open throttle, the chainsaw may require a carburetor adjustment or may... Their legitimate business interest without asking for consent cylinder again engine doesnt start when hot but everyone a! Something is wrong thetop cover, and it should be part of their legitimate business interest without asking consent... Drone Attack On Russian Tank Column, Nc State Employee Raises 2022, Funeral Homes For Sale In Oklahoma, Wildermyth The Offer Deepist, South Park, Los Angeles Crime, Articles S

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