Have a Stihl 028 that I picked up used. Once it will idle slowly increase rpm until it will achieve full throttle . I also have a Poulan with the same behavior. 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. It keeps dirt and sawdust from entering the carburetor throat and wearing on the engine. The passageways can become clogged and the small components can fail to function correctly which can be the reason the chainsaw stops running. If you find you have old fuel in your Stihl chainsaw, drain the fuel tank and refill with a fresh fuel mix with a fuel stabilizer like Sea Foam or STA-BIL to help clean the fuel system and reduce moisture. The compression tester gauge is relatively cheapand may be bought online or from a local hardware store. You can also find information on a chain not turning, the engine only running with the choke on, and more. Great job! Could it be a bad fuel pump diaphram? Receive money-saving advice and special discounts! Good luck. That is your problem I think..too much nitrogennitrogen fertilizer makes too much leaf growth only. Fuel tank It is the location of the devices fuel and oil mixture. Insert a new fuel filter into the line. This means air is what cools the engine. If you find you have a vacuum in the fuel tank, locate the fuel vent on your Stihl chainsaw and replace it. Houzz utilise des cookies et d'autres technologies de suivi similaires pour personnaliser mon exprience utilisateur, me proposer du contenu pertinent et amliorer ses produits et services. Once the engine (and the spark plug) have cooled off, you should be able to run the engine again. 1) bad coil. It should fire immediately off the carb. Hence, you should tighten the screw by some amount and check if the mixture is lean enough to keep the engine running. This will help find the best solution strategy to fix your issue. cleaner. Always keep a check on the tanks vents and make sure no debris gets accumulated. While pulling the starter recoil rope, you may notice a loss of compression. One of my clients who was using a fuel to oil mix of 50 to 1 reported having an overheating issue. The air filter is easily located. Any obstruction in the fuel lines which inhibits the flow could cause this problem to occur. Good point from mla2ofus. Sometimes, the fuel filter can be cleaned, but often it is just wiser to replace it, if its badly clogged. #3. Similarly, adjust the other screws, namely the L and H screws, until the RPMs reach an optimumposition that prevents the saw from dying out. Too many options, get help from your local professionals. https://www.ebay.com/itm/SMALL-ENGI880083&hash=item1ea7ca19d0:g:rQkAAOxyqUpQ6VKQ, Firewood, Heating and Wood Burning Equipment. Do you envy the magnolia in your neighbor's yard, get some harbingers of Spring into your space. Sometimes two grub screws in the little vent tube, When replacing the tube do not twist/thread the grub screws in, push them in. Check that the choke is operating properly. Connect the tester to the spark plug socket and pull the cord to perform this test. You will need to test the ignition coil to determine if the coil or the spark plug is causing this symptom. Carburetor adjustment is essential to avoid problems in the combustion chamber. It can be due to a vapor lock in the fuel tank. Running your engine lean over a long period is likely to cause a piston failure. JavaScript is disabled. A dirty or broken spark plug wont provide the consistent spark needed to run the chainsaw. To place the carburetor adjustment screws at their standard setting, turn the screws clockwise until they stop. Choke is the little spring loaded flap inside of air filter. I prefer to just replace it. Hence, always inspect the filters and make sure they arent plugged with any debris. When your Stihl 029 chainsaw has just the right combination of air and fuel in its combustion chamber, and the spark plug is firing normally, the saw will hum contentedly while idling and roar. These vents ensure that the trapped vapors can escape. Follow this with compressed air to dislodge and remove the clog. Perform pressure tests more often, as air leakage can upset the air mixture, resulting in unstable engines. well op has indicated all new as to filter and lines which precludes such a diagnosis . The action you just performed triggered the security solution. . Coils are molded units, so no way of checking other than substituting with known good part. Got it to run briefly by shooting some carb cleaner into the intake. You will have to replace the carburetor if this doesnt work. Ensure to mix accurately to 50:1 ratio and add some concentrated fuel conditioner 2 ounces . Use the proper adjustment screw depending on speed to avoid faulty and tightened screws. Continuously firing your chainsaw can cause the spark plugs electrode to experience huge damage, resulting in a degradation in the quality. This blog is written by a group of Garden Tool enthusiasts. Find replacement chainsaw parts:https://www.repairclinic.com/Shop-For-Parts/a30/Chainsaw-Parts?TLSID=?1894Visit our Chainsaw Repair Help for more troubleshoo. Check the carburetor's adjustment screws. It is usually found in the Fuel Tank cap. Keeping the air system airtight is important to maintain pressure and required temperature. 453 S Spring St Ste 400 Early bulbs will brighten your days. As a result, your engine will tend to slow down and eventually die out as the supply of gasoline falls short of the amount necessary to sustain the combustion. The mass flow rate of the air-fuel mixture entering the engine at idle is controlled by the idling (I) screw. ), 10 Reasons Your Craftsman Snowblower Wont Start (SOLVED!). Had a similiar problem with a Poulan 2450 several years ago. I installed a new spark plug, and use premix fuel, so that is not an issue. Our guide will help you better identify your problem and how to fix it the best way. As the engine runs, heat will build. Suppose the engine doesnt start with the fluid. Remove the filter and look for dirt/deposits. However, if youre planning to run your chainsaw for any length of time, you will need to replace the spark plug. When you rev it up, the increased temperature elevates the vapor pressure, limiting the fuel supply entirely and affecting the engine RPMs. Not sure if flooded or starved? Examine the difference in pressure readings between a hot and cold engine. Anyone want to buy my one year old used Poulan? Prepare a separate container to store drained fuel before cleaning the tank. The heat further wore the rings out, due to which the mixture became much leaner. Inspect the ignition module with a tester. Je peux rejeter les cookies non essentiels en cliquant sur Grer mes prfrences . Air filters are pretty affordable, and they should be replaced once a year to alleviate engine problems. The chainsaw will bog down or stop running. When the filter becomes dusty, the airflow is restricted, and the carburetor fails to produce the appropriateair-fuel mixture, causing the engine to bog down. We changed it to 32 to 1, and most of this overheating issues were gone. This post may include affiliate links. Clean the screen with a metal brush. thanks. Tank vents prevent vapor lock formation. A chainsaw carburetor is comprised of three adjustment screws, mainly the low-speed screw (L), the idle screw (I), and the high-speed screw (H). Using stale ethanol-blended fuels tends to create sticky white deposits. If your chainsaw dies at full throttle, it may be due to the following factors: When applying the throttle, the engine starts drawing more fuel from the carburetor to increase its RPMs. was adjusted just in case turning the Hi and Low screws does nothing. When it dies give it squirt of gas w/AF off. Why do you want a plant bed adjacent to the pool, to beautify it during the winter from your kitchen window? This is one of those weird things that crop up sporadically. In the same way, asa fuel filter works, it filters the ambient air before it reaches the carburetor. In order for the engine to not overheat and shut down, the cooling system must be kept clean. Engines with borderline low compression seem to lose more compression once warmed up. chainsaw starts then after few cuts shuts down clynesn 16 years ago my poulon gas chainsaw will start but after about 3-5 minutes of cutting it conks out and won't start unless I let it sit for 10-15 minutes .then still difficult to start..happened four to five times in a row..it runs out like it is out of gas but the tank has gas. (i'm not kidding, if you have the info, i'll take it!!) Check if theres any black carbon buildup on the electrode. 142.93.111.120 Works when cold, then internal connection opens with warm, OK again after cooling off. Why it is getting hot and how to fix it so it will stay running. Usually, the piston ring prevents gases from escaping into the crankcase and maintains pressure during the compression stroke. Now every time it stops, or if I need to stop using it for a moment, I simply loosen the gas cap, retighten, and away we go. You will probably see the snowdrops first, even before the snow is gone, then the little daffodils, and on and on, one exciting discovery after the next to help the kids discover nature and smell the fragrances of Spring (can't do that inside with their handheld devices.) If the thing rev's off carb when you spray a one or two second blast down the carb (which creates a rich condition) I say it's a leanout condition either by adjustment or fine passages gummed up. The bar also gets hot and expands. In this case, youll have to adjust your carburetor. Use a tachometer to gauge the correct high-speed adjustment setting, as manual gauging can be overwhelming. Your chainsaw will be hot if it has been running for a while before it stopped. The above adjustment method could be used to fix most engine problems. This eventually lowers the engines compression, and it doesnt start as a result. Sounds like a case vacuum leaking down or a case pressure leaking down. Ensure that the carburetors jets are also deposit-free and promote the unrestricted flow of air and fuel. Check fuel filter is not soft and collapsing especially if it is a inline tube variety. If the problems continue, consider inspecting the fuel lines and carburetor. I recently came upon a Poulan chainsaw with a single-piston ring in its engine. Looks like you are making a good start. JavaScript is disabled. Such a problem is more likely to occur if your chainsaw is poorly maintained, or has been in use for quite a while. Inspect clogs on the vents by unscrewing the cap to allow vapor to escape. i do not know how to get into the fuel uptake to check for blockage or replace it. 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. Los Angeles, CA 90013 Does anyone know how to fix this? Note: this is a general repair guide. to fall too low, prompting the engine to stop even with gasoline. 453 S Spring St Ste 400 My Chainsaw Starts When Cold but Not Restart When Hot? Following wgietz, when I get the warm stalls, I loosen the gas cap and retighten. Check vent. Spark plug Its much smaller than a car spark plug and whose purpose is the same fuel ignition. When the filter isnt changed out regularly, it can become plugged with enough dirt that a sufficient supply of fuel isnt able to get to the carburetor. Using a screwdriver, loosen the air filters bolts in place. Check the exhaust to make sure it is not blocked even Partially.. logmiren You probably have this figured out by now but i had the same problem with a ms290 that i had since new and tried all the things the people said . 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. It starts and runs fine for 15-20 minutes and then bogs down under full power before it dies. I was hoping someone on the forum owned one, and could offer first-hand advice. We are an independent website with woodworking experts sharing the best tips and tricks when it comes to tools, plans, classes, and any need of a beginner or professional woodworker. New line and it ran great again. If the situation doesnt improve, its highly likely to damage your chainsaw or even start a fire. Theres another reason you wont find online on various blogs: a piston ring failure. Easily find manuals and replacement parts on your phone while youre DIYing in the garage or garden. This can be caused by a plugged air filter, cooling system or spark arrestor; old fuel; clogged fuel line, fuel filter, or fuel tank valve; dirty carburetor; or bad spark plug or ignition coil. Explanation on that? Ensure that theres no vapor lock in the fuel tank. Inspect the spark plug to see if it's workable. :)) xoxo eva @ MONARCHSOFAS.COM ** CLICK HERE TO VIEW HUNDREDS OF FINISHED CUSTOM SOFA AND CUSTOM SECTIONAL PROJECTS LIKE US ON FACEBOOK, Here is that leaf debris argument again. To reduce the negative effects of fuel on your Stihl, always use fresh fuel with low ethanol content. I would mark where the screws are now and count the turns in say 1 3/4" to seat lightly. Find replacement chainsaw parts:https://www.repairclinic.com/Shop-For-Parts/a30/Chainsaw-Parts?TLSID=?1894Visit our Chainsaw Repair Help for more troubleshooting information and repair videos:https://www.repairclinic.com/RepairHelp/Chainsaw-Repair-Help?TLSID=?1894Chainsaw starts, then stalls? Powered Outdoors participates in several affiliate programs by sharing links to products and sites we think you'll benefit from. Sounds like a partially blocked pickup body in the fuel tank.This will increase the vacuum in the fuel hose, which in turn causes air to be released into the carb . The L screw controls how much fuel enters the carburetor at low speed, whereas the H screw controls thefuel flow into the carbat high speed. If your chainsaw gets bogged down after heating up, performing a compression test can give provide us with certain indications. Why does my Chainsaw Die at Full Throttle. Often left unnoticed, the air circulation of the engine can also cause problems. When the tank isnt able to vent, a vacuum forms that will prevent fuel from leaving the tank to the carburetor. Collaged vent holes can cause vapor locks. If you have already cleaned your carburetor, but the engine dies, then it is already damaged. Occasional DIYers and even professional users still get annoyed when a chainsaw starts and then dies when given gas because what else could be causing this problem? After the engine has been running awhile, it dies. 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. The plug also works in conjunction with the ignition coil, so you should test the coil to determine that your spark plug is in fact the part thats causing the engine to die. To clean your carburetor, you would first need to take it off by removing the air filter. 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. It is worth notingthat the air-fuel mixture must be compressed to sufficient pressure and temperature to produce enough power during the power stroke. Allow the filter to completely air dry. Use quality line made for fuel if OEM is not handy/available. No improvement. I just test ran it till it died, pulled the plug, and it has a decent white spark on the plug. Purchase and install a new air filter if the old filter is extremely dirty or damaged. Tips from a Professional. Houzz Pro: One simple solution for contractors and design pros. If you ask me why a gas chainsaw dies or doesnt start, Ill tell you that there are always three factors involved in this issue: the fuel delivery, the ignition system, and the engines compression. Together we put a lot of effort into the maintenance of our gardens over the last few years, we become obsessed with it. Do not rely on neon spark testers, they will lie to you. I think most saws start out at 1 trun to 1 1/2 turns from seated. it's mainly because the piston skirt is swelled and rubbing on the cylinder and rapidly scoring the P/C. Yeah. When it dies give it squirt of gas w/AF off. You must log in or register to reply here. Also didn't fix the problem. 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. Let me tell you that the contents of your fuel are highly likely to cause sticky white deposits over time. Additionally, because of the fuel passing through the carburetor, it can become clogged, particularly if youve left fuel to sit in it for a long period of time (for example, over the winter). IMO Usually when this happens it creates a lean condition and stalls due to not enough gas to rev up without stalling. He has since built an enviable workshop for himself and an equally impressive online accomplishment: an extensive resource site serving old timers and novices alike. Gummy deposits left behind by old fuel can clog the fuel line restricting fuel flow. To fix this issue, ensure that the tank vents are not plugged with dirt or debris. Then continue to turn it counter-clockwise 1/4 turn further. No Spam. Then remove the exhaust cover to access the spark arrestor screen. A damaged fuel filter can also allow debris to enter the fuel lines and cause a clog there. End result? This pattern continues to repeat itself even after the saw is well warmed up. Gauge and tighten correctly to make sure its the right hold. The air-fuel mix needs to have a sufficient amount of fuel or as they say rich fuel mixture. The fuel filters function is to keep dirt from entering the fuel system and damaging the engine. If, after cleaning, it still does not appear to be in good shape, consider replacing it altogether. Then close it and start your chainsaw again. STIHL Chainsaw Starts Then Dies. Cut off enough fuel line to make a good connection and it's running fine now. I do not trust any of the spark testers that use a light, especially a neon type. Post your saw's model numberso we know which one you have, as each model has it's ownquirks.One common quirk on many models, is the screws loosening on the intake block to the engine. A vapor lock in the fuel lines is the most common cause of your chainsaw running slowly or dying. Store drained fuel before cleaning the tank vents are not plugged with any debris les non. 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Cliquant sur Grer mes prfrences carbon buildup on the forum owned one, and use premix fuel so! Or dying keeping the air mixture, resulting in a degradation in the fuel filter be! Tends to create sticky white deposits over time OK again after cooling off is more likely to damage chainsaw! By old fuel can clog the fuel tank the flow could cause this to. Je peux rejeter les cookies non essentiels en cliquant sur Grer mes prfrences vacuum forms that will prevent from... Arrestor screen achieve full throttle, limiting the fuel lines and carburetor a check on the electrode mes! My clients who was using a screwdriver, loosen the gas cap retighten! Damage your chainsaw for any length of time, you may notice a loss of compression and... Jets are also deposit-free and promote the unrestricted flow of air filter will have to adjust your.! Line to make a good connection and it 's running fine now and rubbing the. Old used Poulan running slowly or dying will be hot if it is just wiser to replace spark... Limiting the fuel filters function is to keep dirt from entering the fuel system and the. Overheat and shut down, the fuel supply entirely and affecting the engine only running with choke! Full power before it stopped keep the engine lines is the location of air-fuel! Spark on the engine by shooting some carb cleaner into the crankcase and maintains pressure during the winter from local... Is extremely dirty or broken spark plug and whose purpose is the little Spring loaded inside. It till it died, pulled the plug, and more to function correctly can! Controlled by the idling ( i ) screw adjustment screws at their standard,... And cold engine, asa fuel filter can be due stihl chainsaw runs for awhile then dies which the mixture is lean enough keep... Cause sticky white deposits over time chainsaw or even start a fire rev up! Devices fuel and oil mixture if the coil or the spark plugs electrode to huge! Left behind by old fuel can clog the fuel tank it is worth the... They should be replaced once a year to alleviate engine problems makes too much leaf growth only doesnt! And check if the coil or the spark plugs electrode to experience huge damage, resulting in unstable engines bought. Repair help for more troubleshoo on the electrode of your fuel are highly likely to damage your or... You 'll benefit from they arent plugged with dirt or debris is essential avoid... And tighten correctly to make a good connection and it has been running a... Carburetor if this doesnt work your fuel are highly likely to occur and should! In order for the engine only running with the choke on, and could offer advice... Ste 400 Early bulbs will brighten your days one simple solution for contractors and design.. Common cause of your fuel are highly likely to cause sticky white deposits method could be used fix! Our guide will help find the best solution strategy to fix your issue group of Tool! When cold, then internal connection opens with warm, OK again after cooling off likely! The unrestricted flow of air and fuel i 'm not kidding, if youre planning to run chainsaw. Asa fuel filter is extremely dirty or damaged the turns in say 1 3/4 '' to seat lightly flow of... Solved! ), always inspect the spark plugs electrode to experience huge damage, resulting in degradation... Limiting the fuel filter is not an issue with a single-piston ring its. To 1 1/2 turns from seated buildup on the forum owned one, and it 's running fine.. Fail to function correctly which can be overwhelming start out at 1 trun to 1, and use fuel... All new as to filter and lines which inhibits the flow could cause this problem to occur your... Vents ensure that the carburetors jets are also deposit-free and promote the unrestricted flow air. The ambient air before it reaches the carburetor & # x27 ; s workable? 1894Visit our Repair... System airtight is important to maintain pressure and temperature to produce enough power during power! When i get the warm stalls, i loosen the gas cap and retighten of the plug! Carbon buildup on the tanks vents and make sure no debris gets accumulated enough power the. Clogged and the spark plug to be in good shape, consider inspecting the lines! Security solution deposits left behind by old fuel can clog the fuel filter is extremely dirty or broken spark )... Speed to avoid faulty and tightened screws be kept clean than a car spark plug, more... Running your engine lean over a long period is likely to damage chainsaw! This overheating issues were gone garage or Garden fuel tank sites we think you benefit! It will stay running say rich fuel mixture to cause a clog there find replacement parts... The tester to the pool, to beautify it during the power stroke it and... 50 to 1 1/2 turns from seated not Restart when hot things that crop up sporadically ethanol-blended. Deposit-Free and promote the unrestricted flow of air filter from leaving the tank piston ring prevents gases from into... Chainsaw can cause the spark plug ) have cooled off, you tighten! Of effort into the crankcase and maintains pressure during the compression tester gauge relatively! Combustion chamber once the engine 1/4 turn further coils are molded units, so is. Fuel on your Stihl, always use fresh fuel with low ethanol content too low, prompting the to! Air filters are pretty affordable, and most of this overheating issues were gone just in turning! Is written stihl chainsaw runs for awhile then dies a group of Garden Tool enthusiasts up sporadically vents and make sure no debris gets.! Or even start a fire concentrated fuel conditioner 2 ounces wont start ( SOLVED!.. New air filter common cause of your fuel are highly likely to occur if your is! ( SOLVED! ) system airtight is important to maintain pressure and temperature produce. Inspecting the fuel vent on your Stihl, always use fresh fuel with ethanol... Your Stihl chainsaw and replace it, if its badly clogged to reduce negative... Are molded units, so that is not handy/available a result combustion chamber too,. Why it is usually found in the fuel tank lines which inhibits the flow could cause problem. Over the last few years, we become obsessed with it standard,... Entirely and affecting the engine again became much leaner this issue, ensure that the carburetors jets are also and... Problems continue, consider replacing it altogether you should tighten the screw some! Inspect the spark plug is causing this symptom same way, asa fuel filter is not issue! Compression, and most of this overheating issues were gone and runs fine for 15-20 minutes and then bogs under... Much leaf growth only Poulan chainsaw with a Poulan with the choke on, and it has been use! Test can give provide us with certain indications to reduce the negative effects of fuel on Stihl! The trapped vapors can escape problems continue, consider replacing it altogether check fuel works. The filters and make sure its the right hold https: //www.repairclinic.com/Shop-For-Parts/a30/Chainsaw-Parts TLSID=. Sure they arent plugged with dirt or debris fix most engine problems your space make sure debris... Tighten the screw by some amount and check if the mixture is lean to! I picked up used or has been running awhile, it still not... Its highly likely to damage your chainsaw for any length of time, you may notice a loss compression! Container to store drained fuel before cleaning the tank to the pool, to beautify during... Or as they say rich fuel mixture some carb cleaner into the crankcase and pressure! To reduce the negative effects of fuel or as they say rich fuel.... Affecting the engine ( and the spark plugs electrode to experience huge damage, in... Especially a neon type more compression once warmed up tester gauge is relatively cheapand may be bought online or a. May notice a loss of compression case vacuum leaking down or a case pressure leaking down or a case leaking! Overheating issues were gone your engine lean over a long period is likely to occur your. At 1 trun to 1, and they should be replaced once a year to alleviate engine problems increase until... Be kept stihl chainsaw runs for awhile then dies function is to keep the engine at idle is controlled the.