Because of this, wait for the engine to cool and all moving parts to stop before you start working on it. !. Copyright 2023 eReplacementParts.com Inc. 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. The fuel delivery deals with the fuel flow from the tank to the engine via the carburetor and the fuel lines. However, a damaged air filter should be replaced. This creates a lean mixture, so as a result, the saw may start perfectly. 79Fiesta. This will help find the best solution strategy to fix your issue. Old fuel is a big reason why a Stihl carburetor will stop working. If the filter looksclogged, buy a new one toreplace the previous filter. Disclaimer | Terms & Conditions | Privacy Policy | About Us | Contact Us, This is the Type of Gas and Oil Stihl Chainsaws Use. I then have to wait till it cools down to restart. You might have intermittent ignition coil. Decompression valve It can only be found on some saw models. I came across a condition when damaged O-rings at the connection caused air to leak into the carburetor. Let me tell you that the contents of your fuel are highly likely to cause sticky white deposits over time. Another thing that will give you fits is the spark arrester on the muffler getting clogged with carbon/soot, it's a super fine screen that covers the opening in the muffler. 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? 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. While pulling the starter recoil rope, you may notice a loss of compression. 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.) Perhaps dock (who as I recall is an engineer) or a physicist could be more precise but I think the general idea is correct.And speaking of dock: The thread he refers to is the most facinating one I have read on this site. 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. The problem lies in your ignition and must be fixed. If there isnt much dirt buildup, a soap and water solution will beadequate. Had it for years and ran great. The compression tester gauge is relatively cheapand may be bought online or from a local hardware store. Choke is the little spring loaded flap inside of air filter. But compression measures the piston area which is sealed by piston rings but where the fuel pump impulse connection is made below the piston rings has the case seal and bearings to leak air, and the impulse tube being polymer is subject to age degredation and collapse, even a sticky collapse like a failed fuel filter which could seal the case volume and release over a week due to sheer volume. Throttle Interlock It keeps misuse and accidents for occurring. Could it be a bad fuel pump diaphram? 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. The reason why there are so many fixes is because there are a lot of different reasons why the engine dies after it starts. Use a metal wire to brush stale gasoline deposits. To thoroughly clean the carburetor, spray carb cleaner liquid in the insides and out to avoid . Youre in the middle of a big project when your chainsaw beings to run sluggishly, stalls, and stops running. Letting your chainsaw idle or run at low speeds for a long time will contribute to a buildup of carbon. Make sure the fuel is made up of gasoline and oil mixed at a ratio of 50:1. This setting varies by model. Like the spark plug, an ignition coil that is going bad can stop functioning properly when it warms up. Check the carburetor's adjustment screws. I haven't used it throughout the winter and today I put some new fuel and chainsaw oil in it. How do you Fix a Chainsaw that wont Stay Running. Inspect the ignition module with a tester. Similarly, open your gasoline cap for a few minutes to enable the pressure to return to normal. I have seen plenty of cases where experienced users run their chainsaws at WOT when it gets stuck while cutting wood and eventually destroys their chainsaws. When the compression is low on a Stihl chainsaw, it will fail to have enough pressure which can cause it to quit running. Replace your spark plug if the electrode appears worn out. If the high-speed screw is too open, the combustion chamber will accumulate excess air preventing ignition. Idle screws are butterfly valves, which are extremely harmful, so its best to take extra precautions when making this step. "Love the flexibility of the app to add everything in the home and garage. It keeps dirt and sawdust from entering the carburetor throat and wearing on the engine. In the case that your chainsaw runs for a while, then dies, it may be possible to simply clean the air filter to correct this symptom. New part-time arborist. Using stale ethanol-blended fuels tends to create sticky white deposits. The chainsaw may need the choke engaged to . A Stihl chainsaw will start and then die when it no longer gets the air, fuel and spark it requires to keep running. The consent submitted will only be used for data processing originating from this website. Air filters are pretty affordable, and they should be replaced once a year to alleviate engine problems. Check vent. Connect the tester to the spark plug socket and pull the cord in each of the two cases. it has the above described problem. For a better experience, please enable JavaScript in your browser before proceeding. Regular checks of the air filter for buildup should be part of your regular chainsaw maintenance routine. Rinse the filter in warm water from the inside outward until the water runs clear. See the budget-saving tricks that helped this underground space, Find the right local pro for your project, Personnaliser mon exprience l'aide de cookies, Landscape Architects & Landscape Designers, Outdoor Lighting & Audio/Visual Specialists, How to Decorate When You're Starting Out or Starting Over, Just a Few Things for the Dream-Home Wish List, Houzz Tour: A Texas Home Gets a Healthy, Fresh Start, 10 Things to Discuss With Your Contractor Before Work Starts, 14 Things You Need to Start Doing Now for Your Spouses Sake, Do It for the Kids! Most Poulan chain saws use fairly common Phelon electronic ignition coils. Start the Stihl chainsaw and allow it to run for about 10 minutes to warm up. The high temperature causes excessive vapor buildup in the fuel lines, preventing the liquid fuel from flowing into the carburetor. Crape Myrtle stops growing after spring. Avoid running your engine on a lean fuel setting as this overheats specific engine components and makes them prone to failure. Why does my Chainsaw Die when I Give it Gas? Its an important part required for your Stihl to run well and its an inexpensive maintenance part. To access it, look to the top of the carburetor. I came across a case of a Poulan chainsaw that uses a single-piston ring in its engine. The passageways can become clogged and the small components can fail to function correctly which can be the reason the chainsaw stops running. 453 S Spring St Ste 400 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. 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. 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. 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. Then turn the screw counter-clockwise 1/4 turn. I still need to find hardware, No need to feel overwhelmed. It is worth notingthat the air-fuel mixture must be compressed to sufficient pressure and temperature to produce enough power during the power stroke. to fall too low, prompting the engine to stop even with gasoline. so if anybody can help with hot idling problem I would appreicate it. Well I started reading this thread in 2006. If your chainsaw doesnt stay running, begin troubleshooting by following the steps mentioned below in the same order. Chainsaw Dies when Hot, what are the reasons? Another problem is prolong storage the little passages get gummed up. 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. It is usually found in the Fuel Tank cap. Another suggestion is to clean the spark plugs more frequently, but always be careful to avoid the enamel insulator. All rights reserved. The new gasket should create the seal required to keep your engine running. First, wipe around the fuel tank cap so dirt doesnt fall into the tank. This pattern continues to repeat itself even after the saw is well warmed up. Clean the screen with a metal brush. Pull the filter out of the tank using a filter hook or a clean bent wire. You will find a small metal screen on the muffler that keeps hot exhaust material from shooting out of the chainsaw. Please note that the air-fuel mixture needs to be compressed to a suitable temperature to produce enough power in the power stroke. 13 Reasons Your Stihl Chainsaw Wont Start (SOLVED! No flowers, Our kitchen (Before & After). 453 S Spring St Ste 400 This also creates a hard starting condition. Adjust the low-speed screw counter-clockwise slowly until you find the sweet spot where it runs smooth and not sluggish if needed. To enhance the performance of a chainsaw, the screws should be properly gripped before pressing the throttle, and its necessary to make certain adjustments now and then. Give it a try. One more issue to consider. Begin by removing the spark plug wire. Your IP: Flywheel It is a smoothening out function in the engines firing capability. I had it tuned up, with replacement of all filters and such, and no improvement. Good conversation tricky , still can,t get my head around waiting 1 wk rather than verifying fuel to the plug . The pressure valve allows air into the tank but attempts to keep fuel from getting out, I suppose it could become plugged. I have a T435 Husqvarna chainsaw. Running your engine lean over a long period is likely to cause a piston failure. Start the saw and let the chainsaw idle. The air filter screen on your chainsaw is positioned on the backside. If I try carb adjustment, what's a good starting point (how many turns out from fully seated) for the high and low jets? ), 10 Reasons Your Craftsman Snowblower Wont Start (SOLVED!). Nearly every weekend you will find us doing small or big jobs or just enjoying our garden. As the name says, it filters the fuel so that the carburetor gets a clean and uncontaminated fuel charge. This may cause the saw to die out when hot. The chain will start spinning when the fuel mixture is too engaged with the clutch. End result? Only a select few varieties of wood are suitable for use in outdoor projects, among these are cedar and pressure-treated lumber. Read your operators manual if you are not sure what kind of filter you are using and confirm the cleaning procedures for that type. We are compensated for referring traffic and business to Amazon and other companies linked to on this site. Continuously firing your chainsaw can cause the spark plugs electrode to experience huge damage, resulting in a degradation in the quality. Wait for the tank to cool, lift the lock lever on the fuel cap, and slowly turn it about 1/8th of a turn counter-clockwise to let the remaining pressure vent before proceeding to remove the cap. Check the filters quality. If there is a mismatch, your piston and cylinder have been damaged depending on its extent. The filtershould then be cleanedwith a dental pick or a thin metal rod. A faulty spark plug could cause the engine to die out. Note: this is a general repair guide. When the air filter isnt regularly cleaned or replaced, it can become plugged preventing sufficient airflow. The chain and bar might expand at different rates and sizes. worn ring increases gap end when hot and loss of compression causes stall. Steps we took to get to the final result. If your chainsaw doesnt start when hot, it can be due to one of the four reasons. I would mark where the screws are now and count the turns in say 1 3/4" to seat lightly. Depress the throttle and if it doesnt bog the saw engine, try tightening the low or high-speed. i do not know how to get into the fuel uptake to check for blockage or replace it. Check fuel filter is not soft and collapsing especially if it is a inline tube variety. The spark arrestor screen must be inspected regularly and cleaned when needed. The spark plug could be defective. Find the right local pro on Houzz to kickstart your project. You might want to add a loudspeaker to the lamppost on the far side of the pool, so you can communicate directly with the kids in the "tree house" beyond or poolside, while at your monitoring position in your office or kitchen. Never run your engine at WOT, as this can damage the engine components considering the lean fuel mixture it is operating at. 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 . Once I adjusted the carby it was fine. 5) tank not pressure tight. Repeat as necessary to remove the clog. I'm having a similar problem with a Poulan model PP4218AVHD. In the same way, asa fuel filter works, it filters the ambient air before it reaches the carburetor. Well send you a nice letter with latest posts once per week. Just something to check for.If that seems tight, then going through the carb wouldbe my next move, unless you have a model with an externalimpulse line, which should be checked, as well as if youhave a model with a primer bulb.But otherwise I would look inside the carb. Tips from a professional, Chainsaw Seized Up. Check the manual provided by your owner for more specific repair information related to your model. You will have to replace the carburetor if this doesnt work. Stihl Chainsaw starts then stalls 01 - Stihl Chainsaw Spark Arrestor The spark arrestor is a small screen that prevents the engine from emitting sparks. These parts get clogged when there are unruly debris and deposits. When it dies, it will NOT restart until it's fully cooled down. the chain is movable but not easilythe chain oil comes out automatically and I am not certain there is enough. Continue with Recommended Cookies. We were unable to add your email to our mailing list. I advise bringing your chainsaw to a small engine mechanic or your Stihl dealership for testing and making necessary repairs. This small screen is subject to carbon buildup that can reduce airflow and cause a Stihl chainsaw to die. Check your electrode to notice any signs of wear and tear. If, after cleaning, it still does not appear to be in good shape, consider replacing it altogether. The expansion makes the chain longer. The air filter is easily located. However, when it becomes clogged, the passage of fuel to the engine is obstructed, causing the engine to stall. This kind of thing is pretty often something to do with a pressure valve on the gas tank. There are adjustment screws on the carburetor to make these adjustments. It covers problems with a chainsaw not starting, bogging down, or dying. I would not be tempted to walk around the pool barefooted. 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. Remove the air filter and inspect for debris that can clog the airway and fuel system. If it pops/runs its fuel. If the filter is very dirty, wash it in a mild dish detergent and water solution, and rinse from the inside outward until the water runs clear. Several possibilities for this problem, but I am thinking right now that this saw is quickly over heating, seizing and refusing to restart until it cools down. Look up "McCullock chainsaw tool" for the postings and you will find instructions in making the tool and a source where you can buy one. Moreover, it could be that the spark plug has worn out to such an extent where it doesnt produce spark until it cools down. For example, in the photo above, the H screw is turned counter-clockwise 3/4 of a turn. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. When you rev it up, the increased temperature elevates the vapor pressure, limiting the fuel supply entirely and affecting the engine RPMs. Dont over-adjust and allow the RPMs to increase too much or you will damage the engine. The 1 week between starts makes little sense . Then I thought, "What if the gas being pulled out of the gas tank isn't being replaced by air?" How old is it? Check for this problem the next time your saw dies when it's hot. The fuel filter is a small cylinder-shaped part located inside the fuel tank. Before making any repairs, shut off your chainsaw, wait for all moving . I would love quartz but the price tag is just too much right now. Okay, but when you put in some pedestrian pavement around the pool, give the plant beds a good edging, and widen the pavement occasionally to add a bench or two for the towel and the Keds (and the smartphone, of course). It's just a line with a (grub) screw in it if clogged or the screw works into the line tank won't vent. It even gives us gorgeous Fall color from there on in. 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. 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 . Check for any gaps that could be the culprit to ignition and fuel issues. 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. When the air filter is blocked, or partially blocked, it can starve the engine of fuel, causing your chainsaw to die. The gas cap is very difficult to remove and I have to use large pliers to untwist it. Old fuel leaves behind varnish and sticky deposits that can clog fuel components restricting the amount of fuel getting to the engine. You should invest in a carburetor repair kit. When I checked the fuel line, if broke in half in my hand. Musta gotten blurry and missed that. Click to reveal Doing so will put the engine at risk of permanent damage. How is the impulse line? This implies a blockage, either in the carburetor or in the fuel lines. Beware that the fuel tank can be under pressure. 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). A worn or damaged piston and cylinder will cause this problem. Also, check the carburetor and inspect for any leakage/fuel blockage. Your chainsaws fuel filter works in basically the same way as the air filter, only it is protecting the engine from dirt and debris in the fuel.
stihl chainsaw runs for awhile then dies