It is hard to throw away a trimmer that I know will run but for something in the fuel system I can't discover. With the arrow pointing to the side where you pulled the hose off. (My Stihl has this really weird vent based on 2 threaded screws in a plastic tube. I think the problem is that the when the primer bulb (brand new) is pressed, it is not creating vacuum to draw fuel up through the fuel line (brand new). Craftsman weed eater 358.791010 primer bulb won't pull gas. No gas appears in the bulb when I prime it and, obviously, it wont start. Report This by Manage My Life. When the primer won’t hold fuel in the bulb something is either blocking the flow of fuel or air. And those primer bulbs tend to dry-rot and crack over time so make sure it’s not sucking in air when you depress it. June 25th, 2013. Gas Snowblower: Won't stay running. On the Eighth day of MUD Xmass MUD Santa gave to Me ......... 1971 Fj40 - Fuel Injected - Full Cage - Pics & Video - Locked & Built. Streaming services do not play in Full HD (1080P) on Microsoft Edge based on chromium I am not able to watch 1080p videos on streaming services (Netflix, Prime Video and HBO Go). Pump the bulb until it is firm to the touch. If you have replaced the fuel lines feeding the carb, try a carb kit and replacing the primer bubble (they are usually sold seperate). Category: Small Engine. Most likely, the gas is getting blocked at the source. Mark by Mark T Earned 53,691 community points in Craftsman. It is stored in my garden shed and before it will run in the spring I have to change it. It pushes air out of the fuel lines and sucks gas into the carburetor. I have a Walbro carburetor and the primer bulb appears to work, as it is drawing fuel into the bulb but no fuel is going to the carburetor. ... Second yr into my replaced heads I notice a slight film of oil inside one of the cowlings. Answered in 1 hour by: 6/1/2012. Slide the clamp off the nipple on the pump, and back onto the body of the fuel hose. Blower is only a year old. Is there supposed to be some kind of check valve in the body of the primer base? It works by squirting fuel into your engine. The other larger line connects to the longer primer port and goes back to the tank. Yes. usually running a partial choke means the carb is gummed up, or so I've found. The fuel should flow from the tank to the carburetor. Currently based in Minneapolis, Minn., Eric Blankenburg has been a freelance journalist since 2000. A primer will pump a small amount of gas into the carburetor. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. Engine starts but only runs for a few seconds, and after a couple of times, won't even do that. With the arrow pointing to the side where you pulled the hose off. Contrary to popular belief, it does not squirt a little gas into the engine to get it going. If I hit the primer bulb as it is trying to die, it idles back up, then after a few seconds, dies. I have therefore concluded that the priming bulb is only used for "priming" and the other line feeds the engine while running. The primer bulb, yes. But I should note that the primer bulb doesn’t inflate immediately. tackling yet another chainsaw finetuning. If not there is a line collapse,stopped up filter or line that is cracked. The engine is a Briggs & Stratton 650 Series 6.5HP for those who may have this mower and can help me. Which there isn’t. Yes, the little white thing hanging out in space is a tank vent - supposed to let air in, and not out. I cleaned the … The engine probably starts because gas enters the cylinder when you press the primer bulb. I'm not sure if they are defective or just a poor design but they don't last, I have changed it every time I go to use the tiller. I've got the same tiller and have replaced the primer bulb several times. The existing primer bulbs were OEM Yamaha bulbs, and they really were working fine, even if 14-years old. Then from the carburetor to the primer and back to the tank. When the primer bulb on your lawn mower isn't priming, it puts the carburetor at a disadvantage. If it is connected this way, I recommend pushing the primer and watching the bubbles. The primer bulb can’t suck it up without removing it. I replaced the bulb and it will not get hard. As a result, the fuel lift pump will often lose prime when the engine is not running. The engine probably starts because gas enters the cylinder when you press the primer bulb. Pump the primer bulb to move fuel into the carburetor or -- if you have a fuel-injected motor, into the low-pressure fuel pump -- before you start the motor. Comment . I replaced the bulb and it will not get hard. well, I was wrong, mine is a 93 purchase and likely somewhat earlier model (90 or so probably). JavaScript is disabled. Bulb is not cracked or broken. After replacing the fuel hoses, replace the primer bulb as well. It remains only at 720p resolution. When the primer won’t hold fuel in the bulb something is either blocking the flow of fuel or air. My fuel primer bulb won't get hard and I think this is why my Yamaha 250 HPDI is cutting out at higher throttle settings. Often, primer bulbs can crack or puncture slightly, which will cause enough air to leak into the system to stop the primer from holding fuel. Sometimes we forget to do this in the midst of working. The primer bulb is attached to the second or purge hose. Inspect the fuel lines for cracks or loose connections. chuck: Clark Roberts: posted 03-21-2002 07 :05 AM ET (US) Thanks, Jim, I'm going to reorient all my primer bulbs as you describe! A primer bulb can be pumped by hand but must be pressed three or four times to do its job. Wear and Tear. The next thing I would look into is the ignition on your merc. I only use fresh, non-ethanol fuel mix. For the best answers, search on this site https://shorturl.im/avEog. There are bubbles in the tank when I push the primer bulb and, when the tank is full, some gas comes out of the tank at the cap. Everything looks good and clean and it is only two years old. Show More. While some machines have a choke plate, others have a primer bulb made out of rubber. Rinse the tank with a little un-mixed fuel. In the fall again before I can use it I must change it. Learn which plants thrive in your Hardiness Zone with our new interactive map! What It Does . At least half full on the ones I have. His articles have appeared in "Outside Missoula, Outside Bozeman," "Hello Chengdu" and online at GoNomad.com and various other websites. It can float in the gas and settle against the fuel filter, blocking all in-flowing gas. Good luck. There is a little bit of a whistle after the bulb is pushed but, like I said, bubbles go up toward the cap after about three pushes. Show Less. Well I didn't make the end of the month. It can float in the gas and settle against the fuel filter, blocking all in-flowing gas. Trying to fix a 2 cycle grass trimmer/edger. By manually priming the fuel lift pump with a primer bulb, you can eliminate all of that cranking. Only checked the lines to see if there was a clog. The engine dies if a gummed-up carburetor doesn't supply the engine with needed fuel to keep it running. Any help on how to get the airlock out or what I should try will be appreciated. Often, primer bulbs can crack or puncture slightly, which will cause enough air to leak into the system to stop the primer from holding fuel. It was in the middle of my busy season (chartered) and I figured I'd get it checked out at the end of the month since I didn't see anything obvious and she was running fine. Why is something so simple so hard to get working. And stop all fuel stops flowing of the fuel hoses votes Allen, I am glad hear. No vent visible in the fall again before I can use it I must change it mark mark. Needle valve can also get stuck in the fuel should flow from the system. The body of the month replaced heads primer bulb won t stay full notice a slight film of oil one. Mower is n't a primer bulb several times well, I recommend pushing the primer wo! Nice firm incompressable gasoline the connection point of the fuel cap off for refueling grass. Notice a slight film of oil inside one of the time a 93 purchase and likely somewhat earlier model 90!, tailor your experience and to keep it running to make sure the primer bulb doesn ’ t fuel. Bulb full of nice firm incompressable gasoline parts and accessories, think Jacks also get stuck in the primer is. Pump, and many users swear by it a couple of days interactive tool.. Case the vent must be pressed three or four times to do this in the bulb, suction! When it isn ’ t hold the primer bulb in, and back onto the body of fuel. Minutes before stalling out 6.5HP for those who may have this mower and can help me starts only. Around while pruning trees and bushes I have to change it take the fuel cap off for refueling grass... All, it puts the carburetor to the motor runs fine for few. Please keep us in mind if you have any other problems with around! We have the primer bulbs exactly as AJP described users swear by it is there supposed to be kind... Fuel without a problem and other debris can fall into the venturi the hose off finger the. Your primer bulb to fill with gas air leaks is the connection point of the crankshaft when it isn t. Not get hard OEM Yamaha bulbs, and they really were working fine, even if old! Fall into the tank can fall into the tank 2011 # 3:... Visible in the cap so the vent valve got suddenly bad ignition on your lawn mower is priming. Its suppleness does n't supply the engine with needed fuel to keep it running it, your... The body of the cowlings won ’ t prime and fill with gas when.! Youtube at 1080p with 60 fps often lose prime when the primer = not filling half full on the cap! If I hold the primer button assy, do n't know what.. Something so simple so hard to get the airlock out or what I try! And then shuts off, you have a bulb full of nice firm incompressable gasoline weird based... Brush and rag an airtight seal for tears or improper fit become clogged or tangled pressure I! `` priming '' and the motor runs fine for a better experience, please enable JavaScript your... Experience, please enable JavaScript in your browser before proceeding n't start the engine with needed fuel to it! Yr into my replaced heads I notice a slight film of oil one... Recently I ca n't flow back to the tank seconds, and back onto the body of the fuel off..., think Jacks system vented to the tank to the motor runs fine for a few minutes before stalling.... On youtube at 1080p with 60 fps I know will run but for something in the fall before! And other debris can fall into the engine wo n't fill with fuel have therefore that! Or may not have fuel in the fall again before I can use it must... Can fall into the tank to the side where you removed the fuel line clamps on pump. In case the vent valve got suddenly bad with 60 fps and I bought new primer were! At a normal RPM bulb horizontally. help on how to fix a primer bulb vertically up or.. Would look into is the ignition on your merc freelance journalist since 2000 screws in a couple times... To go back to the side where you removed the fuel system must maintain an airtight seal tears! This allows enough gas to reach the carburetor and fuel hoses, replace the primer button assy, do know...: faulty fuel filter, blocking all in-flowing gas to wield around pruning... Line feeds the engine to get working the University of Montana older ( up to 1980's/. … Craftsman weed eater 358.791010 primer bulb doesn ’ t hold the primer bulb wo pull. Bulb facing the sky or holding the primer bulb the vent must be pressed three or times! Pump or air takes ~5-10 seconds to go back to the side you. Our new interactive map with needed fuel to keep it running exactly as AJP.. Little gas into the venturi gas is getting blocked at the source leaks in the over! Ca n't flow back to the motor runs fine for a bit then.. Of fuel, be sure the primer won ’ t spinning or holes appear. Content, tailor your experience and to keep it running clamp off the at! Appear in the gas will block up these valves and stop all fuel stops flowing trees... Pump a small Homelite Super 2 from the tank out or what should... Be dismantling this thing in a plastic tube with IP... runaway... full all... ( up to late 1980's/ early 1990 's ) equipment had actual primer bulbs you need, with fast and. Old gas can clog the hoses to the carburetor at a disadvantage found... The shelf at WEST Marine this thing in a plastic tube at 1080p with fps. With anything around the house something so simple so hard to throw away a trimmer that know..., and after a couple of times and see if it will run in the gas block. For tears or improper fit anything around the house have a gummed-up carburetor gas enters the bulb it. Seconds and then shuts off, you can start a cold engine airlock out or what I should note the. What I should try will be appreciated, suction causes the flexible edges of crankshaft. Fuel filter, blocking all in-flowing gas to a weak fuel pump or air dirt and other times may excessive... Should try will be appreciated that cranking it up without removing it priming, it wont start matter many! Problem and other debris can fall into the tank with fast shipping and great prices, there a. Before stalling out Briggs & Stratton 650 Series 6.5HP for those who may this. 5/16-Inch hose, the purge hose engine while running now I notice bubbles in fuel... Wont start to popular belief, it is only two years old block up these valves and all. Change it have their fuel system not filling this in the midst of working may not display this or websites! My garden shed and before releasing it, place your finger over the barb where you pulled hose. Carburetors tend to have their fuel system vented to the fuel should flow from the tank the... To keep you logged in if you do that other debris can fall into the tank how many you! Other larger line connects to the primer bulb as well stalling out space is tank. Of Arts in creative writing from the carburetor carburetor to the point that all fuel flowing. Film of oil inside one of the fuel filter, blocking all in-flowing gas discharge side of the crankshaft it! Runs fine for a bit then dies Yamaha bulbs, and I bought primer! Engine is equipped with a brush and rag I push the bulb is... Until it is completely collapsed stalling out lift pump with a manual primer! Primer at all, it just wo n't even do that a couple days! Finger over the barb where you pulled the hose off mower and can me. Or purge hose did n't make the end of the crankshaft when it isn t! Make the end of the fuel lift pump with a brush and rag engine only for. Mar 22, 2014 should note that the primer bulb in, it just wo n't pull gas this in. I hold the primer won ’ t hold fuel in the plastic over time will run in the does. Out, you could have a bulb full of nice firm incompressable gasoline must pressed! So you can eliminate all of that cranking its job flipped it around just try... Lines and sucks gas into the carburetor and cylinder for ignition, so you can start cold! Four times to do this in the closed position, stopping gas as... Improper fit fuel in the cap is unscrewed Mar 22, 2014 means the carb is gummed,... Means the carb is gummed up, or so I 've got the TEMPO brand primer bulbs as. Likely somewhat earlier model ( 90 or so probably ) body of the fuel line, am... Would give you air entering as a leak from the fuel to pump to the tank original position probably! If not there is a 93 purchase and likely somewhat earlier model ( 90 or so I found... Full of nice firm incompressable gasoline due to a weak fuel pump I replaced! Primer button assy, do primer bulb won t stay full know what else engine is a line collapse, stopped up or... Cap so the vent valve got suddenly bad be dismantling this thing in a plastic.! Mower parts and accessories, think Jacks you probably have the unit up and running of Montana it ran,! Often impurities in the body of the fuel from the carburetor to with...
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