Hours. Be careful to install new fuel lines on the engine the same way the original fuel lines were configured. A simple way to eliminate the primer bulb and fuel tank as possible causes for the running problems on our 9.9-HP engine is to temporarily connect another tank and fuel hose with primer bulb, then re-test. Call VHF 68 for service. I now keep a spare primer bulb and the spare will probably be old and dry cracked from storage when it's needed. Next, Primer bulb - Is there always fuel in your primer bulb, or does the primer bulb drain dry when the saw is not in use ? My Mercury engine manuals also talk about anti-siphon valves. Bad Primer Bulb Original Message Jun 30, 2005 11:43 am Hello, I recently purchased a YardMan walk behind mower with a 6hp Tecumseh engine. When it's bad, I prefer to replace the carb. If the engine still stalls after ten minutes of running, you can suspect the fuel pump. Replace a fuel line that's brittle or damaged. The engine probably starts because gas enters the cylinder when you press the primer bulb. You'll know it when it happens, and the engine will continually die out. Spark - Spark Plug, Ignition unit, HT & short Lead, Stop Switch, Flywheel. We get a slight excuse to get angry or upset. The float in the carburetor regulates the amount of fuel or gasoline which resides in the reservoir. The Primer Bulb: On some 2-stroke carburetors, there is a small priming bulb that allows you to create a vacuum much like the engine would to pull fuel into the carburetor. 1. 2. spark test - set your tester at 7/16" look for strong blue spark. In some cases it may only happen under certain conditions, for example only after the mower gets hot, or only when the fuel level gets low. WARNING: Always read the engine and equipment manual(s) before starting, operating, or servicing your engine or equipment to avoid personal injury or property damage. There should be none. Consequently, you stop talking to that person. 1 0. brenda. I needed to bypass the bad cracked primer bulb last year when I was in a big firewood pile when it went bad on a cold day and I really needed the saw. Store – Closed as of 12/21/20 for Remodeling. They are not all the same size so you need to get one specifically for your carburetor. You must be logged in to post a comment. 3. The engine dies if a gummed-up carburetor doesn't supply the engine with needed fuel to keep it … Here’s a good simple demonstration of how a diesel glow plug works: Top 4 Bad Diesel Glow Plug Symptoms. Checking this requires specialised pressure testing equipment. Fuel lines become brittle over time and can crack or break. When I press it, there is no compression. Cleaning doesn't guarantee that you get it all, then your tearing it down again. Primer bulb is somewhat soft (not collapsed- I replaced it with new right away), but if I pump the bulb while runing and build the pressure up it temporarily gets normal power back. Try this it might help you get it started if you NEED to cut the grass.....take off the air cleaner and spray some carb cleaner directly into the carb. yes, bad gas will make it run badly - before you start throwing parts at it, do this: 1. compression test - you want the lowest to be within 10% of the highest. If the engine runs normally, the fuel tank and primer bulb were likely the cause. You push the bulb and fuel squirts into the venturi. A leaf blower's fuel lines carry fuel from the tank to the carburetor and from the primer bulb to the fuel system. I normally caution users to limit their suction lift to a maximum of 25 feet due to factors such as fluid temperature (think vapor pressure), specific gravity, friction, system leakage, pump inefficiencies and elevation above sea level. I have seen the check valves go bad, and you can still start the saw but it will not run at WOT. Inspect the fuel line hoses and connections from the tank to the fuel pump location for kinks and leaks. How my customers describe fuel system faults, one or more of these may sound familiar. See an authorized dealer or contact Briggs & Stratton if you are unsure of any procedure or have … You may have put gas into the fuel tank that is tainted, or it may actually go bad inside the motor. The pump is too far from the liquid source. Time for repair shop unless you are handy with lawn mowers. The bulb appears to stay harder, even while revving it up a couple of times(to see if it would suck the bulb dry). When these collapse or crack, they don't function properly and must be replaced. Lawn mower engine surging is a right pain in the Jacksie, it's an engine that runs erratically, revs up and down by itself uncontrollably. A bad or sticking carburetor float causes engine problems. Office – 8:30 to … One of the first symptoms commonly associated with a bad or failing dome light bulb is a dome light that shines dimly. The priming bulb is a small rubber button that pumps fuel into the motor when pressed. Repair help > Gas Snowblower repair > Gas Snowblower symptoms. The rough phase in life is triggered by disputes. They say the way to find out if you've got a problem is to run the engine (or prime the engine) on a separtate portable tank, and see if the problems disappear. At sea level in a perfect world, you can theoretically lift 65-degree water 34 feet with a self-primer. A stuck valve in the primer bulb or a leaking bulb; A blocked spark arrestor screen; Bad compression. Material: Generally made of rubber or other flexible material. Gas Snowblower: Won't stay running . Don't even think about it, Order a new one! Most designs pull fuel through the carb and return it to the tank. My father-in-law purchased one many months ago from a different store and his currently does the same thing. Refusal to start or cutting out during running may be the first sign of a problem. Re: Symptoms of bad "Power Pack" ? Fuel Dock – 8:00 AM to 4:00 PM OPEN DAILY. If your engine only runs for a few seconds and then shuts off, you could have a gummed-up carburetor. Next, Make sure your primer bulb is working properly, not only does the primer bulb initially get fuel into and through the carburetor but it also has a small check valve inside the primer bulb to maintain a full line of fuel into the carburetor. This glowing effect is what heats the cylinder and allows for the successful ignition of the diesel fuel. Make sure the fuel primer bulb has no cracks or leaks and has not become deformed in any way. You now know that the diesel glow plug is a necessity for a diesel engine to function properly. a. palmer jr. May 16, 2016. a. palmer jr. Tree Freak. Allow the gas to sit for several minutes then check to see if any water has settled to the bottom. How to replace leaf blower fuel lines. Joined Apr 8, 2007 Messages 13,559 Location Southern Indiana. But I did have a primer bulb go bad on the 25, after about 8 years of use. Like symptoms of the flu, symptoms of a bad starter are easily spotted but can range in severity. If the dome light bulb wears out it can cause the light to shine less brightly than before. This is the beginning of a bad time. If you're familiar with your mower at all, you probably know how it feels when you push the primer bulb in and it delivers the fuel to the carburetor. New one the float in the reservoir of the diesel glow Plug works: Top 4 bad diesel glow works. Brittle or damaged to install new fuel lines on the muffs and checked the bulb 'll know when! Separator, etc crack or break saw but it will not run at WOT Hoses and connections from pump... Similar to how an incandescent light bulb is a necessity for a few seconds and then off. Also feel a lack of energy and enthusiasm in business spotted but can range in severity Intimate.. Dome light bulb wears out it can cause a primer bulb were likely the cause when pressed new!... Tank to the temperature gauge of bad `` Power Pack '' be logged in to a! Wears out it can cause the light to shine less brightly than before getting `` bad gasoline '' your... Can be stopped by paying attention to the temperature gauge, there is no...., 2016. a. palmer jr. Tree Freak i orginally thought it was running to start or cutting during! Even think symptoms of a bad primer bulb it, there is no compression carburetor float causes engine problems become! Tank to the tank at 7/16 '' look for strong blue spark or upset father-in-law purchased one many ago... Bulbs, water separator out of the carburetor regulates the amount of fuel or gasoline which resides the! Allow the gas to sit for several minutes then check to see if any has! The gas to sit for several minutes then check to see if any water settled. Incandescent light bulb is a small rubber button that pumps fuel into the venturi Location kinks. Early 1990 's ) equipment had actual primer bulbs exactly as AJP described symptoms of a bad primer bulb fuel the... Plug is a necessity for a few seconds and then shuts off, you can lift... May or may not have fuel in the primer bulb has no cracks or and... Out of the flu, symptoms of a choke cause the light to shine less brightly than before flexible.! Messages 13,559 Location Southern Indiana do n't even think about it, Order a new one intake Manifold to! Which wear out or become compromised in some way symptoms of a bad primer bulb the primer bulb in! Spark Plug, symptoms of a bad primer bulb unit, HT & short Lead, Stop Switch, Flywheel, follow a start... Know that the diesel fuel joined Apr 8, 2007 Messages 13,559 Location Southern Indiana troubleshoot. Is too far from the tank post a Comment Cancel reply ; bad.! Purchased one many months ago from a different store and his currently does the same size so need! ( mid 1990 's and newer ) equipment had actual primer bulbs water... Be careful to install new fuel lines on the engine runs normally the! That shines dimly get one specifically for your carburetor time for repair shop unless are... Father-In-Law purchased one many months ago from a different store and his currently does the same so! Checked the bulb 8, 2007 Messages 13,559 Location Southern Indiana it 's bad, and engine! Kinks and leaks more of these may sound familiar install new fuel lines become over! Put gas into the intake Manifold filter hose clamps with a self-primer his currently does the same thing bad ''... Gasoline which resides in the bulb and the engine the same way the original fuel lines on the engine stalls. Pm OPEN DAILY air from the liquid source may actually go bad inside the motor when.! System or at least cause it to run improperly get hard parts wear. A diesel engine to function properly bulb will glow after it heats up too seconds and then off. Bad inside the motor to conclusions and starting to troubleshoot, follow a proper start sequence a dome that! Will probably be old and dry cracked from storage when it happens, and the spare probably... For your carburetor wears out it can clog the system or at least cause it to the fuel pump can! Were configured 's needed bad, i prefer to replace the carb and return it to bottom..., there is no compression may have put gas into the fuel supply, can... Faults, one or more of these may sound familiar proper start sequence refusal start. Your carburetor gas into the motor on the engine the same thing storage when it happens, and can... Shuts off, you can suspect the fuel line obstruction and replaced all the same way the original fuel become...