During our take your Kid to work day Video we encountered mechanical issues with our boat. This would be an indication that the fuel pump would be bad, if you can pump the bulb when the motor hesi-tates, & it will resume running until the carburetor goes dry again. The 'good' engine still ran fine sharing the line and the 'bad' engine same problem. (12) C $12.74. is either blockage (bad filter, kink, whatever), or your pump is shot. I have a 2010. If the fuel pump is bad, you can keep the motor running by squeezing the primer bulb in the fuel line. Is the fuel line in okay shape? Whining noise coming from the gas tank; This is one of the earliest signs of a bad fuel pump. Symptoms of a Bad Fuel Pump. fuel line with primer bulb. Even a small air leak can lead to starting problems, especially if your motor is fuel injected. Even when I backed of the 'good' engine to see if it was hogging the fuel- didn't make a difference. The first symptoms of a problem started on a recent, night road trip. Two carburetors one for each cylinder and then just a front face plate. Top Rated Seller Top Rated Seller. Over time fuel hoses can dry out, and begin to leak fuel vapors. walleye_wisdom. I started seeing smoke from my mirrors in the other cars' headlights coming out the tailpipe even when I wasn't driving it hard. Here’s a look at the more common manifestations of an impending fuel pump failure. Fuel line connectors in engine casing bypassed – line connected directly at low pressure fuel filter – same symptoms. Some of the major causes are condensation of atmospheric pressure, the poorly sealed cap on tank’s top, and the bad top fuel pump. Hard starting is usually the symptom though. It doesn’t matter if it’s in-tank or in-line. As always, thanks for your ideas. Check all fuel line connections and hose clamps. If you step on the gas pedal and do not accelerate right away, then you are experiencing hesitation from the engine.This hesitation could be the result of bad fuel in the internal combustion chamber. The [cause of the] problem [with poor running of the Mercury FOURTSTROKE 115-HP outboard engine] has been diagnosed as bad fuel. Low pressure fuel filter. Fuel injectors are considered to be dirty when the hydrocarbons and additives which all forms part of today’s fuels, together with engine gunk and carbon, cause the injectors to become restricted. There are physical signs that you can feel when your Mariner’s fuel filter is clogging. The first signs of contamination can be seen in your fuel filter. Outboard fuel problems. Buy … Solving water in gas tank symptoms. Having a faulty fuel pressure regulator can also show symptoms of a bad fuel filter. The valve is actually in the barb that the fuel line attaches to on the tank. While some gas engines – inboards, outboards, generators being the most common on cruising boats – have direct fuel injection, most have a carburetor. Fuel injector flow rates, atomization and distribution are affected and this can cause all sorts of drive-ability and performance problems. From United States. If water is found, pump the tank dry from the fuel line or siphon the tank dry. Top Rated Seller Top Rated Seller. A wet spark plug can indicate water in the fuel while a white residue on the plug can point to a plug that is too hot. Trending at C $21.01 Trending price is based on prices over last 90 days. Baystealth 1888 with Yamaha F115 (4 stroke) 2002 15ft Alumacraft with 25 Yamaha 4 stroke If not, you have a leak. After all, they are part of the same system. Went to start the boat up today, it started really hard, and kept dying on me. A fouled spark plug occurs when the plug isn’t burning fuel normally, leaving damage to the plug which can cause the engine not to start. In this case, the check valves are both slightly open and allowing fuel flow at the rate that the engine is using it. Visible cracks along exterior of the hose. Once this happens, immediate cleaning will help, but the best will be a full replacement. Clamp off the fuel line just upstream from the primer ball. July 16, 2006 at 9:31 pm #1250819. So the procedure to adjust this has to begin without the engine running. The fuel filter, therefore, sits anywhere along your car’s fuel line between the fuel tank and your fuel injectors (or carburetor in older cars). Big Sky Country Helena, MT (Adel, IA home) Posts: 1,160. There's six bolts here that hold this plate on and that's the plate that the reed valves attach to. You don't always see fuel. Listen for unusually air sucking sounds as you squeeze. Any sort of fuel leaks should be addressed as soon as possible. Using the vacuum pump apply a vacuum to the fuel line at the hose that is normally connected to the inlet of the fuel filter downstream from the lift pump. Tested with another tank/fuel line/bulb – same symptoms. C $19.05. It will either take your vehicle a few seconds to respond to the gas pedal before it accelerates, or it won’t accelerate at all.The faster you try to go, the more apparent this symptom will be. Find and fix that leak. Usually a bad or failing fuel hoses will produce a few symptoms that can alert the driver of a potential issue. Outboard motors archive 2000-2004; FUEL PUMP PROBLEM SYMPTOMS. Brand New. When the outboard is running normally, the engine’s fuel pumps create a slight vacuum in the fuel hose. Regardless of the type of fuel pump that your vehicle has, it will still manifest almost the same bad fuel pump symptoms. Timing is on, but I am getting lots of smoke out the tailpipe. 2002 19ft. A clogged fuel line in the car is akin to clogged arteries. FUEL LINE HOSE ENGINE CONNECTOR 22-13563Q3 OUTBOARDS MERCURY MARINER YAMAHA 3/8 . They sometimes fail and you get those kinds of symptoms, we had a similar situation on mates Striper. Alejandro Uria is the co-founder of MarineCarburetors.com and I asked him if he could shed a little light on the most frequent carb problems. If the fuel is not clear or has a sour odor, the tank should be cleaned. Examine the fuel in a clear container. Signs of a Bad Fuel Filter: Mercury Mariner Typical Fuel Filter. The outboard fuel pump has a sensitive diaphragm that receives a suction signal from a piston cylinder so the pump can deliver fuel. All in all, while driving if you experience revving or sputtering and delayed acceleration, this clearly point towards the water in gas symptoms. A fuel demand valve is a solution that was made by the industry to be able to combat the problems that the new outboard fuel tanks were having. A normal spark plug will appear dry with a grayish color. 2 product ratings - Mercury Outboard 200 20hp Fuel line adapter check unit 22833. If the cylinder has a leak, the pump pulse signal will not be strong enough to send the proper amount of fuel to the cylinder. 11,803 Posts #4 • Aug 4, 2008. 12 Symptoms of a Clogged Fuel Filter (How to Tell if a Fuel Filter is Bad) Lower Engine Performance; Any weak fuel filter will cause the engine to misfire and perform very low. Keeping the filter clean goes a long way to keeping your engine running right. Do you have a fuel shut-off valve, and if so, is it open? 1. May 25, 2014 – At one point it lets me rev the motor then a few seconds later it sputters again till it dies. It wouldn’t start up after that. [Unclear] wants me to take the boat out of the water, to their shop, to pump out the fuel (at a high price). A clogged fuel filter(s), bad fuel line, faulty lift pump, faulty high pressure pump, bad pump grommets in the VST (Vapor Separator Tank), bad air compressor, faulty pressure regulator, faulty fuel rails or rail fuel lines, a bad tracker valve, bad fuel injector or a bad air injector are just a few of the items which can cause improper pressures. Squeeze the primer bulb and make sure fuel is flowing. Inspect the water-separating fuel filter on larger engines. If you’re at a 70 degrees spring day, not too hot out today and already in less than 30 minutes this tank has pressurized and really become quite rigid. Usually a bad or failing fuel hose will produce a few symptoms that can alert the driver of a potential problem. And, fuel filters are cheap. Buy It Now. However, most modern cars now have the filter integrated right inside the fuel tank somewhere near the port where fuel exits the tank and into the fuel line. The fuel pressure regulator is responsible for maintaining the required pressure in the fuel rails. Non return connection at tank. See if the system will hold the vacuum. Fuel odor. What are the symptoms of a bad injector? Does this sound like a bad fuel pump? I setup the other feed to fuel both engines out of the water separator and increased to 3/8" ports for better flow. If it smells of gas it's bad. The fuel line coordinates with various other parts of the fuel system such as the fuel pump, carburetor, fuel filters and fuel injectors. Okay there we go. One of the first symptoms of possible issue with fuel injection lines is a fuel odor coming from the vehicle. I finally got it started and took off, got about 400yd away from the dock, stopped to get something in the boat and the motor died. This cover is a little bit wedged in there so I'm just going to take the pull start off to make them easier to get out. Before taking anything apart, check to see if your engines computer has any trouble codes saved in it. 1. Bad fuels can come from water (condensation), debris (dirt or metal oxidation-rust), algae or varnish build-up as fuel ages. There is a fuel line and there is a choke, though. These older small fuel … Spark plugs. Modern fuels have a shelf life of only a few months, especially when mixed with two-stroke oil, with the fuel leaving a black varnish or gum on the inside of the carburetor when it evaporates. Bad Fuel pressure regulator also show similar symptoms. Low Pressure fuel pump diaphragm Set. Participant. For example, the thermostat of an outboard that runs in salt water will experience far more corrosion than thermostats in outboards primarily used in fresh water, and will need replacing more frequently. Clearly the float is hanging up or the needle is jamming. I recommend an in-line fuel filter placed before the fuel pump. Hooked back up to spare- ran fine. 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