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    Fuel pump not working

    I am refitting the carbs and fuel system and everything went together okay. However the fuel pump is not pumping fuel. I have shorted the pump and it ticks but it's not pumping fuel when plugged into the loom. Carbs are bone dry.

    I am guessing I have accidentally not plugged something back in properly any ideas on where I have screwed up. I am not good with elastictrickery I know there's little volt Gremlins running around the wires pushing omes and what's but that's about it.

    please help me round up the Gremlins and put them back in the wires

    #2
    If the pump ticks then it is not electrical.

    If the pump itself is not fubared, look to the inlet being blocked (no fuel getting into the pump).

    If you were looking for a support group you're barking up the wrong tree. This place is fulla enablers dude. - Shooter77us

    The bitterness of low quality lingers long after the thrill of a low price has gone. - RacerX450

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      #3
      Ahem I think I might have cracked the problem. It's the battery is dead and not the pump not working. In my defense the battery has a button on top that you press to test voltage. This showed 3 LEDs which means battery fully charged. I switched on the ignition to see if I could spot a fault and noticed that the 3 battery LEDs were now 1 LED.

      Battery now on the trickle charger. I hope it's not Donald Ducked.

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        #4
        Keep in mind on a stock system, the fuel pump will not pump when the key is turned on. Only when the engine is being cranked or running. It is triggered by the ignition system.

        I wire in parallel switches so I can prime my bikes that have sat or have been drained for storage.
        "I couldn't afford NOT to buy it!"

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          #5
          Battery spent 3 days on the trickle charger and seems fine now. Fuel pump is pumping and engine fires up.

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            #6
            Get the proper charger for your battery. And here's how to quick prime your carbs without cranking the motor forever. Screenshot_20220313-081715_Chrome.jpg
            "Hawk Porn" http://picasaweb.google.com/11124379...eat=directlink 1990 NT650-Penske 8981, Race-tech Springs & Gold Valves, Steve Lenac six-piston caliper & EBC rotor,SS Brake lines Ft / Rear lines through SSA ,VFR brake lever, F2 front wheel, F-120/70 R-160/60 Dunlop Roadsmart, Full-Supertrapp Exhaust, Stage 1 Jet kit, K&N Filter, Corbin Seat, Pro-Tec Clip-On's/ Past Rides...1986 VFR700F2 Interceptor / 1979 Yamaha Rd400 Daytona Special

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              #7
              FYI As well there's also a regulator rectifier that is specifically designed for lithium ion batteries for the hawk gt https://www.hawkgtforum.com/forum/ho...fier-regulator
              "Hawk Porn" http://picasaweb.google.com/11124379...eat=directlink 1990 NT650-Penske 8981, Race-tech Springs & Gold Valves, Steve Lenac six-piston caliper & EBC rotor,SS Brake lines Ft / Rear lines through SSA ,VFR brake lever, F2 front wheel, F-120/70 R-160/60 Dunlop Roadsmart, Full-Supertrapp Exhaust, Stage 1 Jet kit, K&N Filter, Corbin Seat, Pro-Tec Clip-On's/ Past Rides...1986 VFR700F2 Interceptor / 1979 Yamaha Rd400 Daytona Special

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                #8
                Originally Posted by SPA View Post
                Get the proper charger for your battery. And here's how to quick prime your carbs without cranking the motor forever. Screenshot_20220313-081715_Chrome.jpg
                Just make sure you short the right relay as I spent a good half hour blowing main fuses until I realised I was trying to short the indicator relay

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                  #9
                  Originally Posted by Zanderk View Post

                  Just make sure you short the right relay as I spent a good half hour blowing main fuses until I realised I was trying to short the indicator relay
                  .

                  Screenshot_20220313-095808_Chrome.jpg
                  "Hawk Porn" http://picasaweb.google.com/11124379...eat=directlink 1990 NT650-Penske 8981, Race-tech Springs & Gold Valves, Steve Lenac six-piston caliper & EBC rotor,SS Brake lines Ft / Rear lines through SSA ,VFR brake lever, F2 front wheel, F-120/70 R-160/60 Dunlop Roadsmart, Full-Supertrapp Exhaust, Stage 1 Jet kit, K&N Filter, Corbin Seat, Pro-Tec Clip-On's/ Past Rides...1986 VFR700F2 Interceptor / 1979 Yamaha Rd400 Daytona Special

                  Comment


                    #10
                    Originally Posted by SPA View Post
                    Get the proper charger for your battery. And here's how to quick prime your carbs without cranking the motor forever. Screenshot_20220313-081715_Chrome.jpg
                    I have a proper Lithium battery charger it's automatic

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                      #11
                      Yep 100% to be fair I realised my mistake when I came in for a break, had a cuppa and then pulled up the wiring diagram on Hawkworks. I am a newbie

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                        #12
                        Originally Posted by Zanderk View Post

                        Yep 100% to be fair I realised my mistake when I came in for a break, had a cuppa and then pulled up the wiring diagram on Hawkworks. I am a newbie
                        I am not a newbie I have had bikes for nearly 50 years and nearly always done my own maintenance and I am happy to work on anything above the crankcase but I am not an expert. Sometimes though your brain gets fixated on something that if you stood back and had a quick break and a think is obvious your doing wrong.

                        I bet all of us have struggled with something that just wouldn't do as it's told I am finally getting old enough and wise enough to know when I have to walk away from a problem.

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                          #13
                          Originally Posted by Fastmongrel View Post

                          I am not a newbie I have had bikes for nearly 50 years and nearly always done my own maintenance and I am happy to work on anything above the crankcase but I am not an expert. Sometimes though your brain gets fixated on something that if you stood back and had a quick break and a think is obvious your doing wrong.

                          I bet all of us have struggled with something that just wouldn't do as it's told I am finally getting old enough and wise enough to know when I have to walk away from a problem.
                          Well I should have said, I’m a Hawk newbie but have been a biker and worked on bikes for the last 40 years. You are entirely right that the biggest learn with is to know when to walk away, reset and work through the problem. I had this recently with my front brakes. Would not bleed through and eventually I tracked it down to the master cylinder. Had to swop out to fix even with a new piston kit, the symptoms were the same. Process of elimination and working through the problem. I’m sure they’ll be plenty more

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