dave Posted March 19, 2012 Share Posted March 19, 2012 I need some sage wisdom regarding my fuel pump. It has started making the priming sound all the time (louder sometimes than others). It is newish and was running great for the last 6 months. It makes this sound even with the fuel cap open and the bike never sputters or stalls. It hasn't been run out of fuel, no kinks in the lines (that can be seen). Any thoughts??? Thanks! Link to comment Share on other sites More sharing options...
luhbo Posted March 20, 2012 Share Posted March 20, 2012 What exactly is the priming sound? Hubert Link to comment Share on other sites More sharing options...
dave Posted March 20, 2012 Author Share Posted March 20, 2012 It sounds like a mechanical whirring... not chattery, but not smooth either. Link to comment Share on other sites More sharing options...
Kiwi_Roy Posted March 20, 2012 Share Posted March 20, 2012 I have heard if the electric petcock has failed it puts a lot more strain on the pump, perhaps you have an intermittent open circuit there, assuming you still have one of course Link to comment Share on other sites More sharing options...
dave Posted March 20, 2012 Author Share Posted March 20, 2012 I wish I had a manual petcock. Is there a unit that swaps easily to eliminate this as a possible cause? If not, any thoughts on a test on the electric one? As you are aware, electrics are not my forte. Link to comment Share on other sites More sharing options...
dave Posted March 20, 2012 Author Share Posted March 20, 2012 Just discovered that the manual petcock is commonly available. Link to comment Share on other sites More sharing options...
luhbo Posted March 20, 2012 Share Posted March 20, 2012 It makes no difference whether the el. petcock works or not. You wouldn't notice any difference. If your pump sounds strange get another one in reserve asap. No pump no bike, so to say. hubert Link to comment Share on other sites More sharing options...
Dazguzzi Posted March 20, 2012 Share Posted March 20, 2012 I need some sage wisdom regarding my fuel pump. It has started making the priming sound all the time (louder sometimes than others). It is newish and was running great for the last 6 months. It makes this sound even with the fuel cap open and the bike never sputters or stalls. It hasn't been run out of fuel, no kinks in the lines (that can be seen). Any thoughts??? Thanks! When was the fuel filter changed? That would be my first job as it sounds like the pump is having to work overtime. Link to comment Share on other sites More sharing options...
dave Posted March 20, 2012 Author Share Posted March 20, 2012 The new fuel filter is sitting next to my keyboard laughing at me. The old one has about 9k on it. The spare pump on hand method was my 1st thought, but I am trying to be better about tossing money at my motorcycle project problems before understanding the problem. It stopped making the noise this morning (for now), but I might gather my change together all the same. This is my 1st Guzzi but I am quickly amassing a spare parts collection... a good start on a second Guzzi Link to comment Share on other sites More sharing options...
dave Posted March 20, 2012 Author Share Posted March 20, 2012 When I install the filter and Manual petcock i will run an internal line from the pressure inlet valve directly to the outlet side of the tank to address to issue from another thread regarding the "hump". Link to comment Share on other sites More sharing options...
Kiwi_Roy Posted April 21, 2012 Share Posted April 21, 2012 When I install the filter and Manual petcock i will run an internal line from the pressure inlet valve directly to the outlet side of the tank to address to issue from another thread regarding the "hump". I took a look at doing that, it's a great idea, there must be a couple of useless liters over the hump. If you tilt the bike over to get it to the left side the pump will throw it straight back then start sucking air again. How will you install the line and hold it in place? Link to comment Share on other sites More sharing options...
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