Strange, that looks like the automatic one I have built into the petcock on both my bike, only it's down by the carbs. There's a rubber diaphragm with a spring in there. The spring closes the fuel valve, when the engine is running the vacuum from the carbs opens the valve and allows fuel to flow. If you have a hole in the diaphragm is could cause the problems you're having.
-Kyle On Fri, Sep 3, 2010 at 11:30 AM, aldicara <[email protected]> wrote: > Hi Allen, > Attached is a picture if the so called "Automatic Fuel Valve" --- I had > refered to it as an "Automatic Fuel Pump" --- my error > > Parts manuals for the Honda Nighthawk CB750SC refer to it as such. Another > name is the "Fuel Line Diaphragm". I've tried to order a new one but it's > no > longer stocked and not available. > My problems started when I was leaking gas and found that it was coming > from > the vent hose (small one to the left on the picture). Took it apart, didn't > really find anything wrong but I did use some gasket sealer . Now there is > no longer any leakage, the engine starts but cuts out after about 30 sec > --- > to me it's starving for gas and I'm almost certain it's due to this valve > which is defective but if anyone has other possible thoughts as to what > else > I would appreciate input. > Thanks, Al > ----- Original Message ----- From: "Allen Thomas" <[email protected]> > To: <[email protected]> > Sent: Friday, September 03, 2010 11:26 AM > Subject: Re: [Nighthawk Lovers] Honda 750 nighthawk fuel pump > > > Can you take a picture? What manual are you using? > > On 9/3/10, [email protected] <[email protected]> wrote: > >> Hi Kurt, >> That's not what I referring to. It's on the other side of the valve and is >> where the gas from the tank feeds into, then on the the carbs. In the >> parts >> manual it's referred to as the "automatic fuel pump". >> Thanks,Al >> >> >> Sep 2, 2010 05:10:41 PM, [email protected] wrote: >> >>> >>> >Okay, so... all joking aside. >>> > >>> >Al, are you referring to this little gem here, this darling right >>> >under the tank? >>> > >>> >http://tinyurl.com/2aewrmb >>> > >>> >If so, that's not a fuel pump, it's a valve. The 750's carburetors >>> >are >>> >gravity fed. >>> > >>> >-Kurt >>> > >>> >-- >>> >You received this message because you are subscribed to the Google >>> >Groups >>> > "Nighthawk >>> >Motorcycle Lovers!" group. >>> >To post to this group, send email to [email protected]. >>> >To unsubscribe from this group, send email to >>> >target="_blank">[email protected]<nighthawk_lovers%[email protected]> >>> . >>> >For more options, visit this group at >>> >target="_blank">http://groups.google.com/group/nighthawk_lovers?hl=en. >>> > >>> > >>> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Nighthawk Motorcycle Lovers!" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]<nighthawk_lovers%[email protected]> >> . >> For more options, visit this group at >> http://groups.google.com/group/nighthawk_lovers?hl=en. >> >> > -- > Sent from my mobile device > > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<nighthawk_lovers%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/nighthawk_lovers?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<nighthawk_lovers%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/nighthawk_lovers?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en.
