The tank is generally vented through the gas cap at least it is on my 84 700s
> On May 10, 2018, at 10:01 AM, Corey Sims <[email protected]> wrote: > > That’s the weird part, I did that and fuel flowed back into the gas canister, > but it was almost as if it were gulping into the canister, flow for a few > seconds, then would act like it needed air. Kind of hard to explain I guess. > Is there an air vent somewhere at the top of the tank? Maybe it’s clogged. > I ordered a gravity fed fuel petcock so we will see if that fixes the problem. > But if anyone knows where there may be an air vent on the tank, I’d be most > appreciative. > > Here are a couple of pics of my nighthawk > <image1.jpeg> > > <image2.jpeg> > <image3.jpeg> > Sent from my iPhone > >> On May 10, 2018, at 09:24, Kyle Munz <[email protected]> wrote: >> >> It's easy to test if your current petcock is the issue. Run the fuel line to >> a bucket below the tank, then apply a slight vacuum to the petcock vacuum >> line, it should open up the diaphragm and fuel should flow. If not, you may >> need to rebuild the petcock but that's also an easy job. >> >> >> -Kyle >> >>> On Wed, May 9, 2018 at 6:51 PM, 'Pike' via Nighthawk Motorcycle Lovers! >>> <[email protected]> wrote: >>> Ebay <image1.png> >>> >>>> On May 9, 2018, at 5:48 PM, Corey Sims <[email protected]> wrote: >>>> >>>> So I am in the process of getting my 83 650 rebuilt, been a project and >>>> was my father in laws old bike, so I figured it would be worthwhile to get >>>> back running. >>>> After rebuilding the carbs a friend and I used an aux. gravity fed fuel >>>> tank to shake down the motor and carbs. Bike fired up beautifully and ran >>>> great. >>>> I put my tank on with vacuum petcock and it won't start, spray a bit of >>>> fuel in the carbs and it finally starts, but only when choked up. >>>> Vacuum line is going to the carb, I tested the vacuum and it has a reading >>>> of 10 lbs. or however you measure vacuum. >>>> I pull tank back off and just run a funnel directly to fuel line to >>>> carbs... and voila. Fires up beautifully again. >>>> I am assuming its an issue with the vacuum petcock. >>>> The petcock is brand new. >>>> Long story short-ish, does anyone know where I can find a gravity fed fuel >>>> petcock? >>>> Or is it worthwhile to try and rebuild my original petcock? >>>> Any input is greatly appreciated. >>>> -- >>>> You received this message because you are subscribed to the Google Groups >>>> "Nighthawk Motorcycle Lovers!" group. >>>> To unsubscribe from this group and stop receiving emails from it, send an >>>> email to [email protected]. >>>> To post to this group, send email to [email protected]. >>>> Visit this group at https://groups.google.com/group/nighthawk_lovers. >>>> For more options, visit https://groups.google.com/d/optout. >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "Nighthawk Motorcycle Lovers!" group. >>> To unsubscribe from this group and stop receiving emails from it, send an >>> email to [email protected]. >>> To post to this group, send email to [email protected]. >>> Visit this group at https://groups.google.com/group/nighthawk_lovers. >>> For more options, visit https://groups.google.com/d/optout. >> >> -- >> You received this message because you are subscribed to a topic in the >> Google Groups "Nighthawk Motorcycle Lovers!" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/nighthawk_lovers/Od2IS4ExNUg/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at https://groups.google.com/group/nighthawk_lovers. >> For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/nighthawk_lovers. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/nighthawk_lovers. For more options, visit https://groups.google.com/d/optout.
