I just recently picked up what I was hunting for a while; a relatively clean '89 Hawk. Seems to have a couple issues however, and I could use some advise for narrowing down what they could be. BTW, sorry for the wordy description below!
I'm not sure how the fuel pump is supposed to function, but it seems to not work consistantly. 3 times now, once I've gotten ~80-90 miles on a tank, the bike will sputter and die, regardless of what the petcock is set to. The bike will misfire once or twice as a warning, then within ~ 20 seconds, sputter down and cut off. I've taken the cover off the pump, and the metal flapper doesn't consistantly click back and forth; just bumps sporatically.
I thought this was the only issue, so I just made sure to top off every 80 miles are so. However, this evening, after only 40 miles on a full tank of gas, I heard it sputter once briefly while I was on a highway ramp, then a few seconds later, it began to misfire, lose power, and ultimately cut off completely. Since I was on a busy highway, when it began to sputter, and gave it full throttle, and it pulled smoothly as it should for several seconds, then the sputtering got worse. Once parked, I was unable to get it started, and the battery died quickly.
A friend showed up with jumper cables, and the bike cranked right back up (roughly 25 minutes after quitting.) This has been the case each time, although obviously, this time with less mileage on the tank.
Should I be looking at a faulty stator? Maybe a bad ground? Almost definitely a fuel pump?
The bike has 12k miles on it, the main jets have been changed, and it has a full Two Brothers exhaust. Supposedly the battery is new, and one of the previous owners had said that the fuel pump cut off on him once, but he just popped the cover off, and pushed the center pin in to get it started again..
Here's a picture of the lil' devil;
I'm not sure how the fuel pump is supposed to function, but it seems to not work consistantly. 3 times now, once I've gotten ~80-90 miles on a tank, the bike will sputter and die, regardless of what the petcock is set to. The bike will misfire once or twice as a warning, then within ~ 20 seconds, sputter down and cut off. I've taken the cover off the pump, and the metal flapper doesn't consistantly click back and forth; just bumps sporatically.
I thought this was the only issue, so I just made sure to top off every 80 miles are so. However, this evening, after only 40 miles on a full tank of gas, I heard it sputter once briefly while I was on a highway ramp, then a few seconds later, it began to misfire, lose power, and ultimately cut off completely. Since I was on a busy highway, when it began to sputter, and gave it full throttle, and it pulled smoothly as it should for several seconds, then the sputtering got worse. Once parked, I was unable to get it started, and the battery died quickly.
A friend showed up with jumper cables, and the bike cranked right back up (roughly 25 minutes after quitting.) This has been the case each time, although obviously, this time with less mileage on the tank.
Should I be looking at a faulty stator? Maybe a bad ground? Almost definitely a fuel pump?
The bike has 12k miles on it, the main jets have been changed, and it has a full Two Brothers exhaust. Supposedly the battery is new, and one of the previous owners had said that the fuel pump cut off on him once, but he just popped the cover off, and pushed the center pin in to get it started again..
Here's a picture of the lil' devil;
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