bike losing power
 

Hey guys

I was riding this afternoon and my 02 hawk just died. It started back up. I have seen the posts for the rectifier, especially the one from Denmah. But could this be caused from anything else????

More info please. If it started back up chances are it's not the charging system. What happened, did it sputter and die, did it have power the whole time?

Re: bike losing power
 

I was riding along, accelerating as normal, and it just died, complete shutdown. Do not recall any sputtering, just a very pronounced drop in sound and acceleration.

Very hard to figure it out over the internet but....check all connections to begin with, battery, inline connections etc. Although it sounds almost like the symptoms of running out of gas. Like I said almost impossible without being there. Did it happen just the one time and then started right back up? Did it die instantly or was it a gradual thing?

Re: bike losing power
 

I noticed last year that when it was warming up, the bike would die out of the clear blue. But had not seen any issues with it while riding. Since the bike is not injected, could the fuel pump be going bad?

No fuel pump on the Superhawk. Vapor lock is possible though did you just fill the tank?

Were the lights still on or did it lose electrical? Did it cough and die, were you accelerating or decel or just at cruising speed?

Re: bike losing power
 

I had let off the gas as I was approaching an intersection. It happened so fast, I am not 100% sure if I lost my lights or not. No I had 1/2 a tank of fuel.

Re: bike losing power
 

I dont not recall hearing it cough. Just flat out quit

Re: bike losing power
 

You may want to have a quick look at the vacuum-actuated diaphragm located in the fuel petcock mechanism. My bike pulled this kind of stunt on me twice in 50,000 miles and both times the diaphragm was torn, causing a fuel starvation problem. It would always start up again after stalling.

Good luck

Mikstr

Re: bike losing power
 

Did the bike started back up just after he died or you have wait some time before to restart it?

Because my girlfriend also had that kind of trouble with is F4 2000, the bike just stop, she wait a couple of minute and the bike stated up!? I was very suspicious, I checked the battery, checked the fuel, changed the spark plugs, and it was still making this, not often but on some long ride!? Hummm :roll:

Like I said on some previous post, I had two R/R failure on my VTR and both time it have done the same thing; just shut down without any warning and blow the main fuse by the way! Thus, I was not thinking it could be the same problem on the F4 but when I saw that it was the same R/R on is 600 and that she was at 36 000Km, I take the chance and I also perform the Yamaha R1 R/R mod on is F4! And after this no more trouble!!!

Could it be just a coincidence!? It's hard to explain but I think that when the poor stock R/R of Honda goes hot when they are old, they could blow up or just stop to work temporary the time they cool down! But this can not be true for all, I had a F3 1997 and two 900RR ( 96 and 98 ) before and none of them make me that kind of trouble!?

It's like a random problem? I don't know, but what I know it's that we no more have these trouble!

Cheers and good luck

Re: bike losing power
 

I was able to start it back up while it was rolling.

These bikes are notorious for stalling when coming to a stop. As a matter of fact most V twins are as well, from the internal pressure. Harley's have a case vent to try to solve the problem which the superhawk has in the breather but obviously that doesn't work. There is a post on here that claims the problem is in the carbs to solve this problem they used a carb slide cleaning and lube but I don't know the success rate.