Recent content by MikeT

Thanks for the response. So far the shop said the plugs looked bad, and they did, so they were replaced. The coils may have been the cause since they are 15 years old, I said go ahead and replace all of them since he didn’t charge me any labor on that. We are now down to the ECU flash. Even...

A little harsh my friend. I mean based on what Yamaha says, plugs should last 29,000 miles, I only have 6000. I would also think that at 6000 miles the coils shouldn't have gone. I would also think that through testing, Yamaha would have found out the bike had this same issue if it had to do...

I gave up and brought it to a shop. The guy said the spark plugs looked bad and he replaced them. He also found what looked like arcing on the coils and replaced all of the coils. I then rode it and the bike definitely ran better but the on off is still there. Well, I was watching a video and...

Haven’t pulled the plugs yet but it does stumble in all gears. The rpm is always the same. I didn’t pull the spark plugs because the bike only has maybe 6000 miles on it and I think you are supposed to change the spark plugs at around 20,000 miles if I’m right? So that’s why I didn’t pull spark...

Oh, I know it didn’t do anything to the fuel map. I just stated it to make note that the bike was sputtering before and after the -1. Who knows, you may be spot on and Maybe a coil is going bad. I just hate throwing out 4 coils just to see.

I got a "Healtech" speedo fix for the -1 on the front to calibrate the speedo. I remember that the sputtering happened before the -1 sprocket change also.

If it was a bad coil, would the problem continue throughout the rev range? So all up and down the revs it would have this same problem?

I am looking into the TPS and mine shows 16 at the low end and 93 at the top end. I think for the electronic stuff, coils and those things, I may need to take it to the shop as electronics are not my thing. You mentioned fuel. Does this bike have a fuel filter in it? Where is it located and...

I have recently filled is with 100 octane non-ethanol just to see if there was a problem with the fuel. Well, it still does the surging described above. What do you all think? Would the PCV fix this issue? Is that the only option?

Have any of you used the PCV for this purpose? Was the problem fixed?

So, is this the only fix? Install a PCV and then have it tuned by someone? I guess that would be at the Yamaha dealer?

I may have misread greeno’s post thinking he meant the stock was off 6%. I guess it isn’t but stock, Yamaha has it off some amount. That amount, whatever it is, would need to be added to the 6.25%. No need to mince the numbers, but wow was it off. I used the Healtech speedo healer and it has...

I want to say that I changed my front down to a 16 tooth. I am happy with the bikes performance but be aware that it greatly effects the speedometer. I got one of those “Healtech” things and was able to fix it. Now the speedometer is much better and the gearing is fun.

Did I post this in the wrong area? I am surprised that no one has responded. Is there a better area that this post should go?

I was out riding yesterday after I changed my front sprocket (down one tooth) and adjusted the chain and noticed a surging at about 4500 rpm. My bike is in excellent condition and only has about 5500 miles on it. Only a weekend rider. I only put non-ethanol fuel in it and it runs fine. It...