01 Banshee air leak or bad stator

[broke350]

You could always just pick up a new set of boots while you're at it.  Especially if they're even the slightest bit suspect as to your air leak.

[yamaha driver]

Well I guess it has a timing plate too, I took of the side cover and noticed its at about +6, PO said engine was stock but he didn't own it for very long so I guess not. But that seems pretty far advanced IMO. But I'm new to messing with the timing on these, so what should this be at?

[trickedcarbine]

What fuel? That's quite a bit of timing if you are just running pump fuel.

[yamaha driver]

I have 91 in it now, can I just retard the timing and run 91?

[trickedcarbine]

I would definitely back the timing to zero to see if it makes a difference.

[yamaha driver]

Well I just set it back to zero and put the new clamps on and the plugs turned to a lightish brown with very dark brown waves? But it still cracks apart at high rpm about half way through the powerband, choking it just makes it worse. The pickup coil looks new so maybe it's a rm stator?

[trickedcarbine]

Well, it is possible that the excess timing made it run weird. You mentioned you compensated with richer jetting? If it's clearly responding to less timing, it may be wise to start backing down fuel to see if it cleans up and runs better.

[yamaha driver]

Well I compensated the lean condition with richer jetting which I believe was the intake clamps, I didn't know it had a timing plate, and it's still at 340 mains at about 20F now, but the plugs are seem fine now they aren't wet around the bottom and it barely got hot even after riding it for a while. But it ran great no more low end bog and great power until it just hits almost like a rev limiter.

Edited November 23, 2016 by yamaha driver

[J-Madd]

Well I compensated the lean condition with richer jetting which I believe was the intake clamps, I didn't know it had a timing plate, and it's still at 340 mains at about 20F now, but the plugs are seem fine now they aren't wet around the bottom and it barely got hot even after riding it for a while. But it ran great no more low end bog and great power until it just hits almost like a rev limiter.

Sounds like a bad stator.

 

I know people (rightly) say that jetting is way rich, but I run 25/350s in mine with T5s, KN, no lid, +5 timing and it revs clean throughout. Just feels safer like that because I may ride WFO in 6th for several seconds without letting out.

[broke350]

Agreed. Sounds like stator to me also. Have you tested yours?

[J-Madd]

Agreed. Sounds like stator to me also. Have you tested yours?

My stator is good. I have had that issue you describe with a bad stator though.

[broke350]

Oh, sorry I was asking the op if he tested his yet. I've seen a few vids showing this same symptom.

[J-Madd]

Oh, sorry I was asking the op if he tested his yet. I've seen a few vids showing this same symptom.

Sorry bud. I thought you were OP! I don't know why I thought that LOL

[sleeper06]

IMO opinion you need to get those plugs sealed 100% with no bubbles. Clean holes n plugs with ascetone then use some three bond 1211 and some new hose clamps n retest. Have you ohm tested the plug caps n coil

[sleeper06]

You also need to give sealer 24hrs to dry , I've seen sealer get pushed out without proper drying time