Problem with my cub

[moneybags]

Ok, Today I put my 02 Banshee (mods in sig) back together. When I had it apart. I bumped my timing from +6 to +9. I also leaned my jets and pilot from 155 and 55 to 153 and 52. After putting my Banshee back together

I started it up and let it ideal. I let it run for maby 2 minets. Then when to pull in back into the garage. It felt like it jumped froward. I did not have the clutch pulled in alltheway and I killed it. I tried to fire it up agin and it will not start. I kept kicking it and all it would do is backfire every now and agin.

 

I took the kill switch on my outher Banshee.

I took the coil off my outher Banshee.

I took the CDI box off my outher Banshee.

I checked the compreshion. (175 psi in both)

Put in new sparkplugs.

:: :: Nothing worked, I dont think that it is getting spark. Would you think that it is the pick up by the flywill?

This thing is pissing me off.

 

One more thing. On the coil under the gas tank. Dose the orange wire go to the + or - side. I'd swar that on my outher banshee. The black wire go's to the + and the orange in the -. That just sounds weard to my.

 

[Malott]

Ok, Today I put my 02 Banshee (mods in sig) back together. When I had it apart. I bumped my timing from +6 to +9. I also leaned my jets and pilot from 155 and 55 to 153 and 52. After putting my Banshee back together

I started it up and let it ideal. I let it run for maby 2 minets. Then when to pull in back into the garage. It felt like it jumped froward. I did not have the clutch pulled in alltheway and I killed it. I tried to fire it up agin and it will not start. I kept kicking it and all it would do is backfire every now and agin.

 

I took the kill switch on my outher Banshee.

I took the coil off my outher Banshee.

I took the CDI box off my outher Banshee.

I checked the compreshion. (175 psi in both)

Put in new sparkplugs.

:: :: Nothing worked, I dont think that it is getting spark. Would you think that it is the pick up by the flywill?

This thing is pissing me off.

 

One more thing. On the coil under the gas tank. Dose the orange wire go to the + or - side. I'd swar that on my outher banshee. The black wire go's to the + and the orange in the -. That just sounds weard to my.

 

I have seen one do what you are saying yours did and this one was the pick up by the flywheel. The owners were changing everything and finally someone looked at that and it had moved away from the flywheel and that was all that was causing the problem. I would think it is probably something simple since you had it running. It just sucks because sometimes the simple things are the hardest to find. Good luck.

[BigRed350x]

Why did you bump your timing up that high????

[banshee332]

You could also have to much timing. I know with a pvl if you set it to high it will kick back like a bitch and if you get it to fire it wont run to good. Try setting your timing back down some. to check if you have spark. take the plug out stick it in the plug wire and set on your head as in banshee head.lol. kick her over to see if there is spark

Edited January 21, 2007 by banshee332

[Animalman294]

Yeah, I thought that timing seemed awfully high too................

[moneybags]

I bumped the timing cause dajogerjr said in one of my outher post. Copied and pasted below.

 

By the way, with that motor and domes you're already running race gas. If you have a timing plate, which I'd bet you do since you're at +6...max it out.

 

It only measures up to +10 on the plate, but if you max it out it's about 11 or 12.

You'll like it...promise

 

He had a moter that is pritty much the same. I figered that he is not trying to savatiage my stuff.

I'm sure that he will chim in soon. Heck I got in to start once. I'd think that it's not a timing issue.

 

[BigRed350x]

Well if you don't think its timing, then try and change your jets back to what they used to be and see what it does. Did you do a leak-down test? Have you checked for air leaks? Sure you have good fuel?

[Washburn]

You could be killing it with the timing that advanced. I would go back to what you did and set the timing back to where you had it in the first place. If thats not it try everything else. But before you go buying parts check that timing. Thats my oppion.

[moneybags]

The gas is less then a week old. I dont think that it is not getting spark. Would to much timing cause it not to spark? Will I beable to see a spark betwen the flywill and pickup. If I have the cover off and I kick it over. Kinda like checking for spark on the plugs. Also any input on the coil and what coler wire go's to the + and - side.

[dajogejr]

If the bike started up and ran...then quit, and won't fire now, it's not the timing.

However, just to appease everyone, yes...I'd put the timing back to 0.

That's not going to change anything...but, it's a starting point.

As said, check the pickup coil gap, and make sure it's tight. Set it .015 to .018 and it'll be fine.

 

OHM the stator. If I'm not mistaken, and I don't have my clymers, the orange goes to + on my Nology setup.

I'm not 100% on that. It's a quick 5 second swap, so try it out.

 

I agree with red, you really need to do a leakdown test on yours. Mine was uneven on the cylinder itself on top AND bottom when I got my cub brand new out of the box. I tried every jet combo in the book, pilots, needles and mains...didn't make a lick of difference, however...it started and idled perfectly...even though it had a big enough air leak to suck a shit ton it.

 

Then, check compression. Did you check your squish when you put this together? I know this is supposed to be a bolt together motor, but...it takes some work and these tolerances should always be checked and double checked, even more so on a cub.

[dajogejr]

To be 100% honest, I can't say I'd ever check for spark at the flywheel/pickup. I don't think you will...

You might want to check the plug end caps, possibly replace them...but, you've got a lot of other things to check first...

[blueshee03]

+4 or +5 should be more than enough timing on your setup.if you got it advanced any more than that i'd back it up.as for being able to see spark between pickup and flywheel the answer is no you won't be able to see any.if it were me i'd set timing at +4, check that the gap is right on the pickup and check spark plugs to see if theres any fire there.if your running a stock coil it will run with the orange and black wires on the coil either way.another thing that could of happened is that it could of sheared the flywheel key and the flywheel slipped on the crankshaft.

Edited January 21, 2007 by blueshee03

[odaen]

While I agree with leak-down testing your motor, if you have compression, fuel, and spark, it will at least run. There's something fundamentally wrong with your motor. Since you messed with the timing, that's where I'd start. Being off by even 4 jet sizes will still let the motor fire, it'll just run like shit.

[odaen]

While I agree with leak-down testing your motor, if you have compression, fuel, and spark, it will at least run. There's something fundamentally wrong with your motor. Since you messed with the timing, that's where I'd start. Being off by even 4 jet sizes will still let the motor fire, it'll just run like shit.

 

 

Err, hit send before I meant to. But I'd check the pickup like before mentioned. 9 degrees of advance should still allow the motor to start just fine.

 

Good luck...

[dajogejr]

If you have the stock coil mounted in the stock location, Orange towards the front of the bike, black towards the rear...but, that shouldn't matter.

 

That timing alone on a stock or stockish motor is high...

However, with a good welded crank and a properly setup cub, you can crank the timing way up.

Stop thinking timing in terms of a stock motor, he has a cub.

My personal bike as well as quite a few cubs I've seen crave timing.

What size domes are you running, by the way....and what is the compression PSI?

 

While I agree he can back it down to eliminate that aspect, as long as fundamentally that motor was put together correctly, it should handle 10 degrees or more is so desired.

 

Did you put the motor together yourself?

 

Checking the flywheel key for shear or movement is a great idea, often overlooked. for the hell of it, take the flywheel off and shake it, make sure you don't hear any magnets busted up inside.

 

If the bike started before, and he put new plugs in...the jetting isn't the issue. Sure, as said, it'll run like crap, but...it won't cause it not to start when if he put new plugs in. Even way rich on the pilot/air screw will take a few to foul a plug...