Need advice. Bogging Banshee.

[mrneg9]

Hey Guys. Just got done fixing up a Banshee that I bought. Need some help on a problem I'm having. I purchased a 1996 banshee. It was in need of some parts as it did not run due to no spark.

Here is a list of the parts I put on:

*set of 06 stock carbs

*Ricky Stator Adj. Timing Plate,Pick up and CDI Box.

* Pro Comp. Tors removal kit.

My spark issue ended up being the CDI.

The problem I now have is the bike seems to bogg in acceleration right as I go to take off. Once I get past that spot she runs ok. Sometime it will pop or backfire a little bit. Something just is not right. I was wondering if maybe it was the timing. I set the timing mark on the zero mark where the casings meet. Do you think that is correct or maybe it needs to go back or forward more a bit ? Any suggestions are much appreciated.

[fastrthnu]

having you timing plate at 0 on the split is giving you tdc timing, so your plate is doing nothing. how many turns out are your air screws? they might be in to far.

[mpbanshee]

Sounds like it may be a jetting issue. What mods are on it (pipes, air intake, etc)? What size jets are in the carbs? Did you clean out all of the jets and passages before installing the carbs?

[mrneg9]

The exhaust and intake are stock. Just a boost bottle.

The jetting is all stock. What ever yamaha put in there.

I am currently running 93 and will turn the timing ahead.

Thanks.

What exactly is tdc when ot comes to the timing plate ?

Also I never messed with the air screws. What should they be at? Thanks.

Edited April 8, 2007 by mrneg9

[mpbanshee]

It means that the ignition fires the plug when the piston is at the top dead center of it's stroke. Advancing the timing to +4 will give you some added low end power. Heres what I would do:

1. run a compression check. (is your 96 on the original top end?)

2. Set the air screws on the side of the carbs to 2 turns out from snug.

3. Remove the carbs one at a time, and clean out all the jets and passages.

4. Make sure the carbs are synched after you put them back on.

[mrneg9]

It means that the ignition fires the plug when the piston is at the top dead center of it's stroke. Advancing the timing to +4 will give you some added low end power. Heres what I would do:

1. run a compression check. (is your 96 on the original top end?)

2. Set the air screws on the side of the carbs to 2 turns out from snug.

3. Remove the carbs one at a time, and clean out all the jets and passages.

4. Make sure the carbs are synched after you put them back on.

 

I will advance to +4 set the air screws 2 out. I cleaned the carbs before I installed them and did sync the carbs. Do you know what the compression should be?

 

Hey thanks for your help. Derek

[mpbanshee]

Anything less that 100 PSI, or a 10% difference in compression numbers between the two cylinders, and its time for a rebuild.

[mrneg9]

Hey guys here is an update. Today. I removed the carbs cleaned them. I then advanced the timing +4 degrees and checked the pickup space. It was at 0.20

I set the air screws at 2 turns out. I then let the bike warm up and took it for a ride. It still has the same dam problem. When you first give it gas it hesitates before it takes off. You actually have to play with the throttle to get it past that point then she takes off. Once you slow back down and stop she does it again every time. Puzzled ???????????????????

[fastrthnu]

Hey guys here is an update. Today. I removed the carbs cleaned them. I then advanced the timing +4 degrees and checked the pickup space. It was at 0.20

I set the air screws at 2 turns out. I then let the bike warm up and took it for a ride. It still has the same dam problem. When you first give it gas it hesitates before it takes off. You actually have to play with the throttle to get it past that point then she takes off. Once you slow back down and stop she does it again every time. Puzzled ???????????????????

 

where do you live? elevation&temperature. might need to back them screws out a little more.

[mrneg9]

where do you live? elevation&temperature. might need to back them screws out a little more.

 

Im located on the east coast in Southern NJ.

[okbeast]

Did you look to see what size pilot jet was in the carbs when you cleaned them?

[chrisg]

Hey Guys. Just got done fixing up a Banshee that I bought. Need some help on a problem I'm having. I purchased a 1996 banshee. It was in need of some parts as it did not run due to no spark.

Here is a list of the parts I put on:

*set of 06 stock carbs

*Ricky Stator Adj. Timing Plate,Pick up and CDI Box.

* Pro Comp. Tors removal kit.

My spark issue ended up being the CDI.

The problem I now have is the bike seems to bogg in acceleration right as I go to take off. Once I get past that spot she runs ok. Sometime it will pop or backfire a little bit. Something just is not right. I was wondering if maybe it was the timing. I set the timing mark on the zero mark where the casings meet. Do you think that is correct or maybe it needs to go back or forward more a bit ? Any suggestions are much appreciated.

 

 

This my be the totaly wrong thing and way to simple to think about but could it possible be the rev limitor. Simple fix is to remove the cable that connects to the switch on the parking brake.

 

It can removed and should not effect the overall performace of the bike.

 

hope my shot in the dark helps.

[mpbanshee]

Banshee's don't have rev limiters. He is referring to the parking brake safety switch.

[biglou226]

Banshee's don't have rev limiters. He is referring to the parking brake safety switch.

im having a similar poblem with mine. i just rebuilt the top end, before that it ran fine until of course the piston fried lol. but either way i did nothing to the carbs adjustment wise, but now i also have a slight hesitation when i go to take off and it wont idle either. im not sure where the idle/air screws are at or where they should be at that matter, hell dont sound like i know much of anything huh. well im new to 2 stokes but man i love em now, except for all the tuning issues lol. but just to give you a base to start with here it is:

 

98 banshee

66mm pistons

.080+ bore

timing plate

cool head

21cc domes

billet clutch basket

hinson hd clutch

jetting is good (as far as i know)

fmf reed valves w/spacers

stock 28mm mikuni round slides w/tors

K&N filter w/foam outerwear

no lid on box

boost bottle

toomey t5 pipes

stock ignition system

'72+ sea level

 

i think thats maybe im gettin too much air in the carbs? any help would be greatly appreciated.

Edited April 11, 2007 by biglou226

[350BANSHEE350]

Hey Guys. Just got done fixing up a Banshee that I bought. Need some help on a problem I'm having. I purchased a 1996 banshee. It was in need of some parts as it did not run due to no spark.

Here is a list of the parts I put on:

*set of 06 stock carbs

*Ricky Stator Adj. Timing Plate,Pick up and CDI Box.

* Pro Comp. Tors removal kit.

My spark issue ended up being the CDI.

The problem I now have is the bike seems to bogg in acceleration right as I go to take off. Once I get past that spot she runs ok. Sometime it will pop or backfire a little bit. Something just is not right. I was wondering if maybe it was the timing. I set the timing mark on the zero mark where the casings meet. Do you think that is correct or maybe it needs to go back or forward more a bit ? Any suggestions are much appreciated.

 

is this your first banshee?

does it have stock pipes and filter and what not?

if it has pipes or filter or even snorkal removed that could be jetting. i think it is jtting overal though