Excessive smoke and no power, please help

[68chevyc10355]

I am new to the forum and was hoping to get some insight from some of the other members. I have a 1998 Banshee with the following mods: HJR mx hardcore port, cool head with 21cc domes, wiseco prolite pistons, Toomey t6 exhaust, vforce 3 reeds, K&N pods, +4 timing, trued and welded crank, stock carbs with 340 mains, 25 pilots, TORS removed, and clip on the needle on 2nd from the top. The current temperature is about 70 and my elevation is about 900’. The motor has 4-5 hrs on it. both sides carry 145 psi. I run Amsoil Saber mixed 32:1. The motor ran fine for the time that I have on it. Then, after I synced both carbs one of the cables had a twist and when I gave it gas the slide turned. The motor revved for 2-3 seconds until I killed it. Ever since then it smokes way more than it should and barely has enough power to propel itself. It takes 14 minutes for it to go from 6 to 5 psi on a leakdown test. It will not hit powerband and will not even idle. Both cylinders carry 145 psi. I have replaced the base gaskets and also the cool head o-rings and have also tried another set of carbs with no change. The choke tube is in place and the plugs are new. It does not smell like burnt antifreeze though. A video link is posted below. Any suggestions?

 

[xXBlessedWithDeathXx]

I click on the link thinking i could help but i`m not sure any more. if it was me i would change oils. i never used Saber but they say mix at 100:1 and you said you mixed at 32:1. if your an Amsoil fan i would try Dominator. i mix that at 40 to 44:1 and love it. i dont think i helped but sorry i couldnt.

[68chevyc10355]

I have ran both Amsoil Saber and Interceptor with identical results, but have never tried Dominator, though I believe it is very similar to Interceptor. I also forgot to add that in the video the throttle is wide open for short bursts and thats how doggy it is.

[volcrano]

I am new to the forum and was hoping to get some insight from some of the other members. I have a 1998 Banshee with the following mods: HJR mx hardcore port, cool head with 21cc domes, wiseco prolite pistons, Toomey t6 exhaust, vforce 3 reeds, K&N pods, +4 timing, trued and welded crank, stock carbs with 340 mains, 25 pilots, TORS removed, and clip on the needle on 2nd from the top. The current temperature is about 70 and my elevation is about 900’. The motor has 4-5 hrs on it. both sides carry 145 psi. I run Amsoil Saber mixed 32:1. The motor ran fine for the time that I have on it. Then, after I synced both carbs one of the cables had a twist and when I gave it gas the slide turned. The motor revved for 2-3 seconds until I killed it. Ever since then it smokes way more than it should and barely has enough power to propel itself. It takes 14 minutes for it to go from 6 to 5 psi on a leakdown test. It will not hit powerband and will not even idle. Both cylinders carry 145 psi. I have replaced the base gaskets and also the cool head o-rings and have also tried another set of carbs with no change. The choke tube is in place and the plugs are new. It does not smell like burnt antifreeze though. A video link is posted below. Any suggestions?

 

how did the slide turn?there is a pin in the carb body and a cut in the slide to make it stay where it should.i dont know how u got that to happen,but check and make sure the carb slides are in the right carbs.the cut out part of the bottom of the slide should face the rear of the carb,so if you look in your air box with the filter off you should see the cut out.if the bottom of the slide is flat,you have them backwards in the wrong carbs,and will make it run rich as there is no cutout to let air in and will make it run like yours is.cutout towards back,flat side to the front.a 2-3 second rev will not hurt the engine,unless u have no oil in the fuel,and if it was cold u could have possibility of cold seize,but thats not the case.hope this does it for you.let us know!!slides in right is very important!!!!if thats not it check electrical,but i would bet slides are the issue.

[yager24]

I click on the link thinking i could help but i`m not sure any more. if it was me i would change oils. i never used Saber but they say mix at 100:1 and you said you mixed at 32:1. if your an Amsoil fan i would try Dominator. i mix that at 40 to 44:1 and love it. i dont think i helped but sorry i couldnt.

Hey man ima say u might be running to much oil. Even tho it calls for that id say u should switch. I run klotz techniplate, and it works very well for me

[68chevyc10355]

I am not sure why, but my carbs do not have the pins that fits in the slot running down the carb. Just to try to eliminate oil I put some mixed fuel at 40:1 using Amsoil Interceptor with no change. I am going to try changing the slides and will be back shortly. Thanks for all the help this far!

[DiSkOe*1]

check the intakes? for cracks? jus a thought...

DiSkOe*1

[volcrano]

I am not sure why, but my carbs do not have the pins that fits in the slot running down the carb. Just to try to eliminate oil I put some mixed fuel at 40:1 using Amsoil Interceptor with no change. I am going to try changing the slides and will be back shortly. Thanks for all the help this far!

hey if they are the stockers and dont havt the pins,throw them away.if that slide moves its gonna fuck shit up and make it run horrible and u mught get lucky and have it slide where its supposed to be.u need that pin,its an absolute necessity!!!youll never get it right if u dont have that!!!!dont change them yet,pull ur filter and look in and see where there at.if there is no pin and u pull them out ull never know if they turned to the wrong position and will be guessing!!!!!!!!

[bode1]

I am not sure why, but my carbs do not have the pins that fits in the slot running down the carb. Just to try to eliminate oil I put some mixed fuel at 40:1 using Amsoil Interceptor with no change. I am going to try changing the slides and will be back shortly. Thanks for all the help this far!

 

I had one of those pins slide out. My slide would spin while it was running but looked right when it wasn't running. It smoked alot and ran like shit with no power, till i figured it out. I pushed it in and JB welded it in so it wouldn't come out and it fixed my problem.

[68chevyc10355]

I switched the slides and it sure came alive. Thanks for all the help, especially volcrano...I am gonna take ur advice n get different carbs because I dont need one of the slides sticking open and ruining a good top end. Time to put the hurting on some 4 strokes . Thanks once again!

[volcrano]

I switched the slides and it sure came alive. Thanks for all the help, especially volcrano...I am gonna take ur advice n get different carbs because I dont need one of the slides sticking open and ruining a good top end. Time to put the hurting on some 4 strokes . Thanks once again!

glad i could help buddy!!!!!!