 another popping question
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I have been running the same setup for a few years now, cocktail shaker slip ons(no baffles),AI removed,air box removed and replaced with KnN's, and it was fine for a while.(I rejetted but have no idea what I used) I am backfiring and popping like crazy now.I know this question is asked often but every bike has a different setup and it was ok for a while. Do I need to rejett, adjust air mixture, any ideas would be helpful.
pain is temporary, pride is forever.
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Re: another popping question
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Joined: May 2010
Posts: 5,720
Check Pants
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Check Pants
Joined: May 2010
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Are your shaker exhausts unsupported, how about supports for the carbs as well? Your copper crush o-rings betwixt the head and E. headers may be toast. You can take a unlit propane torch and see if the idle changes on the intakes. Do you still have your TPS still connected? My bikes haven't popped since I un clipped those. IIRC, somebody on here was experiencing the air screws vibrating out of adjustment. Also, a search here (BA.Com), should provide a plethora of info to go on. Common problem and addressed on here, aplenty .
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Re: another popping question
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Joined: Mar 2007
Posts: 5,616
Check Pants
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Check Pants
Joined: Mar 2007
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Quote:
You can take a unlit propane torch and see if the idle changes on the intakes.
You should explain the before someone bles up their bike 
SOLD: 07 Black BA, 39mm FCRs, TPUSA stage 1 head, TPUSA 813 cams, TPUSA 10.8:1 pistons, TTP #3 igniter, Specialty Spares Long Cannons, Tsukayu Hard Bags. 82HP/55tq
NEW: 19 Goldwing Tour DCT
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Re: another popping question
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Joined: May 2010
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Check Pants
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Check Pants
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Your right Z, I assume people have inherit common sense and would only slightly crack the valve. I wouldn't want to be responsible for blesing anybodies engine
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Re: another popping question
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Joined: Mar 2007
Posts: 5,616
Check Pants
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Check Pants
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LMAO... I meant blows up their bike. 
SOLD: 07 Black BA, 39mm FCRs, TPUSA stage 1 head, TPUSA 813 cams, TPUSA 10.8:1 pistons, TTP #3 igniter, Specialty Spares Long Cannons, Tsukayu Hard Bags. 82HP/55tq
NEW: 19 Goldwing Tour DCT
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Re: another popping question
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Joined: Dec 2007
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Quote:
Your right Z, I assume people have inherit common sense and would only slightly crack the valve. I wouldn't want to be responsible for blesing anybodies engine
I assume we are looking for a leak and not trying to heat treat anything.
pain is temporary, pride is forever.
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Re: another popping question
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Joined: Dec 2007
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Quote:
Quote:
You can take a unlit propane torch and see if the idle changes on the intakes.
You should explain the before someone bles up their bike
What is the TPS?
pain is temporary, pride is forever.
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Re: another popping question
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Joined: Apr 2007
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Loquacious
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Loquacious
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The TPS is the throttle position sensor. The CDI unit monitors the position of the throttle plate (TPS) and the speed of the engine (Pick up coil) to determine the correct advance curve for the bike. Disconnecting the TPS places the advance curve in the full throttle map which significantly reduces popping on deceleration. It doens't appear to change the performance of the bike that much according to all who have done it including myself.
12 Rocket Roadster
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Re: another popping question
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Joined: Mar 2009
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Stickman Yogi
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Stickman Yogi
Joined: Mar 2009
Posts: 12,964 |
Yup, I'm a happy camper after disconnecting the TPS. My bike went from serious (and annoying I might add) popping on decel to zero popping with no other noticeable change.
Live to love, love to live.
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Re: another popping question
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Joined: Dec 2007
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Quote:
The TPS is the throttle position sensor. The CDI unit monitors the position of the throttle plate (TPS) and the speed of the engine (Pick up coil) to determine the correct advance curve for the bike. Disconnecting the TPS places the advance curve in the full throttle map which significantly reduces popping on deceleration. It doens't appear to change the performance of the bike that much according to all who have done it including myself. [/quo
Ok so you gonna keep it a secret or you gonna tell me where it is and how to disconnect?te] 
pain is temporary, pride is forever.
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Re: another popping question
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Joined: May 2010
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Check Pants
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Check Pants
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The sensor itself is mounted on your right carb, outboard side (black plastic cap,two security torx fasteners). The easiest way to accomplish a disable, is to follow the wire to atop your rear case and below your carbs. You will find a plug there, unsnap it and your done. They can be a ****** (because of the location), if you have average size hands or larger. Once you have identified the plug, form a plan, long reach needle nose pliers to stabilize it from one side and reach in from the other worked for me. Perhaps, somebody has a better method and will chime in. This seems to only quell the popping during decel.
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Re: another popping question
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Joined: Dec 2006
Posts: 7,028 Likes: 8
New Tires
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New Tires
Joined: Dec 2006
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Before you start disconnecting stuff, try turning the Air Fuel screws out till the popping stops. See if that works first.
Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats.
H. L. Mencken
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Re: another popping question
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Joined: Feb 2006
Posts: 3,099
Loquacious
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Loquacious
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Intake air leak?
Oops, I see that was mentioned already.
Last edited by unclecharlie; 05/14/2012 7:48 PM.
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Re: another popping question
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Joined: May 2010
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Quote:
Before you start disconnecting stuff, try turning the Air Fuel screws out till the popping stops. See if that works first.
how do ya do this?
I think this is my problem. I get a little popping at idle and large pop when I decel. I have removed my crossover pipe and it is only doing it on the left side. I think the a/f ratio on the left carb is my issue.
07 TBA, 32" Turnouts, DIY Freak, hard saddlebags, 18" screen, dresser bars, highway pegs, floorboards, fog lights, amber run/turn lights front, red run/turn/stop lights back, blue speedo/tach lights, LED console lights
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Re: another popping question
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Joined: Jul 2011
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Oil Expert
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Oil Expert
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the air fuel mixture should not have moved but if your carbs are n ot supported it is possible i guess. Under the front of the carb (facing the front of the bike) there scews about half way down the float bowl, you can't see them directly but you will see the opening (hopefuly you have the caps off of them) they are bras and are D shaped. You will need a D shape wrench or a very very small set of needle nose pliers to get in there. Best to set them both up the same. Turn the screw all the way in counting how many times you turn in (so you know where they were at) do this to both, then turn them both out equally to match the one that was turned out the most (if differrent) then once there, turn them out 1/4 turn each. Take it for a ride and see how she goes.
2007 Speedmaster and miss it!
2013 T-Bird Storm and Luvin it!
Catching a yellow jacket in your shirt at 70 mph can double your vocabulary
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Re: another popping question
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Thanks. I am not sure what else it could be. Did the diy freak and rejetted and now the one side pops quite a bit and the other not as much. I do have the carbs supported.
Any other ideas?
07 TBA, 32" Turnouts, DIY Freak, hard saddlebags, 18" screen, dresser bars, highway pegs, floorboards, fog lights, amber run/turn lights front, red run/turn/stop lights back, blue speedo/tach lights, LED console lights
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Re: another popping question
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Joined: Jul 2011
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Oil Expert
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Oil Expert
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could very well be a lien mixture on that one side, or a leak somwhere you have not found yet. I would try the fuel mixture screw first and see how it reacts, if you like just turn that one side out a bit and see how it goes.
2007 Speedmaster and miss it!
2013 T-Bird Storm and Luvin it!
Catching a yellow jacket in your shirt at 70 mph can double your vocabulary
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Re: another popping question
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Joined: Dec 2006
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New Tires
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New Tires
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You said you got rid of the crossover pipe, I assume you mean between the headers under the bike. Check the left side for a leak.
Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats.
H. L. Mencken
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Re: another popping question
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Joined: May 2010
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I do not have a leak. It never popped like this until I did the freak and rejetted.
Yes the crossver pipe on the exhaust has been removed for a bout 2 years now.
07 TBA, 32" Turnouts, DIY Freak, hard saddlebags, 18" screen, dresser bars, highway pegs, floorboards, fog lights, amber run/turn lights front, red run/turn/stop lights back, blue speedo/tach lights, LED console lights
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Re: another popping question
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I noticed popping on my america last weekend in Sedona, never before had I heard it on this bike. I did have major popping issues on my Honda SuperHawk after I installed race exhaust w/o jetting the carbs.
Ifit true that it is just unburnt gases exploding in the headers, then that would point towards a rich mixture, correct?
"stupid's in the water these days, they're gonna drink it anyways, until they don't know right from wrong..."
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Re: another popping question
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Joined: Feb 2008
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Loquacious
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Loquacious
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Quote:
...Ifit true that it is just unburnt gases exploding in the headers, then that would point towards a rich mixture, correct?
Well, that's a big "if"; there's a difference from the lean prolonged burn of decel popping in the pipes/carb-spitting & that of rich mixture "BANG" exhaust ignition.
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Re: another popping question
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In both cases I've only has decel popping.
"stupid's in the water these days, they're gonna drink it anyways, until they don't know right from wrong..."
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Re: another popping question
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Joined: Dec 2006
Posts: 7,028 Likes: 8
New Tires
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New Tires
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Try turning your air fuel screws out till the popping stops. Back 10 years ago when we started installing open pipes that was the cure.
Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats.
H. L. Mencken
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Re: another popping question
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Joined: May 2010
Posts: 189
Adjunct
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Adjunct
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07 TBA, 32" Turnouts, DIY Freak, hard saddlebags, 18" screen, dresser bars, highway pegs, floorboards, fog lights, amber run/turn lights front, red run/turn/stop lights back, blue speedo/tach lights, LED console lights
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Re: another popping question
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Joined: Dec 2006
Posts: 7,028 Likes: 8
New Tires
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New Tires
Joined: Dec 2006
Posts: 7,028 Likes: 8 |
Quote:
In both cases I've only has decel popping.
Actually a perfectly tuned or lean bike with open pipes will pop on decel, I know that sounds counter intuitive.
For example, in the spring of 2003, I installed wide open Septres, rejetted, added a Unifilter and balanced the carbs, the America ran great, but all hell broke lose on decel. I thought well it's too rich, but on this site the advice was to turn out the AF screws, it worked, just a rumble on decel.
Not long after, I took the bike in for it's first scheduled maintenance check. I picked it up, started home and the at the first decel all hell broke lose again. I pulled over and turned the AF screws back out, I had already installed the thumb screw needles.
When I got home, I called the tech that had worked on my bike at Engles and ask what all he had done. He said he had installed some chrome fork covers, changed the oil and completely check out the bike. The tech said the carbs were in perfect balance when he checked them, but the bike was running a little rich off throttle when he hooked it up to the exhaust gas analyzer so he turned in the AF screws. 
Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats.
H. L. Mencken
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