Author Topic: Popping when engine braking (Read 15443 times)

Rowlander · « **on:** May 17, 2011, 01:49:10 AM »

Before the site crash, I seem to remember a thread saying to plug or remove something to correct this. Could someone please refresh my memory? Thank You in advance.

philipintexas · « **Reply #1 on:** May 17, 2011, 07:12:52 AM »

Guaranteed to work. http://www.holeshot.com/

DaveO · « **Reply #2 on:** May 17, 2011, 10:50:09 AM »

you could use brakes for braking instead of motor. Its what they are made for.

B.D.F. · « **Reply #3 on:** May 17, 2011, 11:03:07 AM »

Well, you have a choice: you can put one plug into the air hose on the right side of the engine, or two plugs in your ears.

There is an air induction hose on the top / right of the engine that draws air into the exhaust and that is what is causing the decel popping. Some folks pull the hose out of the frame (nothing retains or fastens it in there), plug it with something and reinsert it. If you do that though, be careful that the plug cannot work loose from the hose because it will end up inside the frame and will probably end up being sucked down one of the throttle bodies.

Brian

Quote from: Rowlander on May 17, 2011, 01:49:10 AM

Before the site crash, I seem to remember a thread saying to plug or remove something to correct this. Could someone please refresh my memory? Thank You in advance.

Conrad · « **Reply #4 on:** May 17, 2011, 11:03:09 AM »

I think this is for a CA bike but I'm not sure

http://www.holeshot.com/Concours_c14/c14decel_inst.html

B.D.F. · « **Reply #5 on:** May 17, 2011, 11:05:51 AM »

That's the one- all C-14s sold in the US have that air induction system and the way they show blocking the hose will work on any bike.

Brian

Quote from: Conrad on May 17, 2011, 11:03:09 AM

I think this is for a CA bike but I'm not sure

http://www.holeshot.com/Concours_c14/c14decel_inst.html

Rowlander · « **Reply #6 on:** May 17, 2011, 01:03:49 PM »

Quote from: DaveO on May 17, 2011, 10:50:09 AM

you could use brakes for braking instead of motor. Its what they are made for.

You are a genius. What's your e-mail??? Whenever we have a question, we will just go to you directly for the answer. Instead of a simple plug solution, we will just change people's perfectly legitimate riding practices. But hey, a sarcastic comment is so much more helpful than an actual contribution to the community.

Rowlander · « **Reply #7 on:** May 17, 2011, 01:06:28 PM »

Thanks to all for the help. It is not a huge problem, just a minor annoyance that will be nice to get rid of.

DaveO · « **Reply #8 on:** May 17, 2011, 02:04:35 PM »

Quote from: Rowlander on May 17, 2011, 01:03:49 PM

You are a genius. What's your e-mail??? Whenever we have a question, we will just go to you directly for the answer. Instead of a simple plug solution, we will just change people's perfectly legitimate riding practices. But hey, a sarcastic comment is so much more helpful than an actual contribution to the community.

well just throw some $$ at the problem ,dont try to get at the root of it or improve riding skills.

Wild_Bill · « **Reply #9 on:** May 17, 2011, 02:14:35 PM »

Quote from: Rowlander on May 17, 2011, 01:49:10 AM

Before the site crash, I seem to remember a thread saying to plug or remove something to correct this. Could someone please refresh my memory? Thank You in advance.

Do you have the stock exhaust or was it replaced
If it was replaced then the engine is running lean. It should not pop with the stock exhaust

Bill

gflint · « **Reply #10 on:** May 17, 2011, 02:25:34 PM »

When I went to the after market exhaust the popping got bad. I put on a PCV and that reduced the popping but it still exists.

Some people are getting just a little bit snippy here. I do not use the brakes every time I close the throttle so the " use brakes for braking" comment is totally out of line.

Tactical_Mik · « **Reply #11 on:** May 17, 2011, 02:27:45 PM »

Even with flies in and stock exhaust the bike with have decel pops. It's just not very audible. Usually, when making modifications like pulling the flies and/or replacing exhaust will make more audible.

As suggested, plugging that line should fix it.

Rowlander · « **Reply #12 on:** May 17, 2011, 02:47:23 PM »

It is stock exhaust. I have removed the flies and am going to install the pc today or tomorrow. While I'm at it I will throw $$ at it(25 cents) to plug the line and see if the popping goes away. Like I said, it's not a huge problem, nor is it loud, but I would like to get rid of it. I'm not part of the all out throttle or brake crowd. I'm not sure when engine braking became a sin.

Gearhead82 · « **Reply #13 on:** May 17, 2011, 02:48:55 PM »

Yeah the "popping" is normal and doesn't mean the bike is running lean. It's caused by an emissions system that injects fresh air (containing oxygen) into the exhaust which lets any unburnt fuel combust in the exhaust system instead of releasing it into the air. It is annoying with an aftermarket exhaust system. And I've heard it can also interfere with dyno tuning because the extra O2 can cause the wideband O2 sensor to read inaccurately. Plugging the hose will solve the problem.