StreetSmart Owners Talk - Question about ZX14

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Question about ZX14

Printed From: Brock's Performance
Category: StreetSmart Owners Section (Private)
Forum Name: StreetSmart Owners Talk
Forum Description: A place for StreetSmart Owners to talk GOING FAST.....amongst themselves!
URL: https://forums.brocksperformance.com/forum_posts.asp?TID=1540
Printed Date: April/30/2025 at 12:23pm
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Topic: Question about ZX14

Posted By: eliminator
Subject: Question about ZX14
Date Posted: May/25/2009 at 11:33pm

I just installed a Alien Head exhaust and the Brocks street map, at about 2500 RPM cruseing the bike makes a hissing noise almost like air entering or escapeing and the bike bucks a little. If you are on the throttle she is fine any ideas whats goin on? I have changed the plugs over the winter other than that I havent touched the motor, I re grounded the PC and reinstalled the map dont know what elce to do any suggestions.

Eliminator

Replies:

Posted By: Guests
Date Posted: May/26/2009 at 1:38pm

Can you tell where the hissing sound is coming from? It is possible that if you left a vacuum hose disconnected that it could make that sound.

Posted By: eliminator
Date Posted: May/26/2009 at 5:13pm

It only makes the sound every now and than , I followed the instructions to a tee but maybe it slipped off or wasnt installed in far enough. I will check it out.

Eliminator

Posted By: eliminator
Date Posted: May/26/2009 at 10:10pm

I checked the pipe that was modded and it was fine, I also looked at the coil sticks and one was in the opposite direction from what the repair manual shows so I put that the way it was supposed to be. I will ride her tomorrow to see if there is any difference.

Eliminator

Posted By: eliminator
Date Posted: May/27/2009 at 9:04pm

It is still hesitating in second and third when crusing at about 2500RPM, put on the throttle a little more and it is fine only in that spot in the RPM's.Any ideas? Thanks.

Eliminator

Posted By: Guests
Date Posted: May/29/2009 at 9:11am

Have you tried running MR 11 through it to clean the injectors?

Posted By: eliminator
Date Posted: May/29/2009 at 8:18pm

I ran the ground jumper wire accross to the bike ground post reset the PCIII and re loaded the map. It is running great now but I am still gonna run fuel injection cleaner through it anyway.Thanks.

Eliminator

Posted By: Brock
Date Posted: May/30/2009 at 1:46pm

That's why the private info. exists!

Brock

Posted By: eliminator
Date Posted: July/09/2009 at 10:10pm

I just installed the Manual cam chain tensioner and deciced to check the throttle bodies. I tightened up the bottom clamps a bit more they seemed a bit loose top's were ok. this may of been causing the sound as well, she is still doing it at about 2500 rpm sometimes. I will keep looking for the cause.

Eliminator

Posted By: eliminator
Date Posted: November/28/2009 at 8:14pm

The bike has stopped the surging at 2500/3000rpm I have recently had the valves checked and shimmed correctly and now she seems fine.

Eliminator

Posted By: Guests
Date Posted: November/30/2009 at 10:37am

Glad to hear, let us know if you need anything else.

Posted By: eliminator
Date Posted: January/18/2010 at 8:15pm

when I went to put my bike up for the winter I notticed she was doing the same thing again. I have been hearing that the speedo healer could be causing this problem gonna pull the wires and make shur they are conected good. Keep ya posted again!!!!lol.

Eliminator

Posted By: eliminator
Date Posted: September/25/2011 at 9:15am

Still has the surge gonna pull the fuel pump this winter and see if the filter is clogged.....the sputter is more of a nuisance than a problem, as of now I just learned to live with it.

Eliminator

Posted By: Brock
Date Posted: September/26/2011 at 9:59am

eliminator,

Please Read these:

Please read this about K&N and BMC street filters: http://www.brocksperformance.com/absolutefm/afmviewfaq.aspx?faqid=236 - http://www.brocksperformance.com/absolutefm/afmviewfaq.aspx?faqid=236

Wynn’s Power Charge: http://www.brocksperformance.com/Wynns-Power-Charge-+I771175.aspx - http://www.brocksperformance.com/Wynns-Power-Charge-+I771175.aspx

Check out our Power Charge Test results here: http://www.brocksperformance.com/forum/forum_posts.asp?TID=1717 - http://www.brocksperformance.com/forum/forum_posts.asp?TID=1717

We no longer use the race gas cures - the above works better. I added the note about the filter, just in case.

Brock

Posted By: eliminator
Date Posted: March/23/2013 at 5:44pm

I will pull the K&N filter that I have in the bike and put the stock one back in see if it helps. I hear of other guys having the same problem after changing the gearing.

Eliminator

Posted By: Brock
Date Posted: March/26/2013 at 10:57am

eliminator,

The surge from a gearing change is only on the 2012-13 ZX-14R versions with the wheel speed indicators.

Brock

Posted By: eliminator
Date Posted: June/07/2014 at 8:22pm

Just seeing the massage the bike is still surging, I have a go pro gonna try to put the camera near where I hear it and send you the video. also gonna try to disconnect the speedo healer see what happens.

Eliminator

Posted By: Brock
Date Posted: June/09/2014 at 11:02am

eliminator,

I sent you a special map to test. The oxygen content in the fuel in your area may be a concern.

Let me know what you think.

Brock