 STRANGE POPPING OR MUFFLED BACKFIRES
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Joined: Oct 2005
Posts: 116
Adjunct
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OP
Adjunct
Joined: Oct 2005
Posts: 116 |
Just noticed on my bike that has less than 2000 miles on it that I have a strange random popping or muffled backfiring on both exhausts and header pipes when at idle. When throttling up it continues but is not as audible because of the loud pipes on my machine. Just wondering if anyone else has experienced a similar situation and what was found or done to correct this problem.... Any help provided will certainly be appreciated. Would almost think timing was off but the popping and muffled backfiring is random and not continous at a regular rate....
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Re: STRANGE POPPING OR MUFFLED BACKFIRES
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Joined: May 2006
Posts: 1,025
Learned Hand
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Learned Hand
Joined: May 2006
Posts: 1,025 |
What is your current setup? (Have you re-jetted or done any mods?)
06BA,-AI,NoBfls,K&NPods,TBS,155/45,2 3/4Out,SidGapPlgs,Wirsnbrs
NawImPrityFknFarFrmOkMan
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Re: STRANGE POPPING OR MUFFLED BACKFIRES
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Joined: Oct 2005
Posts: 116
Adjunct
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OP
Adjunct
Joined: Oct 2005
Posts: 116 |
FREAK INSTALLED, A-1 INSTALLED, RE-JETTED, J.C. WHITNEY EXHAUST SYSTEM, DID MODS AT AROUND 5O0 MILES AND HAVE HAD NO PROBLEMS UP TO THIS POINT IN TIME, BIKE HAS RUN GREAT TILL LAST FRIDAY WHEN THE PROBLEM SURFACED
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Re: STRANGE POPPING OR MUFFLED BACKFIRES
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Joined: Jan 2005
Posts: 12,877
Should be Riding
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Should be Riding
Joined: Jan 2005
Posts: 12,877 |
Check your air mix screws, make sure they are both the same, then adjust them for the best idle. Then balance the carbs.
Benny
Black & Silver '02
Too many mods to list
Not enough miles ridden
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Re: STRANGE POPPING OR MUFFLED BACKFIRES
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Joined: Jan 2005
Posts: 9,223
Big Bore
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Big Bore
Joined: Jan 2005
Posts: 9,223 |
Check your sparkplugs. Better yet, just swap em out.
"Never underestimate the power of human stupidity" - Robert Heinlein
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Re: STRANGE POPPING OR MUFFLED BACKFIRES
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Joined: Jan 2005
Posts: 6,308 Likes: 4
Worn Saddle
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Worn Saddle
Joined: Jan 2005
Posts: 6,308 Likes: 4 |
Check all the vacuum caps too, and be sure they do not have little micro cracks in them. If they do, replace them all! And maybe even do the crossover with 3/16" tubing from carb to carb on the vacuum plugs, after you balance the carbs.
A word to the wise is not necessary. It is the stupid ones who need the advice.
Pat
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Re: STRANGE POPPING OR MUFFLED BACKFIRES
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Joined: Oct 2005
Posts: 116
Adjunct
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OP
Adjunct
Joined: Oct 2005
Posts: 116 |
I certainly appreciate all the inputs to my question. This afternoon looks like I am going to be busy. Will let you all know what I find that corrects the problem. I had totally missed the thoughts on the vacuum caps, thanks Pat. Hope that I get my baby back on the road running right, if not looks like I will be trailering bike to Newnan, Georgia for a warranty repair job..... Thanks once again to all.....
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Re: STRANGE POPPING OR MUFFLED BACKFIRES
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Joined: Jan 2005
Posts: 12,877
Should be Riding
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Should be Riding
Joined: Jan 2005
Posts: 12,877 |
I guess you could check to make sure the rubber boots that hold the carbs to the motor are seated right too.
Benny
Black & Silver '02
Too many mods to list
Not enough miles ridden
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Re: STRANGE POPPING OR MUFFLED BACKFIRES
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Joined: Jan 2005
Posts: 5,172
Saddle Sore
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Saddle Sore
Joined: Jan 2005
Posts: 5,172 |
And all the exhaust connections....
More flags
More fun!
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Re: STRANGE POPPING OR MUFFLED BACKFIRES
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Joined: Oct 2005
Posts: 116
Adjunct
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OP
Adjunct
Joined: Oct 2005
Posts: 116 |
Well, congratualations to Pat... He hit the source of the problem I had first try out... Amazing, guess it comes with Pat's experience tho, lol... It was a cracked rubber nipple on the left carb that was the culprit, micro-cracks as Pat stated. Well, thanks to him and Advance Auto, my baby runs again... I even purchased spares in the event this ever occurs again while on the road.. I really do appreciate the help provided by all to resolve this problem... In the future, I hope to be able to return the favor to another member in distress.... Thanks again
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Re: STRANGE POPPING OR MUFFLED BACKFIRES
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Anonymous
Unregistered
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Anonymous
Unregistered
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Just noticed mine are cracked up. They're not that old. Anyone know of better caps? Maybe made out of some kind of space age material?
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Re: STRANGE POPPING OR MUFFLED BACKFIRES
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Joined: Jan 2005
Posts: 6,308 Likes: 4
Worn Saddle
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Worn Saddle
Joined: Jan 2005
Posts: 6,308 Likes: 4 |
Ok, so tell me something then, what is KimoYogi? Some sorta anime reference?
A word to the wise is not necessary. It is the stupid ones who need the advice.
Pat
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Re: STRANGE POPPING OR MUFFLED BACKFIRES
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Joined: Oct 2005
Posts: 116
Adjunct
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OP
Adjunct
Joined: Oct 2005
Posts: 116 |
FOR PAT: KIMO IS HAWAIIAN FOR JIM MY FIRST NAME AND YOGI IS ASSOCIATED WITH YOGIBEAR THAT APPEARED ON TV WITH THE BIG FAT BELLY, THEREFORE, I AM JIM WITH THE BIG FAT BELLY, LOL.... HOPE THE NOW ANSWERS YOUR QUESTION AS WELL AS YOU ANSWERED MINE.... LOL THANKS AGAIN....
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Re: STRANGE POPPING OR MUFFLED BACKFIRES
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Joined: Feb 2006
Posts: 1,690
Learned Hand
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Learned Hand
Joined: Feb 2006
Posts: 1,690 |
KimoYogi, sent you a PM....
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Re: STRANGE POPPING OR MUFFLED BACKFIRES
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Joined: Jan 2005
Posts: 5,172
Saddle Sore
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Saddle Sore
Joined: Jan 2005
Posts: 5,172 |
Add that to your resume' - "Cracked rubber nipple expert".... 
More flags
More fun!
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Re: STRANGE POPPING OR MUFFLED BACKFIRES
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Joined: Oct 2005
Posts: 116
Adjunct
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OP
Adjunct
Joined: Oct 2005
Posts: 116 |
Thought nobody would catch that one.... Congratulations, my best guess is that Pat does something besides drink beer occasionally.... LOL
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