Popping

[Regrind]

Got the Sporty mot'd today at last ! & i noticed that its started popping quiet badly when off the throttle slowing down etc! what causes this ? After close inspection at home i noticed theres a small exhaust leak blowing out where the front cylinder down pipe goes into the exhaust silencer ( if you can call slash cuts silencers) could this be the problem & what is the best thing to use to seal it ? Gun Gum ! or just let the buildup of soot over time do it ?
Otherwise all else is good & its nice to be back on the road again

[Hawkeye]

That will do it, a leaking exhaust can cause this 'popping' on the overrun.
Your silencer may not be all the way on the pipe, i found my Sportster silencer was leaving a little of the slot clear of the down pipe. Undone it, push it a little further on and it was ok.

[The Dude]

There are 2 types of exhaust gasket, size wise.
My 883 should have the thinner ones fitted, but with my drag pipes, I use the larger diameter ones, thicker to. My goes fine.

TD

[HOG maniac]

I had the same issue. Tightened the bolts on off I went.

[Regrind]

Well the popping turned into banging & missfireing & poor accelerating, tightened the exhaust manifold nuts & sealed the leaks but still not much better ! Then i put my 'spare' set of spark plugs in & HEY PRESTO runs sweet as a nut again. Turns out one of the plugs had a crack in the ceramic insulation
Isnt it great when its a simple fix in the end Road tested it on a 60 mile blast round my favourite roads today ooohhhhh yes

[Ferrox]

Hi,

I noticed just today, I've had the occasional pop/squeek on decelleration. My bike is a Sportster XL1200C '07 with near 2500 on the clock. Is there anything I should check.

I'm not a mechanic but can tighten up some bolts if need be. Or if the spark plugs need replacing maybe someone has a guide?

[Regrind]

Originally Posted by Ferrox

Hi,

I noticed just today, I've had the occasional pop/squeek on decelleration. My bike is a Sportster XL1200C '07 with near 2500 on the clock. Is there anything I should check.

I'm not a mechanic but can tighten up some bolts if need be. Or if the spark plugs need replacing maybe someone has a guide?

Hi Andrew,
I think a little popping sounds nice but in my case it was all popping & slow go
If your bothered about it try changing the plugs & leads for new & see if that makes any difference, im sure others here with more knowledge than me will say otherwise as they are very knowledgable.
safe riding

[Ferrox]

Yeah popping is nice, unsure about he squeak, sounds like I've scooped up a mouse

I was looking at new spark plugs on ebay, some NGK Iridium ones. Is there any special knowledge required to fit them, I've heard about proper spark plug gaps etc???