Hello everyone,
My name is Chandra. It's been a little over one month since I bought my very first motorcycle... a 2002 GS500. I love everything about this bike... great speed and handling. However, I have noticed that at lower RPMs... occasionally I hear a "popping" sound from the exhaust. Usually happens when I'm taking off from a complete stop but ease the throttle active (most likely due to slower traffic in front of me). This same popping sound also occurs when I'm downshifting in the lower gears. This happens right when I roll on the throttle after pressing down on the gear shift lever. Again... this is still only at the lower RPM range... below 3000 revs.
Has anyone else experienced this? The bike runs great and performs very well. I just don't want this to become a problem that will hurt my new baby!
Any tips, advice, and recommendations are highly appreciated.
That is all. Thank you for your time.
Chandra
popping on accelleration is usually a timing/valve issue. Popping on decelleration is usually a fueling or eaxhaust leak issue.
Is the bike stock? Has it ever had it's valves adjusted? How many miles are on it?
Wow... so I could potentially have two major issues at hand! OUCH.
My bike is completely stock to my knowledge. I'm not sure if it's ever had it's valves adjusted or not. I bought it used from a huge motorcycle dealer here in Southern California. The bike only has roughly 7500 miles on it. I got it when it had 6800 miles on it.
How much does it cost to have the valves adjusted/timed properly?
I'd worry about adjusting the valves, first. Prices always vary...no one here will even be able to give you an idea. You have to call your dealer/mechanic and ask them. Expect somewhere between $200 and $500...maybe more, maybe less. Before worrying about that call the dealer you bought it from and ask about a maintanance record.
sounds to me like it is the fueling issue that mackenzie said. it is caused by little bits of fuel that combust in the muffler can and create those popping noises. check your spak plugs to see if they are corroded or fouled, they might not be igniting the fuel properly. we'll talk about the carbs later :icon_rolleyes:
Yeah check the plugs over...actually just replace them. Filters as well.
If it's more like a spitting sound it could be a sign of fuel starvation, usually muck in the system, probably filters or it could be a small hole or holes in the exhaust. if it's a straightforeward pop like a low intensity backfire, all of the above but don't dive into the most complex issues until you eliminate the simple ones.
Start with a good visual check, look underneath the pipe, clean the plugs and fuel filter anyway and see where it takes you. good luck with your first bike. :thumb:
I'm still waiting for my pipe to spit fire when downshifting... :icon_mrgreen: I bet it would be cool.
Quote from: subc on January 23, 2006, 12:45:49 PM
I'm still waiting for my pipe to spit fire when downshifting... :icon_mrgreen: I bet it would be cool.
it is! while coasting, kill the motor with the kill switch. then give some throttle. start the engine. you should have a fire breathing gs.
I'll check the spark plugs as soon as I get home later today. Hopefully... this problem is resolved by replacing the plugs... quick, easy and simple.... hopefully! :cheers:
I put in brand new plugs earlier today and I still have the same problem. But it seemed less severe and didn't happen as often. I still get a pop occasionally when downshifting and blipping the throttle. :dunno_white:
Quote from: chandra.hp on January 23, 2006, 10:10:56 PM
I put in brand new plugs earlier today and I still have the same problem. But it seemed less severe and didn't happen as often. I still get a pop occasionally when downshifting and blipping the throttle. :dunno_white:
mmm, i think that's normal. RG explained it to me the other day I think. it happens to me too on a 2005 GSF, and I just had the valves done and spark plugs replaced.
..ya know.....this popping on the decel is a constant occurance amongst the 2nd gen SV's....especially after installing an aftermarket exhaust.....it has something to do with the "PAIR" system....air gets injected into the exhaust ports burning off any unused gas...
...remedies for the SV's have been either buying a PAIR removal kit or blocking the PAIR with a bearing or bolt....now...I don't know if the GS has something like a PAIR system on it.....or maybe your bike just needs to get a re-jet...or perhaps one of the other members recommendations....
...I fixed most of my SV's popping by properly adjusting the TPS (throttle position sensor)....amazingly my Suzuki qualified mechanics set it 2500 rpm to high....
HELP!!!!!!!!!!!!!!!!!!!!!!!
My GS500 dies while I'm decelerating! I mean... the engine just dies! I have to quickly pull in the clutch and press on the starter button to turn it on again. This is while I'm going 20+mph!
HELLLLLLLLLLP!!!!!!!!!!!!! This is getting really dangerous!
does the popping noise occur every time you roll on the throttle? I experience popping in low rpms as well, but it stops once the bike is sufficiently warmed up. I'll let the bike sit and run for a few minutes after I start it, and once I start rolling on the throttle it sounds like the exhaust starts to pop. It only does it once for certain rpms through the rev range, and it seems if I rev it (in neutral) once to the redline, it gets it all outta the system and runs fine. since it goes away after I rev it once through the rpm range, I havent really been too concerned with it, but if it's a continuing problem with yours it could be dangerous. pulling into traffic and having the exhaust pop rather than the bike accelerating isn't fun. btw: I've got a 2004 F with K&N pod filters (not rejetted yet); so I'm assuming it'll go away once I rejet. I've also removed the entire exhaust system to pop out the center stand, so maybe it is a leak...