SuzukiSavage.com /cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> loud pop from exaust, at different times /cgi-bin/YaBB.pl?num=1501601960 Message started by madmikesmech on 08/01/17 at 08:39:20

Title: loud pop from exaust, at different times Post by madmikesmech on 08/01/17 at 08:39:20 Really strange, when it's cold in the morning I get loud pops out of exaust. Understandably, but after it warms up is when it gets strange! If I hit a bump in the road it also pops loud from exaust. And at highway speeds 65 mph and above, if throttle is kept steady it pops. Could a low float level be the cause? I haven't yet tried to diagnosis in any depth, ecept apply the choke and it made no differance. No idea of jet sizes and must make air mixture screw adjustable. Any help would be great Mike

Title: Re: loud pop from exaust, at different times Post by Gary_in_NJ on 08/01/17 at 08:58:13 4E42474E4A4846504E46404B230 wrote: Really strange, when it's cold in the morning I get loud pops out of exaust. Understandably, but after it warms up is when it gets strange! If I hit a bump in the road it also pops loud from exaust. And at highway speeds 65 mph and above, if throttle is kept steady it pops. Could a low float level be the cause? I haven't yet tried to diagnosis in any depth, ecept apply the choke and it made no differance. No idea of jet sizes and must make air mixture screw adjustable. Any help would be great Check the exhaust header flange for a loose connection. You may need to tighten the nuts.

Title: Re: loud pop from exaust, at different times Post by Dave on 08/01/17 at 09:52:15 The pop when you hit bumps could be one of the side stand switch shutting off the ignition circuit......or a loose wire somewhere.  When you hit a bump the ignition is momentarily turned off/shorted out.

Title: Re: loud pop from exaust, at different times Post by ohiomoto on 08/01/17 at 10:14:18 "1999 Savage, basically stock, except drag bars, 4"risers, drag pipe,no baffles"   You're bike has to be pretty lean to begin with.  I assume it was mostly running fine and this is a new problem?  If so, I would start with what Gary mentioned.  Make sure you have no exhaust leaks and that it's mounted properly and not moving. Assuming you bike is lean to begin with, any small exhaust leak will cause major issues.  So, check that first.

Title: Re: loud pop from exaust, at different times Post by verslagen1 on 08/01/17 at 10:19:09 3D31343D393B35233D353338500 wrote: Really strange, when it's cold in the morning I get loud pops out of exaust. Understandably, but after it warms up is when it gets strange! If I hit a bump in the road it also pops loud from exaust. And at highway speeds 65 mph and above, if throttle is kept steady it pops. Could a low float level be the cause? I haven't yet tried to diagnosis in any depth, ecept apply the choke and it made no differance. No idea of jet sizes and must make air mixture screw adjustable. Any help would be great Mike Well, "drag pipe,no baffles" will make any diagnostics difficult. No baffles allows fresh air to mix in easily and any left over fuel will pop. choke is not really a choke, it is fuel enricher and said to only work at low throttle. You need to drop the bowl and check the jet sizes, otherwise we're just popping in the dark.

Title: Re: loud pop from exaust, at different times Post by justin_o_guy2 on 08/01/17 at 15:29:05 Check the header flange bolts.

Title: Re: loud pop from exaust, at different times Post by batman on 08/01/17 at 20:17:29 I doubt it pops because of a bump in the road,what your feeling is the bike missing because it's going super lean ,it then pushs the unburnt fuel into the hot exhaust pipe to pop. you can't except to change to a straight pipe without a rejet of the carb. because it runs super lean.

Title: Re: loud pop from exaust, at different times Post by madmikesmech on 08/01/17 at 20:32:39 Thank you sll!! All VERY VALID point. First off Gary, one exhaust flag stud IS broken off.was that way since I bought the bike. I remember from my recent motorcycles a better flowing exhaust needs more fuel. And it DID just start acting this way! When I first bought it, it ran great. I read on this forum that the exhaust flange bolts being loose would make our Savages run odd. I guess it's time for me to do a little TLC and not just ride!!# Thank you ALL you guys can't imagine how much I appriciate the knowledge Ya'll share. Mike

Title: Re: loud pop from exaust, at different times Post by madmikesmech on 08/01/17 at 20:55:39 56554059555A000C340 wrote: I doubt it pops because of a bump in the road,what your feeling is the bike missing because it's going super lean ,it then pushs the unburnt fuel into the hot exhaust pipe to pop. you can't except to change to a straight pipe without a rejet of the carb. because it runs super lean. Understood Batman. Thanks, but this is how I picked the bike up, as it is, I thought the correct jetting changes were made. I must pull the carb to do something to allow the mixture screw to be adjusted any how, so I'll pull the float bowl and get into finding out what jet ting is at that time. The P.O. removed the "cap" from the mixture screw, BUT,some how damaged the slot a screwdriver fits into for adjustment! The pipe was already installed when I purchased the bike. All I've done is put bags and a rear tire on it, the rest of the mods were PRE my ownership. Thank full you all are knowledge and willing to help me figure it all out!

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