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post #1 of 6 Old 08-16-2013, 11:03 AM Thread Starter
OverDrive
 
Join Date: Jan 2011
Location: NW MO
Posts: 5,367
Soot

Obviously not the best re-location for my license plate bracket, so when I was lazy I just bolted the bracket, reflectors and all, to my rear fender. After a couple of months, noticed today a lot of soot buildup on the reflector right behind the exhaust.

Just wondering if this soot is normal, but doubt anybody else runs such an ill-conceived "reflector/soot collector" setup and it took quite awhile for it to build up to this point. I finally figured out the burning plastic smell I notice when I push it into the basement after riding home is probably the plastic of that reflector: suprised it hasn't melted yet. I'll probably just remove the reflectors. Probably would have been better off with an exhaust tip that angled outward and downward, but the only thing it seems to affect is that reflector.

I'm guessing all KLR's produce some soot but since my exhaust discharges directly aft and this reflector is so close to it, it just builds up there over time whereas otherwise it wouldn't even be noticed.

I run cheap, ethanol-based gas. Any thoughts on whether this is common or whether maybe my mixture isn't optimum? Bike runs good as far as I'm concerned.





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post #2 of 6 Old 08-16-2013, 11:10 PM
2nd Gear
 
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Join Date: Jun 2012
Location: Paradise, NL, Canada
Posts: 378
are you noticing any oil consumption, that seems to be a possibility for the soot. Looks like you done the mod with removing the spark arrestor and the core that would normally block it from expelling over the tail fender but if the soot is a recent occurance, then I would test the following:

in neutral stand next to the bike looking at the exhaust, rev it and see if you see soot before hitting the redline and note the rpm.

My '08 (no mod on the exhaust), who still burns a bit of oil, will exhaust the soot at the 5500rpm range....so far the oil consumption is still cheaper then adding a new piston kit (budget will not permit it yet) so I just keep monitoring oil levels and keep my rpms in a 4000-5000 range. seems to keep down oil consumption and the soot for now.
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post #3 of 6 Old 08-17-2013, 01:12 AM Thread Starter
OverDrive
 
Join Date: Jan 2011
Location: NW MO
Posts: 5,367
Mine doesn't burn any oil. I'm guessing it's normal and the reflector is just in a bad place.



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post #4 of 6 Old 08-17-2013, 11:44 AM
5th Gear
 
Join Date: Oct 2011
Location: Lac La Biche Alberta Canada
Posts: 3,205
Looks like it's running a bit rich to me Planalp. How's the fuel milage?
Mine was sooting up like that so I went down in jet size, from a 145 to a 142 with a KLX needle. It is just black now but not sooty.
Regards....justjeff

It's not a Tractor....It's a LOCOMOTIVE!! Chugga Chugga
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post #5 of 6 Old 08-17-2013, 11:57 AM Thread Starter
OverDrive
 
Join Date: Jan 2011
Location: NW MO
Posts: 5,367
I think the one and only time I've computed my mileage after changes were made (.22 Mod/slide drill/low buck exhaust mod) it was running in the low 40's. I think my fuel mixture screw is out 2-1/4 turns if I recall correctly.



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post #6 of 6 Old 08-17-2013, 04:25 PM
2nd Gear
 
Join Date: Mar 2011
Location: San Pedro, CA
Posts: 129
I've got the same thing. I put a Dyno-jet kit in it. Don't remember the specs but the plug looks good and the mileage is mid forties if I run at ~ 75 and better if I relax a little.
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