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Old 01-13-2011, 08:20 PM   #41
LipstickPig
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Default Re: Is your KLR Backfiring...???

My bike has been backfiring so I went down and checked my nuts. The right side one was too loose and the left side one is GONE. Where should I acquire a new one? Specs?

Thanks.
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Old 01-14-2011, 09:07 PM   #42
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Default Re: Is your KLR Backfiring...???

Thanks Wyman
I may replace the gasket anyway just to see, not hard to do.I thought it may be the subframe because the muffler is bolted to it.All the bolts were tight when i checked them but i dont know if there is some flex in the subframe. I see a lot of guys changing the bolts mine is a 09 with 7000 on it maybe i need to do that to.

Thanks for your help.

see ya when i see ya.
Jay
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Old 01-15-2011, 10:12 AM   #43
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Default Re: Is your KLR Backfiring...???

Great reminder post. Very basic but also very useful!

Of course it HAD to degenerate....
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Old 01-16-2011, 03:23 AM   #44
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Default Re: Is your KLR Backfiring...???

Quote:
Originally Posted by wymanwinn View Post
use a long 3/8" extension, 12mm socket and torque wrench...look up at the header bend from the right side of the bike under the radiator overflow...no need to remove anything, even all the flavors of crash bars...

wyman

edit...torque the acorn nuts to 15ft/lbs...alternating until both are right...
I finally got around to doing this tonight seeing as how I ripped the whole bike apart to do the sub frame drill through upgrade and low and behold the nuts were a bit loose. Now they are tight and hopefully that will end the backfire issue.

Seeing as how most stuff is exposed with the seat/tank/covers off I'll be checking every bolt and nut I can see . Apparently Kawi was supposed to do this on my 1000 KM first service but who knows how lazy they were that day.
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Old 01-26-2011, 07:21 AM   #45
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Default Re: Is your KLR Backfiring...???

Yea guys last week I took the exhaust loose to take the head off and I was very suprised how loose the nuts were. On most bikes they are a bit<h to get off and on this one they were almost finger tight on there. Just something to watch out for.
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Old 01-31-2011, 03:47 PM   #46
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Default Re: Is your KLR Backfiring...???

My new (to me) KLR with 8k miles backfires on deceleration and surges somewhat at low even throttle. Nuts tight, altitude around 2500-3000. Only mod is a Jardine muffler and K&N filter.

Ideas?

Tks,
Bob
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Old 01-31-2011, 05:37 PM   #47
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Default Re: Is your KLR Backfiring...???

Quote:
Originally Posted by Mulepick View Post
My new (to me) KLR with 8k miles backfires on deceleration and surges somewhat at low even throttle.
Nuts tight, altitude around 2500-3000. Only mod is a Jardine muffler and K&N filter.

Ideas?

Tks,
Bob
Bob,
IMHO -
FIRST-
Dump the K&N, I used to use one on my 08 and as long as it
was spotlessly clean and reoiled it was OK. If it got ANY dirt on it
is was horrible at airflow which caused surging. Go back to the stock
air filter or better yet get a UNI. You will need the stock filter
basket for the UNI though. I switched to the UNI and you can run
more air through it longer between cleanings depending on riding
conditions.

SECOND-
Now, about the popping...Trust me...You need to do the 22 cent
mod, drill the slide, put on a thumb adjust enricher screw and get
more fuel to the carb. Your Jardine is allowing more air through so
you also need more fuel. Glenn has very good instructions on this forum here:
https://www.klr650.net/forums/showthr...highlight=cent
PM me if you want some tips.....

THIRD-
Now...let me add another bit of info...I have done all of this and still
have some popping on decel. The next thing I am going to tackle is
disconnecting the smog/air injector/california pollution control.
It causes popping on decel and sometimes almost like backfires.
I will let you know when I find the "how to" on this forum.
I think they call it "De-Californication"??????? Dang California!
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Old 01-31-2011, 07:09 PM   #48
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Default Re: Is your KLR Backfiring...???

Thanks for the info. I've read about #2 and I'll add your endorsement to my decision process. Let me know how the desmog works. Though I bought the bike fm a guy in AZ, he neglected to tell me it was a CA model. Can't be as hard as desmogging the Valk.

Bob
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Old 02-13-2011, 10:44 AM   #49
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Default Re: Is your KLR Backfiring...???

I like everything I read so far. My bike's 2 years old and Ive been running the stock air filter but i kept it pretty clean, but I just ordered the Uni filter and the No-toil cleaning kit, it's supposed to be the bees knees!

One of the first things I did was the .22 cant mod, air screw tweak, and drilled the slide. Matter of fact, that's the first thing I do on every bike i have ever had! They are all just way too lean from the factory. Jetting is for emmissions, not performance.

I just de-smogged the AIS, there are directions 'round here for that and it was real straightforward. Not sure it made a difference but a few less places to get a vacuum leak some day.
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Old 02-13-2011, 03:09 PM   #50
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Default Re: Is your KLR Backfiring...???

My '08 used to pop badly on decel. Did the 22c carb mod, didn't make much difference. However I live at 5,000 feet so it might be too rich now!

What did (almost) fix the popping was the 685 kit. Still pops a bit but not nearly as badly as before.

I also de-Californicated mine - there are several threads here on how to do it. Didn't change the running behavior, but it did fix the hard starting problem. With the CA kit, starting the engine while hot was a real bear. I think the CA kit was dumping the expansion gases from the tank into the carb and flooding it. Had to crank it a lot before it would start. Now it starts right up every time. Plus I can get to the rear shock adjuster!

Checked the exhaust header nuts, they are tight.
patrick
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Old 02-21-2011, 03:05 PM   #51
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Default Re: Is your KLR Backfiring...???

well whattaya know ...Mine was poping bad and I did a search here and sure enough the left nut was hand tight at best and the right was gone. all is well.
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Old 02-24-2011, 12:24 AM   #52
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Default Re: Is your KLR Backfiring...???

where do you get new acorn nuts and gasket for the header connection? Dealership?
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Old 02-24-2011, 12:06 PM   #53
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Default Re: Is your KLR Backfiring...???

Bikebandit Microfiche is your friend.....

https://www.bikebandit.com/houseofmot...7947#sch579432

RonAyers.com has it too.

Part #s 11060 and 92210, the gasket and nuts respectivley...
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Old 02-24-2011, 01:00 PM   #54
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Default Re: Is your KLR Backfiring...???

Quote:
Originally Posted by AviatorTroy View Post
Bikebandit Microfiche is your friend.....

https://www.bikebandit.com/houseofmot...7947#sch579432

RonAyers.com has it too.

Part #s 11060 and 92210, the gasket and nuts respectivley...
complete part numbers would be...

11060-1108, gasket, exhaust pipeholder c
92210-1132, nut
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Old 02-24-2011, 06:55 PM   #55
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Default Re: Is your KLR Backfiring...???

WOW,

Much appreciated guys!!
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Old 03-12-2011, 04:55 AM   #56
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Default Re: Is your KLR Backfiring...???

Just checked my header nuts now, and yup... they were loose. HUGE thanks to Wyman!!!
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Old 03-17-2011, 01:56 PM   #57
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Default Re: Is your KLR Backfiring...???

This might have been said already. My 2000 KLR was popping on deceleration, which is called an afterfire I take it, so I used some sealant paste from autoparts store shelf. I applied it around the slipon mufffler at the joint to the exhaust, the pops stopped.
Enjoy.
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Old 03-21-2011, 04:32 PM   #58
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Default Re: Is your KLR Backfiring...???

Thanks Wyman. Checked my nuts yesterday and took them off by hand. Hopefully this will take care of my decel backfiring.

Thanks again!
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Old 03-21-2011, 11:18 PM   #59
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Default Re: Is your KLR Backfiring...???

Quote:
Originally Posted by wymanwinn View Post
when does it "squeeeeek"...?
Wyman
To answer your question it squeeks when you hold the rear rack and move the muffler side to side. I may have fixed it. Yesterday i took off the muffler again, cleaned the gasket lightly sanded the pipe, put on a light coat of hitemp sealant let it tack and reinstalled the muffler, checked it today no squeek. I also checked my nuts they were a little loose. Thanks for the reminder.

see ya when i see ya
Thanks Jay
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Old 03-30-2011, 05:58 PM   #60
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Default Re: Is your KLR Backfiring...???

I like that popping noise tho.....makes old people glare at u when u engine brake down a hill, lol...

will check mine this arvo and report back

Thanks,
Tobey
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