"new" a12

[Tumu Rock]

On Sun, 13 Aug 2000 00:44:47 -0000, BCDIRECT@... wrote: Exhaust mounts were loosened and tightened first at the head and then back. No difference. no backfiring when I shift or back off momentarily, just under engine breaking conditions. Where do I go from here? Any thoughts? Could be the copper crush washer at the cylinder head. Also a $5 part. I would think that if it was, it would still backfire during shifting though (but I'm far from an expert.) part number from http://www.buykawasaki.com is 11060-1108 dat brooklyn bum _______________________________________________________ Say Bye to Slow Internet! http://www.home.com/xinbox/signup.html

[Jeff Gronert]

I keep thinking exhaust leak, but it sounds like you cheaked that out pretty well. My KLR backfired alot when one of the header nuts came loose, the header actually has negative pressure between pulses and will draw air in thru a small leak ,doesn't take much. CaffeineRacer, Long beach, Calif -----Original Message----- From: BCDIRECT@... To: DSN_klr650@egroups.com DSN_klr650@egroups.com> Date: Saturday, August 12, 2000 17:22 Subject: [DSN_klr650] Back to square one / Backfiring

>For those who remember my previous posts... > >My enricher O-ring came in. If yours goes bad or is lost sometime in >the future, I recommend you buy this from the factory rather than get >an O-ring the same size. This ring is flat on one side and round on >the other. It's also elongated to cover the length between the cover >and the carb. It is an exact fit on the carb side. Cost $4.95. > >Anyhow, I installed it and the pilot o-ring I was missing. Also >double checked everything else while the carb was off again (5th >time). The diaphram T units' rubber is in good shape and the spring >seems fine. All the ports in the carb are clear. Paid special >attention to the port between the enricher cover and the throat of >the carb were the lean condition is suppose to be relieved by extra >fuel during engine breaking. All clear. Also checked the float >height, it is 17mm from both sides of the float. Put it back >together and it STILL backfires under engine breaking conditions. >Pilot screw was set at 1.5, 2, 2.5. and 3 with no changes in the pop >pop pop under engine breaking. Exhaust mounts were loosened and >tightened first at the head and then back. No difference. > >I did also have an idle fluctuation problem that seems(?) to be >fixed, but it is a problems that comes and goes. Nothing >consistant. Had no problem with the idle today. Bike runs great >otherwise, good acceleration, strong mid and top end, no backfiring >when I shift or back off momentarily, just under engine breaking >conditions. > >Where do I go from here? Any thoughts? > > > > >Visit the KLR650 archives at >http://www.listquest.com/lq/search.html?ln=klr650 >Support Dual Sport News... dsneditor@... >Let's keep this list SPAM free! > >Visit our site at http://www.egroups.com/group/DSN_klr650 >To unsubscribe from this group, send an email to: >DSN_klr650-unsubscribe@egroups.com >

[Ted Palmer]

BCDIRECT@... wrote: [pop still goes the KLR]

> I did also have an idle fluctuation problem that seems(?) to be > fixed, but it is a problems that comes and goes.

This suggests to me a leak in the intake system, which in this case means the adapter between the carb and the head. It may be worth removing the adapter and checking for the O-ring between the adapter and the head, considering the lack of O-rings already experienced.

> Bike runs great > otherwise, good acceleration, strong mid and top end, no backfiring > when I shift or back off momentarily, just under engine breaking > conditions.

Oh well, 4 out of 5 aint bad. Mister_T

[Mark]

At 2:46 PM +1000 8/13/00, Ted Palmer wrote:

>BCDIRECT@... wrote: >[pop still goes the KLR] >> I did also have an idle fluctuation problem that seems(?) to be >> fixed, but it is a problems that comes and goes. > >This suggests to me a leak in the intake system, which in this case >means the adapter between the carb and the head. >It may be worth removing the adapter and checking for the O-ring >between the adapter and the head, considering the lack of O-rings >already experienced.

In this area, another cause could be a petcock vacuum hose that fell off or is leaky. Mark B2 A2

[Jim & Shannon Morehead]

Hi, My A13's idle also fluctuates sometimes. It varies 200-300 rpm from time to time, but it doesn't do it all the time. Otherwise it runs well with no backfiring. You may have seen some of my earlier posts that detail the mods I've done for comparison to your bike. Do you have stock jets in your carb? Maybe it is running a little lean. Jim

> I did also have an idle fluctuation problem that seems(?) to be > fixed, but it is a problems that comes and goes. Nothing > consistant. Had no problem with the idle today. Bike runs great > otherwise, good acceleration, strong mid and top end, no backfiring > when I shift or back off momentarily, just under engine breaking > conditions. > > Where do I go from here? Any thoughts? > >

[Russell A Locke]

What is considered "broken in" as regards a KLR? Russ Locke Chandler, AZ '97 R1100RT, 96 KDX 200, '85 FJ1100, '98.5 Ural hack, KLR 650 A-12 Please buy my KDX, I'm running out of room!