speaking of exhaust pipes.... nklr

[Steve Dyer]

A13, rejet + SuperTrapp IDS2, clean air filter, runs great. Have had it a couple years, always starts easily and idles well right after starting even when cold . Open petcock, set enrichener, crank a second to start, adjust enrichener down to 1300 rpm or so for about 10 seconds then ease it off . The KLR burbles contently at normal idle. This even after sitting in the garage in cold weather unridden for a few weeks. Until lately, that is. Last two times out, it has started instantly, but won't immediately idle without continued assistance from the enrichener. Also noticed some popping on deceleration that I do not previously recall hearing. I never let it idle cold for very long after starting - as soon as I have good throttle response I ride off leisurely thru the 'hood and by the time we reach the major thoroughfare she's warm enough to ride normally. The spotty idle and popping disappeared both times as the engine warmed up and the KLR ran as well as ever. Who has an opinion on what changed? Steve in Norman, OK

[Jeff Saline]

On Sat, 4 Apr 2009 18:30:44 -0500 "Steve Dyer" writes:

> A13, rejet + SuperTrapp IDS2, clean air filter, runs great. > > Have had it a couple years, always starts easily and idles well > right after > starting even when cold . Open petcock, set enrichener, crank a > second to > start, adjust enrichener down to 1300 rpm or so for about 10 seconds > then > ease it off . The KLR burbles contently at normal idle. This even > after > sitting in the garage in cold weather unridden for a few weeks. > Until > lately, that is. > > Last two times out, it has started instantly, but won't immediately > idle > without continued assistance from the enrichener. Also noticed > some > popping on deceleration that I do not previously recall hearing. > I never > let it idle cold for very long after starting - as soon as I have > good > throttle response I ride off leisurely thru the 'hood and by the > time we > reach the major thoroughfare she's warm enough to ride normally. > The > spotty idle and popping disappeared both times as the engine warmed > up and > the KLR ran as well as ever. > > Who has an opinion on what changed? > > Steve in Norman, OK

<><><><><><><><><> <><><><><><><><><> Steve, My guess is the pilot jet is clogged just a little bit from gummed up fuel. It's still open but not passing as much fuel as it was. That's causing a lean condition when the throttle is closed. If that's really the case I think a dose of Seafoam could maybe help clear the jet. If the Seafoam doesn't clear the jet maybe a manual cleaning is called for. Just my guess from about 800 miles north. Covered with snow again for the third time in two weeks. Best, Jeff Saline ABC # 4412 South Dakota Airmarshal Airheads Beemer Club www.airheads.org The Beautiful Black Hills of South Dakota 75 R90/6, 03 KLR650, 79 R100RT . ____________________________________________________________ You have a right to seek justice! Click here to find experienced lawyers across the USA. http://thirdpartyoffers.juno.com/TGL2141/fc/BLSrjpTOhjVIyFG1s412UbqhdjCLc2X5c6a0ctECErpDiXlqG59lqAqX1JW/

[dooden]

Sounds like the pilot circuit is plugged to me, making it lean on decel. Myself I would add SeaFoam to the fuel and drain the float bowl and ride it to see if it clears up, might also if you have the pilot circuit adjuster uncapped, give it a extra 1/2 or so out while riding that treated fuel through it. My guess is that will clear it up, then adjust back to normal. Oh buy good gas, my vehicles run best on Shell Dooden A15 Green Ape

--- In DSN_KLR650@yahoogroups.com, "Steve Dyer" wrote: > > A13, rejet + SuperTrapp IDS2, clean air filter, runs great. > > Have had it a couple years, always starts easily and idles well right after > starting even when cold . Open petcock, set enrichener, crank a second to > start, adjust enrichener down to 1300 rpm or so for about 10 seconds then > ease it off . The KLR burbles contently at normal idle. This even after > sitting in the garage in cold weather unridden for a few weeks. Until > lately, that is. > > Last two times out, it has started instantly, but won't immediately idle > without continued assistance from the enrichener. Also noticed some > popping on deceleration that I do not previously recall hearing. I never > let it idle cold for very long after starting - as soon as I have good > throttle response I ride off leisurely thru the 'hood and by the time we > reach the major thoroughfare she's warm enough to ride normally. The > spotty idle and popping disappeared both times as the engine warmed up and > the KLR ran as well as ever. > > Who has an opinion on what changed? > > Steve in Norman, OK >

[Tumu Rock]

--- In DSN_KLR650@yahoogroups.com, "Dooden" wrote:

> > Sounds like the pilot circuit is plugged to me, making it lean on decel. > > --- In DSN_KLR650@yahoogroups.com, "Steve Dyer" wrote: > > > > > > Last two times out, it has started instantly, but won't immediately idle > > without continued assistance from the enrichener. Also noticed some > > popping on deceleration that I do not previously recall hearing. > > Steve in Norman, OK > >

Steve, I agree with Jeff and Dooden that your pilot circuit is likely the culprit. However, just in case, check the exhaust flange for leakage as this could cause a slightly lean condition and definitely can cause deceleration popping if the copper crush washer has deformed. Once the bike is warned up a bit, it might begin to seal again, also causing the symptoms you describe. Could also be the nuts on your flange have loosened. (I hate when that happens). da Vermonster

[Fred Hink]

I'd also check the intermediate pipe connection. Anytime there is an air leak in the exhaust, it could create "popping" by sucking in oxygen and burning unburnt fuel inside the muffler. Start with the easy stuff first. Check to see the headpipe is tight at the head and intermediate connection and then check your pilot jet for blockage. I'd also check your air cut-off valve on the side of your carb too. Fred www.arrowheadmotorsports.com

----- Original Message ----- From: Tumu Rock To: DSN_KLR650@yahoogroups.com Sent: Sunday, April 05, 2009 8:23 AM Subject: [DSN_KLR650] Re: Poor cold idle and popping on deceleration --- In DSN_KLR650@yahoogroups.com, "Dooden" wrote: > > Sounds like the pilot circuit is plugged to me, making it lean on decel. > > --- In DSN_KLR650@yahoogroups.com, "Steve Dyer" wrote: > > > > > > Last two times out, it has started instantly, but won't immediately idle > > without continued assistance from the enrichener. Also noticed some > > popping on deceleration that I do not previously recall hearing. > > Steve in Norman, OK > > Steve, I agree with Jeff and Dooden that your pilot circuit is likely the culprit. However, just in case, check the exhaust flange for leakage as this could cause a slightly lean condition and definitely can cause deceleration popping if the copper crush washer has deformed. Once the bike is warned up a bit, it might begin to seal again, also causing the symptoms you describe. Could also be the nuts on your flange have loosened. (I hate when that happens). da Vermonster [Non-text portions of this message have been removed]

[roncriswell@sbcglobal.net]

I wonder if adding Stabil (which I add to all my lawn care stuff) would be a good idea. I never have problems with the KLR but if I let my Connie (bike not wife whose name is Connie) sit for more than a week or so with today's gas, it starts running rough and have to add Stabil. My old Yamaha IT that sits forever but with Stabil in the gas always starts with a few kicks and runs great. Criswell

On Apr 5, 2009, at 2:00 AM, Dooden wrote: > Sounds like the pilot circuit is plugged to me, making it lean on > decel. > > Myself I would add SeaFoam to the fuel and drain the float bowl and > ride it to see if it clears up, might also if you have the pilot > circuit adjuster uncapped, give it a extra 1/2 or so out while > riding that treated fuel through it. > > My guess is that will clear it up, then adjust back to normal. > > Oh buy good gas, my vehicles run best on Shell > > Dooden > A15 Green Ape > > --- In DSN_KLR650@yahoogroups.com, "Steve Dyer" wrote: > > > > A13, rejet + SuperTrapp IDS2, clean air filter, runs great. > > > > Have had it a couple years, always starts easily and idles well > right after > > starting even when cold . Open petcock, set enrichener, crank a > second to > > start, adjust enrichener down to 1300 rpm or so for about 10 > seconds then > > ease it off . The KLR burbles contently at normal idle. This even > after > > sitting in the garage in cold weather unridden for a few weeks. > Until > > lately, that is. > > > > Last two times out, it has started instantly, but won't > immediately idle > > without continued assistance from the enrichener. Also noticed some > > popping on deceleration that I do not previously recall hearing. > I never > > let it idle cold for very long after starting - as soon as I have > good > > throttle response I ride off leisurely thru the 'hood and by the > time we > > reach the major thoroughfare she's warm enough to ride normally. The > > spotty idle and popping disappeared both times as the engine > warmed up and > > the KLR ran as well as ever. > > > > Who has an opinion on what changed? > > > > Steve in Norman, OK > > > > > [Non-text portions of this message have been removed]

[eddie mauri]

My 03' KLR had the same symptoms that you describe, the easy fix was Seafoam. EddieM (03klr -"la poderosa") [Non-text portions of this message have been removed]

[roncriswell@sbcglobal.net]

Loud Camaros save lives. Criswell

On Apr 6, 2009, at 6:59 AM, Dooden wrote: > Funny, stopped to have a muffler put on my 92 Camaro sat am.... > > Just happen to be out of stock on OEM type mufflers, but they have > this nice performance muffler by Flowmaster they tell me a Series > 40, but pretty sure only series 80 would work for my crossover dual > exhaust. > > Might add very well constructed muffler also. > > Anyway 4+ bills later, of course Cat was showing signs of impending > failure, custom made tail pipes ect > > So now with a deeper tone, more free flowing exhaust we take off > down the highway topping off the car a couple different times and > with this freeflowing muffler that is kinda raspy deep toned I > noted a change in amount of fuel the car is burning, seems the > claim better performance and better milage is true. > > So now running 70+ Mph (mostly) over 550 miles we drove it over the > weekend this 5.0 V-8 is giving me 27.5 Mpg > > Now this has nothing to do with KLR's but thought I would share. > > Dooden > A15 Green Ape > > > [Non-text portions of this message have been removed]