my klr is not able to go past 60 mph.

[David Nichols]

It's hard to say what was wrong. The air/fuel screw was set at 2 1/4 turns out, does anyone have an opinion on that? I set it at 1 3/4 turns base on what I've read for a stock exhaust. I think I had a clogged passage. To be sure, I half a$$ed the initial carb cleaning and I paid for that laziness. I only cleaned the main and pilot jets by taking them out at first. I sprayed carb cleaner through all the orifices I could find but I never soaked the carb. The second time I soaked it all and blew compressed air through it all. I also removed and soaked the air/fuel screw, it was pretty dirty and varnished. Since my plug wasn't fouled I am sure I had a fuel supply issue (wasn't getting enough fuel at upper throttle settings). If the plug was fouled or wet, I'd think otherwise. The enrichener issue I had shouldn't have made a difference in the upper throttle range, right? Oh by the way, I have run 2 cans of Sea Foam through it as well. Well, almost 2 cans, a little went into the crankcase... Now, about my oil burning issue. Any thoughts? ________________________________ From: RobertWichert To: "david.r.nichols@..." Cc: DSN_KLR650@yahoogroups.com Sent: Monday, April 2, 2012 9:07 AM Subject: Re: [DSN_KLR650] Re: My KLR is not able to go past 60 MPH. So what do you think was wrong with it? I mean, OK, it was the carburetor, but any idea what was wrong with the carb? Plugged something? Just curious. Glad it's running though! Congratulations. Robert Wichert P.Eng. LEED AP BD&C +1 916 966 9060 FAX +1 916 966 9068 ===============================================

On 4/2/2012 6:43 AM, david.r.nichols@... wrote: > > I wanted to post an update. I tore down the carb again expecting to > buy a new diaphragm/slide assembly. I called my local Harley dealer. > Longhorn Harley and he said he just sold the last one and was > expecting more in about a week. Price: $46. He located one in stock at > another Harley dealer about 20 minutes away. Very helpful, I didn't > tell him I was a Kawasaki owner. Anyways, I completely dissassembled > the carb this time. The air screw was adjusted at 2 1/4 turns out, set > from the factory (I had drilled out the plug myself). The diaphragm > was in excellent shape, I looked it over with a magnifier and found no > holes, and it was seated in the grooves when I opened the top cap, I > soaked all the parts plus the bowl and carb body in carb cleaner > overnight. There was a lot of fine black junk on the bottom of the can > I soaked them in, some was probably from the outside of the carb. I > did the 22 cent mod while I had it apart, I shimmed the needle, > drilled the slide and set the air screw at 1.75 turns. The enrichener > mystery is solved, there were 2 burrs on the outside diameter of the > plunger and they were causing it to hang up on the edges of the > internal passages of the carb when it was installed. This is why I got > it to work when it wasn't installed but not when installed. I polished > out the burrs and will be ordering a new plunger soon. I checked the > spark plug while I had the tank off and it was a pretty light tan > color, looked picture perfect. After I got it together, the engine > fired right up and I immediately noticed a difference. Smoother idle > and when when I blipped the throttle I could tell it was much more > responsive to the throttle. When I took it out for a ride, it was a > different bike. 2nd gear power wheelies, and 80 MPH up hill! I > unleashed the beast! Thanks for all the help, this group is an amazing > bunch and I am always recommending y'all to others I see elsewhere > online. Especially thanks to Fred and Jeff Saline. I went for a 170 > mile ride yesterday, now I need to look into why it's burning so much > oil. It used about 3/4 a quart on the ride (all on road). I think I > need to get new rings and valve seals...maybe a Schnitz Racing 685 kit? > > --- In DSN_KLR650@yahoogroups.com > , David Nichols > wrote: > > > > My KLR is not able to go past 60 MPH. Full throttle, level ground > that all she's got. I know there's more top end than that. Low end > throttle response seems good, it idles ok and I've dumped sea foam in > it. When I start it, the enrichener seems to not be working correctly. > I can get it started with the choke off, and I crank it with partial > throttle and it fires. I need to blip the throttle a few times but it > settles into an idle soon. I think the choke cable I bought (Motion > Pro) isn't right. I cannot adjust the cable to get the right amount of > play, when I adjust it for 2 mm play at the handlebar lever, it won't > move, when I adjust it so I can get the lever to move I have about a > half inch of cable play at the lever. > > > > The bike has 13,000 miles, I recently adjusted the valves and > cleaned the carb. It sat for about 5 years before I bought it. I > replaced the anti backfire diaphragm, verified the petcock is working > fine. I tore the carb down and cleaned the idle and main jets, I > cleaned and oiled the air filter, new spark plug. Can anyone suggest > where to start troubleshooting? What carb circuit should I look at for > this type of problem? Is there anything besides the carb that would > cause this? I guess I need to revisit the carb, I was hoping the sea > foam would clear it up. > > > > -David > > > > [Non-text portions of this message have been removed] > > > > [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]